Official Paper

SSC JE Mechanical 28 October 2020 Evening Official Paper (Previous Year Paper)

200 questions · 120 minutes · with answers · free

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General Intelligence and Reasoning (50 questions)

1

A clock is rotated in a way that the digit 6 is replaced by 12 and the digit 3 is replaced by 9. In which direction respectively will the hour and the minute hand be at exactly 01:45 hours?

  1. ((a))

    North-East and East

  2. ((b))

    South-East and East

  3. ((c))

    North-East and West

  4. ((d))

    South-West and East

Show Answer
Answer: ((a))

North-East and East

2

Arrange the following cities in a logical and meaningful order.

  1. Jhansi
  2. Bhopal
  3. Leh
  4. Vellore
  5. Chandigarh
  1. ((a))

    3, 5, 1, 4, 2

  2. ((b))

    4, 2, 1, 5, 3

  3. ((c))

    4, 1, 5, 2, 3

  4. ((d))

    3, 1, 5,. 2, 4

Show Answer
Answer: ((a))

3, 5, 1, 4, 2

3

Select the option that can replace question mark (?) in the following matrix.

\(\begin{array}{*{20}{c}} {51}&{64}&{48}\ {103}&{129}&{97}\ {155}&{194}&? \end{array}\)

  1. ((a))

    244

  2. ((b))

    146

  3. ((c))

    144

  4. ((d))

    148

Show Answer
Answer: ((a))

244

4

Mehak is standing to the north of Karishma. Kartik is standing to the east of Karishma. Then, in which direction is Kartik standing with respect to Mehak?

  1. ((a))

    North-East

  2. ((b))

    North-West

  3. ((c))

    South-West

  4. ((d))

    South-East

Show Answer
Answer: ((a))

North-East

5

Select the option in which the given figure is embedded. (Rotation is NOT allowed)

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

6

Looking a picture of a girl, Ramesh said, "She is my son's mother's sister - in - law's only daughter". How is the girl is related to ramesh?

  1. ((a))

    Daughter

  2. ((b))

    Sister

  3. ((c))

    Cousin

  4. ((d))

    Niece

Show Answer
Answer: ((a))

Daughter

7

Read the given statements and conclusion carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

  1. All axes are knives.
  2. No knife is sharp.

Conclusions:

I. All knives are axes.

II. Some axes are sharp.

  1. ((a))

    Only conclusion II follows

  2. ((b))

    Neither conclusion I nor II follows

  3. ((c))

    Both conclusions I and II follow

  4. ((d))

    Only conclusion I follows

Show Answer
Answer: ((a))

Only conclusion II follows

8

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:

  1. All lions are dogs.
  2. All tigers are cats.
  3. All cats are snakes.
  4. Some horses are dogs.

Conclusions:

I. Some horses are cats.

II. Some cats are lions.

  1. ((a))

    Only conclusion I follows

  2. ((b))

    Both conclusions I and II follow

  3. ((c))

    Only conclusion II follows

  4. ((d))

    Neither conclusion I nor II follows

Show Answer
Answer: ((a))

Only conclusion I follows

9

Arrange the following medical conditions in a logical and meaningful order.

  1. Stroke
  2. Gastritis
  3. Sore throat
  4. Hip dislocation
  5. Heart attacik
  1. ((a))

    4, 5, 3, 2, 1

  2. ((b))

    1, 5, 3, 2, 4

  3. ((c))

    4, 5, 2, 3, 1

  4. ((d))

    1, 3, 5, 2, 4

Show Answer
Answer: ((a))

4, 5, 3, 2, 1

10

Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

_ q r _ r p _ p _ p q _ q r _

  1. ((a))

    q, r, q, p, r, q

  2. ((b))

    p, r, q, r, p, q

  3. ((c))

    p, q, r, q, r, p

  4. ((d))

    q, r, p, q, r, p

Show Answer
Answer: ((a))

q, r, q, p, r, q

11

Looking at a picture of a girl, Samuel said, "She is the daughter of my paternal granfather's only daughter". How is the girl related to Samuel?

  1. ((a))

    Mother

  2. ((b))

    Aunt

  3. ((c))

    Cousin

  4. ((d))

    Sister-in-law

Show Answer
Answer: ((a))

Mother

12

Select the combination of letters that when sequentially placed in the blanks of the gine letter series will complete the series.

_ _ r _ P Q _ s _ q r _

  1. ((a))

    q, s, p, q, s, r

  2. ((b))

    p, q, s, r, q, s

  3. ((c))

    p, q, s, r, p, s

  4. ((d))

    q, s, q, p, s, r

Show Answer
Answer: ((a))

q, s, p, q, s, r

13

Select the option in which the two words are related in the same way as are the two words in the given word-pair.

Alphabet : Chapter

  1. ((a))

    Wood : Soil

  2. ((b))

    Honeycomb : Beehive

  3. ((c))

    Water Cannon : Fire

  4. ((d))

    Socket : Electricity

Show Answer
Answer: ((a))

Wood : Soil

14

Arrange the following words in the order in which they appear in the English dictionary.

  1. Deficit
  2. Deliberation
  3. Defamation
  4. Defection
  5. Definition
  1. ((a))

    3, 4, 1, 5, 2

  2. ((b))

    3, 1, 4, 2, 5

  3. ((c))

    3, 4, 1, 2, 5

  4. ((d))

    4, 3, 1, 5, 2

Show Answer
Answer: ((a))

3, 4, 1, 5, 2

15

Select the correct combination of mathematical signs that can sequentially replce the '*' signs to balance the given equation.

3 * 6 * 5 * 3 * 5 = 0

  1. ((a))

    +, ×, -, ÷ 

  2. ((b))

    +, ×, ÷, -

  3. ((c))

    -, +, ×, ÷ 

  4. ((d))

    +, ÷, -, × 

Show Answer
Answer: ((a))

+, ×, -, ÷ 

16

Select the Venn diagram that best illustrates the relationship between the following classes.

Rainbow, Nature, Human

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

17

Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

PALM : SDOP :: MARE :?

  1. ((a))

    PDUH

  2. ((b))

    RCVG

  3. ((c))

    RDUH

  4. ((d))

    PDHU

Show Answer
Answer: ((a))

PDUH

18

In a certain code language 'CANDID' is written as 'EFPIKI', How will 'MATURE' be written in the same code language?

  1. ((a))

    OEVYTJ

  2. ((b))

    OEYVUI

  3. ((c))

    OFVZTJ

  4. ((d))

    OFZVTJ

Show Answer
Answer: ((a))

OEVYTJ

19

Which of the following statements is correct for Quantity A and B?

Quantity AQuantity B
(- 8) (6) (4) (-9) (-12)(6) (-4) (6) (2) (-4)
  1. ((a))

    Quantity A is twice as that of Quantity B

  2. ((b))

    Both are equal

  3. ((c))

    Quantity B is bigger

  4. ((d))

    Quantity A is bigger

Show Answer
Answer: ((a))

Quantity A is twice as that of Quantity B

20

Select the option that is related to the third term in the same way as the second term is related to the first term.

ALMOND : BMNPOE : PATTERN : ?

  1. ((a))

    QBUUFSO

  2. ((b))

    QBSSFSO

  3. ((c))

    QBUUESO

  4. ((d))

    QAUSFSO

Show Answer
Answer: ((a))

QBUUFSO

21

In a certain code language, if CAR is coded as 22 and BEGAN is coded as 29, then how will FLOWER be coded in the same language?

  1. ((a))

    76

  2. ((b))

    79

  3. ((c))

    80

  4. ((d))

    97

Show Answer
Answer: ((a))

76

22

Three different positions of the same dice are shown. Find the number on the face opposite to the face showing number '4'.

  1. ((a))

    6

  2. ((b))

    1

  3. ((c))

    2

  4. ((d))

    5

Show Answer
Answer: ((a))

6

23

Four boys A, B, C, D and 4 girls M, N, O, P are sitting around a round table facing each other.

i. No 2 boys and girls are sitting together.

ii. M is sitting to the right of B.

iii. O is facing N and is sitting to the left of A.

iv. C is sitting to the right of P.

Which two persons are sitting adjacent to D, to the left and right respectively?

  1. ((a))

    M and N

  2. ((b))

    M and O

  3. ((c))

    O and M

  4. ((d))

    N and M

Show Answer
Answer: ((a))

M and N

24

Select the option in which the given figure is embedded. (Rotation is NOT allowed)

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

25

Select the option that can replace the question mark (?) in the following series.

E, G, J, L, O, ?

  1. ((a))

    P

  2. ((b))

    J

  3. ((c))

    Q

  4. ((d))

    R

Show Answer
Answer: ((a))

P

26

Select the option that is related to the third term in the same way as the second term is related to the first term.

Chef : Cooking : Doctor : ?

  1. ((a))

    Tablet

  2. ((b))

    Surgery

  3. ((c))

    Nurse

  4. ((d))

    Hospital

Show Answer
Answer: ((a))

Tablet

27

Select the option in which the two words are related in the same way as are the two words in the given word-pair.

Lost : Found

  1. ((a))

    Upbeat : Cheerful

  2. ((b))

    Shadow : Gloomy

  3. ((c))

    Less : Miserable

  4. ((d))

    Dormant : Active

Show Answer
Answer: ((a))

Upbeat : Cheerful

28

Select the combination of letters when sequentially placed in the blanks of the given letter series will complete the series.

_ m _ o p _ m n _ p l _ n o _

  1. ((a))

    l, n, l, m, o, p

  2. ((b))

    n, l, o, n, m, p

  3. ((c))

    l, n, l, o, m, p

  4. ((d))

    n, o, l, m, n, o

Show Answer
Answer: ((a))

l, n, l, m, o, p

29

Select the Venn diagram that best illustreates the relationship between the following classes.

Indian, Football Player, Sports Person

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

30

Four number-pairs have been given,out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.

  1. ((a))

    17 : 221

  2. ((b))

    13 : 143

  3. ((c))

    12 : 156

  4. ((d))

    19 : 246

Show Answer
Answer: ((a))

17 : 221

31

A paper is folded and cut as shown in the following figure. How will it appear when unfolded?

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

32

In a certain code language, 'TOGETHER' is coded as '41834932', 'WE' is coded as '53' and 'LIVE' is coded as 0673. What will be the code for 'VERTIGO' in the same language?

  1. ((a))

    7324681

  2. ((b))

    6324731

  3. ((c))

    6234731

  4. ((d))

    7322681

Show Answer
Answer: ((a))

7324681

33

Identify the number that does NOT belong to the following series.

1, 16, 35, 60, 85, 116

  1. ((a))

    85

  2. ((b))

    116

  3. ((c))

    60

  4. ((d))

    35

Show Answer
Answer: ((a))

85

34

Bala is 40 years old. Akshay is younger than Bala. Rahul is between Akshay and Anirudh, while Bala is between Akshay and Darpan. If there is a consecutive difference of 4 years between their ages, then what is the age of Rahul?

  1. ((a))

    36 years

  2. ((b))

    32 years

  3. ((c))

    44 years

  4. ((d))

    28 years

Show Answer
Answer: ((a))

36 years

35

Arrange the following words in a meaningful sequence. 

a) Beryllium b) Hydrogen c) Sulphur d) Neon

  1. ((a))

    badc

  2. ((b))

    cabd

  3. ((c))

    bcda

  4. ((d))

    abdc

Show Answer
Answer: ((a))

badc

36

Select the option that can replace question mark (?) in the following matrix.

81024
183640
1323?
  1. ((a))

    36

  2. ((b))

    14

  3. ((c))

    32

  4. ((d))

    23

Show Answer
Answer: ((a))

36

37

Select the option that can replace the question mark (?) in the following series.

D, I, P, Y, ?

  1. ((a))

    Z

  2. ((b))

    J

  3. ((c))

    W

  4. ((d))

    I

Show Answer
Answer: ((a))

Z

38

Select the option in which the two numbers share the same relationship as that sheared by the given number-pair.

256 : 32

  1. ((a))

    13 : 169

  2. ((b))

    169 : 26

  3. ((c))

    144 : 16

  4. ((d))

    96  : 13

Show Answer
Answer: ((a))

13 : 169

39

Select the correct combination of mathematical signs that can sequentially replace the '*' signs to balance the given equation.

7 * 3 * 5 *15 * 8 = 8

  1. ((a))

    -, +, ×, ÷ 

  2. ((b))

    +, ÷, ×, -

  3. ((c))

    +, ×, -, ÷ 

  4. ((d))

    -, ÷, ×, +

Show Answer
Answer: ((a))

-, +, ×, ÷ 

40

In the following question, select the related letters from the given alternatives.

BHARAT : CJBTBV :: INDIAN:?

  1. ((a))

    JPDKCO

  2. ((b))

    KOEKBP

  3. ((c))

    JPELBP

  4. ((d))

    JPEKBP

Show Answer
Answer: ((a))

JPDKCO

41

Thomas, Jack, Harry, Sam, Yash and Jason are sitting equidistant from each other around a round table facing towards the centre. Yash is to the right of Sam. harry is between Thomas and Jack. Jason is between sam and Thomas. Who is sitting in front of Sam?

  1. ((a))

    Sam

  2. ((b))

    Yash

  3. ((c))

    Jason

  4. ((d))

    Harry

Show Answer
Answer: ((a))

Sam

42

Select the option that is related to the third term in the same way as the second term is related to the first term.

Rome : Italy :: Ankara : ?

  1. ((a))

    South korea

  2. ((b))

    Sudan

  3. ((c))

    Iraq

  4. ((d))

    Turkey

Show Answer
Answer: ((a))

South korea

43

The position of the first and eighth letters of the word ADMINISTRATION are interchanged. Similarly, the second and ninth letters are interchanged, and so on. Which will be the fourth letter from the right end?

  1. ((a))

    S

  2. ((b))

    T

  3. ((c))

    I

  4. ((d))

    N

Show Answer
Answer: ((a))

S

44

In a certain code language, 'NEVER LOOK BACK' is written as 'HNPNS AWWB KRZB', How will 'VOCABLE' be written in the same code language?

  1. ((a))

    NPWZRKA

  2. ((b))

    NWZRKAN

  3. ((c))

    PWZRKAN

  4. ((d))

    PWZKRAN

Show Answer
Answer: ((a))

NPWZRKA

45

Identify the number that does NOT belong to the following series.

15, 16, 34, 105, 424, 2142, 12756

  1. ((a))

    34

  2. ((b))

    105

  3. ((c))

    16

  4. ((d))

    2142

Show Answer
Answer: ((a))

34

46

Select the correct mirror image of the given figure when the mirror is placed to the right side of the figure.

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

47

Select the option that is related to the third letter - cluster in the same way as the second letter-cluster is related to the first letter-cluster.

ACCOMMODATE : CAEMOKQBCRC :: APPARENTLY : ?

  1. ((a))

    CNRYTPRCWN

  2. ((b))

    CNRYTCROWN

  3. ((c))

    CNRYTRPNW

  4. ((d))

    CNRYTCPRNW

Show Answer
Answer: ((a))

CNRYTPRCWN

48

Select the option that can replace the question mark (?) in the following series.

1196,114,?,14\frac{1}{196}, \frac{1}{14},?, 14

  1. ((a))

    1

  2. ((b))

    2/3

  3. ((c))

    1/7

  4. ((d))

    1/2

Show Answer
Answer: ((a))

1

49

Select the option in which the given figure is embedded. (Rotation is NOT allowed)

  1. ((a))

  2. ((b))

  3. ((c))

  4. ((d))

Show Answer
Answer: ((a))

50

Select the option that is related to the third term is the same way as the second term is related to the first term.

Cheetah : Fast :: Turtle :?

  1. ((a))

    Hard

  2. ((b))

    Fast

  3. ((c))

    Slow

  4. ((d))

    Tired

Show Answer
Answer: ((a))

Hard

General Awareness (50 questions)

51

Which of the following is INCORRECT about the modern periodic table?

  1. ((a))

    Modern periodic table has 15 columns

  2. ((b))

    From left to right a period, each element has one more proton than the element before it

  3. ((c))

    Columns of the modern table are called groups

  4. ((d))

    Rows of the modern periodic table are called periods

Show Answer
Answer: ((a))

Modern periodic table has 15 columns

52

Which of the following is NOT a Maharatna company?

  1. ((a))

    Steel Authority of Indi Limited

  2. ((b))

    Hindustan Copper Limited

  3. ((c))

    Oil & Natural Gas Corporation Limited

  4. ((d))

    Bharat Heavy Electricals Limited

Show Answer
Answer: ((a))

Steel Authority of Indi Limited

53

Tata steel Tour Championship 2019 is related to:

  1. ((a))

    Tennis

  2. ((b))

    Golf

  3. ((c))

    Hockey

  4. ((d))

    Badminton

Show Answer
Answer: ((a))

Tennis

54

The Central Industrial Security Force (CISF) is observing 2020 as the Year of:

  1. ((a))

    Mobility

  2. ((b))

    Plant Health

  3. ((c))

    Connectivity

  4. ((d))

    Prosperity

Show Answer
Answer: ((a))

Mobility

55

Who was the President of India when Emergency was imposed in India for the third time in 1975?

  1. ((a))

    Giani Zail Singh

  2. ((b))

    Basappa Dasappa Jatti

  3. ((c))

    Fakhruddin Ali Ahmed

  4. ((d))

    Zakir Husain Khan

Show Answer
Answer: ((a))

Giani Zail Singh

56

Which of the following is NOT present in chlorophyll?

  1. ((a))

    Magnesium

  2. ((b))

    Nitrogen

  3. ((c))

    Potassium

  4. ((d))

    Carbon

Show Answer
Answer: ((a))

Magnesium

57

For which state did the Asian Development Bank (ADB) and the Government of India in 2019 sign a $206 million loan to develop water supply and sewerage infrastructure?

  1. ((a))

    Maharashtra

  2. ((b))

    Karnataka

  3. ((c))

    Tamil Nadu

  4. ((d))

    Rajasthan

Show Answer
Answer: ((a))

Maharashtra

58

Which of the following is used as a bio - indicator of air pollution?

  1. ((a))

    Gern

  2. ((b))

    Cycas

  3. ((c))

    Pdeudomonas

  4. ((d))

    Lichens

Show Answer
Answer: ((a))

Gern

59

Which of the following is NOT a variety of rice?

  1. ((a))

    Birsa Dhan - 105

  2. ((b))

    Karjat - 2

  3. ((c))

    Poovan

  4. ((d))

    Ratnagiri - 3

Show Answer
Answer: ((a))

Birsa Dhan - 105

60

Which of the following states has proposed a law named Disha Bill, 2019?

  1. ((a))

    Maharashtra

  2. ((b))

    Andhra Pradesh

  3. ((c))

    Karnataka

  4. ((d))

    Gujarat

Show Answer
Answer: ((a))

Maharashtra

61

Which of the following pairs is NOT correctly matched?

  1. ((a))

    Article 114 - Appropriation Bill

  2. ((b))

    Article 79 - Supreme Court

  3. ((c))

    Article 280 - Finance Commission

  4. ((d))

    Article 312 - All India Services

Show Answer
Answer: ((a))

Article 114 - Appropriation Bill

62

Who among the following is related to the Chittagong Armoury Raid?

  1. ((a))

    Ashfaqulla Khan

  2. ((b))

    VD Savarkar

  3. ((c))

    Aurobindo Ghosh

  4. ((d))

    Kalpana Datta

Show Answer
Answer: ((a))

Ashfaqulla Khan

63

Which Indian products are issued with eco - mark?

  1. ((a))

    Products which are cost effective

  2. ((b))

    Products which are not biodegrdable

  3. ((c))

    Products which are environment - friendly

  4. ((d))

    Products which are free of adulteration

Show Answer
Answer: ((a))

Products which are cost effective

64

Which of the following bodies is NOT mentioned in the constitution?

  1. ((a))

    National Human Rights Commission

  2. ((b))

    National Commission for Scheduled Tribes

  3. ((c))

    Finance Commission

  4. ((d))

    Union Public Service Commission

Show Answer
Answer: ((a))

National Human Rights Commission

65

The incident on 4 February, 1922, at Chauri Chaura was the main cause for the withdrawal of:

  1. ((a))

    Non - Cooperation Movement

  2. ((b))

    Rowlatt Satyagraha

  3. ((c))

    Cvil Disobedience Movement

  4. ((d))

    Quit India Movement

Show Answer
Answer: ((a))

Non - Cooperation Movement

66

Choose the INCORRECT match with respect to newspaper and its corresponding editor:

  1. ((a))

    Comrade - Bal Gangadhar Tilak

  2. ((b))

    Bande Mataram - Aurobindo  Ghosh

  3. ((c))

    Sandhya - Brahmabandhav Upadhyay

  4. ((d))

    New India - Bipin Chandra Pal

Show Answer
Answer: ((a))

Comrade - Bal Gangadhar Tilak

67

Who has the shortest tenure as a Chief Minister?

  1. ((a))

    Om Prakash Chautala

  2. ((b))

    Devendra Fadnavis

  3. ((c))

    BD Yeddyurappa

  4. ((d))

    Harish Rawat

Show Answer
Answer: ((a))

Om Prakash Chautala

68

Which of the following parasites is the cause of the guinea worm disease?

  1. ((a))

    Dracunculus medinensis

  2. ((b))

    Lymphatic filariasis

  3. ((c))

    Strongloides stercoralis

  4. ((d))

    Gnathostomaiasis

Show Answer
Answer: ((a))

Dracunculus medinensis

69

Choose the INCORRECT pair with respect to wetland and their location?

  1. ((a))

    Ropar Lake - Punjab

  2. ((b))

    Sambhar Lake - Rajasthan

  3. ((c))

    Deepor Beel - Assam

  4. ((d))

    Harike Lake - Kerala

Show Answer
Answer: ((a))

Ropar Lake - Punjab

70

Where was the 11th BRICS conference held on 13th - 14th November, 2019?

  1. ((a))

    Paris

  2. ((b))

    Delhi

  3. ((c))

    Moscow

  4. ((d))

    Brasilia

Show Answer
Answer: ((a))

Paris

71

Which animal has the scientific name Pterois volitans?

  1. ((a))

    Cuttlefish

  2. ((b))

    Red Lionfish

  3. ((c))

    Starfish

  4. ((d))

    Devilfish

Show Answer
Answer: ((a))

Cuttlefish

72

Which of the following is the SI unit of pressure?

  1. ((a))

    Parsec

  2. ((b))

    Lumen

  3. ((c))

    Candela

  4. ((d))

    Pascal

Show Answer
Answer: ((a))

Parsec

73

Choose the INCORRECT statement with respect to soils of India.

  1. ((a))

    The red soil colour is caused by aluminium compounds

  2. ((b))

    Regur soil is most suitable for the cultivation of cotton

  3. ((c))

    Black soil is also called Regur soil

  4. ((d))

    Laterite soil is prone to intensive leaching due to rain

Show Answer
Answer: ((a))

The red soil colour is caused by aluminium compounds

74

Who discovered the first antibiotic 'Penicillin'?

  1. ((a))

    James Watson

  2. ((b))

    Alexander Fleming

  3. ((c))

    Francis Crick

  4. ((d))

    Henry Moseley

Show Answer
Answer: ((a))

James Watson

75

Which of the following is NOT a hormone secreted by islets of Langerhans?

  1. ((a))

    Somatostatin

  2. ((b))

    Glucocorticoids

  3. ((c))

    Glucagon

  4. ((d))

    Insulin

Show Answer
Answer: ((a))

Somatostatin

76

Cuttlefish belongs to phylum ________.

  1. ((a))

    Echinodermata

  2. ((b))

    Mollusca

  3. ((c))

    Annelida

  4. ((d))

    Pisces

Show Answer
Answer: ((a))

Echinodermata

77

Who won the 26th Annual Crystal for spreading awareness about the importance of mental health?

  1. ((a))

    Dia Mirza

  2. ((b))

    Priyanka Chopra

  3. ((c))

    Akshay Kumar

  4. ((d))

    Deepika Padukone

Show Answer
Answer: ((a))

Dia Mirza

78

On the basis of the recommendation of which commission/committee was the state of Haryana formed?

  1. ((a))

    Dhar Committee

  2. ((b))

    Fazal Ali Committee

  3. ((c))

    JVP Committee

  4. ((d))

    Sardar Hukam Singh Parliamentary Committee

Show Answer
Answer: ((a))

Dhar Committee

79

Water gas is a mixture of:

  1. ((a))

    carbon monoxide and hydrogen

  2. ((b))

    carbon dioxide and methane

  3. ((c))

    carbon dioxide and hydrogen

  4. ((d))

    carbon monoxide and nitrogen

Show Answer
Answer: ((a))

carbon monoxide and hydrogen

80

Saline soils are also known as:

  1. ((a))

    Bhangar soils

  2. ((b))

    Usara soils

  3. ((c))

    Cotton soils

  4. ((d))

    Regur soils

Show Answer
Answer: ((a))

Bhangar soils

81

Which Inert gas is used in cancer treatment?

  1. ((a))

    Krypton

  2. ((b))

    Radon

  3. ((c))

    Helium

  4. ((d))

    Argon

Show Answer
Answer: ((a))

Krypton

82

Who launched Surakshit Matritva Aashwasan scheme on 10 October 2019?

  1. ((a))

    Narendra Modi

  2. ((b))

    Amit Shah

  3. ((c))

    Smriti Irani

  4. ((d))

    Dr. Harsh Vardhan

Show Answer
Answer: ((a))

Narendra Modi

83

What does 'P' stand for in HTTPS, an expression commonly found in web addresses?

  1. ((a))

    Processor

  2. ((b))

    Plotter

  3. ((c))

    Protocol

  4. ((d))

    Point

Show Answer
Answer: ((a))

Processor

84

Which of the following nitrogen base is NOT related to DNA?

  1. ((a))

    Thymine

  2. ((b))

    Uracil

  3. ((c))

    Adenine

  4. ((d))

    Guanine

Show Answer
Answer: ((a))

Thymine

85

The first human heart transplant was done by:

  1. ((a))

    Christiaan Barnard

  2. ((b))

    Frederick Gowland Hopkins

  3. ((c))

    William Harvey

  4. ((d))

    Leeuwenhoek

Show Answer
Answer: ((a))

Christiaan Barnard

86

Which of the following is NOT correct about Toluene?

  1. ((a))

    It is used for the production of Saccharin

  2. ((b))

    It is used for the production of trinitroluene (TNT)

  3. ((c))

    It is also known as Toluol.

  4. ((d))

    It was first obtained from Aniline.

Show Answer
Answer: ((a))

It is used for the production of Saccharin

87

What is the base of the hexadecimal number system?

  1. ((a))

    10

  2. ((b))

    8

  3. ((c))

    16

  4. ((d))

    2

Show Answer
Answer: ((a))

10

88

The union territory of Puducherry shares boundaries with:

  1. ((a))

    Karnataka and Andhra Pradesh

  2. ((b))

    Andhra Pradesh,Kerala and Tamil Nadu

  3. ((c))

    Tamil Nadu

  4. ((d))

    Karnataka, Kerala and Tamil Nadu

Show Answer
Answer: ((a))

Karnataka and Andhra Pradesh

89

Choose the correct statement:

  1. ((a))

    Desert National Park is located in Rajasthan

  2. ((b))

    Gir National Park is located in Maharashtra

  3. ((c))

    Manad National Park is located in Madhya Pradesh

  4. ((d))

    Khangchendzonga National Park is located in Arunachal Pradesh

Show Answer
Answer: ((a))

Desert National Park is located in Rajasthan

90

Heat generated in a resistive wire is:

  1. ((a))

    proportional to the square of the time of current flow

  2. ((b))

    proportional to the square of the current flowing in the wire

  3. ((c))

    proportional to the square of the resistance of the wire

  4. ((d))

    proportional to the cube of the resistance of the wire

Show Answer
Answer: ((a))

proportional to the square of the time of current flow

91

Salem Steel Plant is located in:

  1. ((a))

    Tamil Nadu

  2. ((b))

    Odisha

  3. ((c))

    Maharashtra

  4. ((d))

    Jharkhand

Show Answer
Answer: ((a))

Tamil Nadu

92

Muhammad Bin Tughlaq changed his capital from Delhi to:

  1. ((a))

    Lahore

  2. ((b))

    Munger

  3. ((c))

    Agra

  4. ((d))

    Daulatabad

Show Answer
Answer: ((a))

Lahore

93

Choose the correct option with respect to the Round Table conference held in the 1930s.

  1. ((a))

    MK Gandhi took part in the third Round Table conference

  2. ((b))

    Lord Reading was the Viceroy when the first Round Table Conference was held

  3. ((c))

    The Congress participated in all three conferences

  4. ((d))

    Dr. BR Ambedkar participated in all three conferences

Show Answer
Answer: ((a))

MK Gandhi took part in the third Round Table conference

94

Where was the Military Literature Festival 2019 held?

  1. ((a))

    Gurugram

  2. ((b))

    Chandigarh

  3. ((c))

    Delhi

  4. ((d))

    Faridabad

Show Answer
Answer: ((a))

Gurugram

95

Under the Pradhan Mantri Shram Yogi Mandhan scheme, the minimum monthly pension for each subscriber is:

  1. ((a))

    Rs. 2,000

  2. ((b))

    Rs. 4,000

  3. ((c))

    Rs. 3,000

  4. ((d))

    Rs. 5,000

Show Answer
Answer: ((a))

Rs. 2,000

96

Which start up has become the first Indian start up to win the 'Space Oscars' award presented by the European Space Agency?

  1. ((a))

    Hashable

  2. ((b))

    iRobot

  3. ((c))

    Cloudsnap

  4. ((d))

    Blue Sky Analytics

Show Answer
Answer: ((a))

Hashable

97

What causes Minamata disease?

  1. ((a))

    Deficiency of vitamin D

  2. ((b))

    Mercury poisoning

  3. ((c))

    Viral infection

  4. ((d))

    Deformed gene

Show Answer
Answer: ((a))

Deficiency of vitamin D

98

Which of the following is NOT correctly matched about bone conditions?

  1. ((a))

    Fracture - Broken bones of various types

  2. ((b))

    Multiple myeloma - Cancer of the plasma cells in bone marrow

  3. ((c))

    Rickets - A child's growing bones fail to develop due to a lack of vitamin D

  4. ((d))

    Osteoporosis - Infection of the bone

Show Answer
Answer: ((a))

Fracture - Broken bones of various types

99

Where was the junior National Equestrian Championship 2019 held?

  1. ((a))

    Delhi

  2. ((b))

    Pune

  3. ((c))

    Chandigarh

  4. ((d))

    Bengaluru

Show Answer
Answer: ((a))

Delhi

100

Who launched his autobiography named as 'Mind Master'?

  1. ((a))

    Chetan Bhagat

  2. ((b))

    Yuvraj Singh

  3. ((c))

    Rahul Dravid

  4. ((d))

    Viswanathan Anand

Show Answer
Answer: ((a))

Chetan Bhagat

Mechanical Engineering (100 questions)

101

Single-stage piston compressors are used to compress air up to pressure of approximately ____ bar.

  1. ((a))

    5

  2. ((b))

    100

  3. ((c))

    150

  4. ((d))

    50

Show Answer
Answer: ((a))

5

102

Which of the following is antifriction bearing?

  1. ((a))

    Needle bearing

  2. ((b))

    Pedestal bearing

  3. ((c))

    Collar bearing

  4. ((d))

    Hydrostatic bearing

Show Answer
Answer: ((a))

Needle bearing

103

What is the use of a Hermetic sealed compressor?

  1. ((a))

    It is used in domestic refrigerators to prevent leakages of refrigerant.

  2. ((b))

    It is used in aircraft engines to supply air to the cabin

  3. ((c))

    It is used to supply air at constant low volume in high pressure applications such as in industrial operation.

  4. ((d))

    It is used to supply air at low pressure in high volume applications such as air curtains

Show Answer
Answer: ((a))

It is used in domestic refrigerators to prevent leakages of refrigerant.

104

If the back pressure is low enough and the throat is sonic, the Mach number is more than 1 in a/an _____ section during flow in a convergent-divergent nozzle.

  1. ((a))

    entry

  2. ((b))

    converging

  3. ((c))

    throat

  4. ((d))

    diverging

Show Answer
Answer: ((a))

entry

105

Intake filters are provided in compressors primarily to _____ from the suction air.

  1. ((a))

    remove dirt and moisture

  2. ((b))

    remove dirt and regulate the temperature

  3. ((c))

    remove dirt as well as reduce the pressure

  4. ((d))

    remove only dirt

Show Answer
Answer: ((a))

remove dirt and moisture

106

While running through a bend a bicycle remains stable due to _____

  1. ((a))

     gyroscopic action

  2. ((b))

    curvature action

  3. ((c))

    centrifugal action

  4. ((d))

    reaction action

Show Answer
Answer: ((a))

 gyroscopic action

107

The coefficient of discharge for venturimeter (Cd) ranges from _______

  1. ((a))

    0.50 – 0.55

  2. ((b))

    0.61 – 0.65

  3. ((c))

    0.61 – 0.69

  4. ((d))

    0.95 – 0.99

Show Answer
Answer: ((a))

0.50 – 0.55

108

The _____ part of the vapor compression cycle produces a refrigeration effect.

  1. ((a))

    evaporator

  2. ((b))

    condenser

  3. ((c))

    compressor

  4. ((d))

    throttle valve

Show Answer
Answer: ((a))

evaporator

109

For a pure substance at its triple point, the number of degrees of freedom is

  1. ((a))

    0

  2. ((b))

    1

  3. ((c))

    2

  4. ((d))

    None of these

Show Answer
Answer: ((a))

0

110

The triple point of water is at _________ mm of Hg

  1. ((a))

    2.58

  2. ((b))

    3.28

  3. ((c))

    3.35

  4. ((d))

    4.58

Show Answer
Answer: ((a))

2.58

111

The process of cooling the refrigerant in vapour compression refrigeration system, known as sub-cooling, is done before:

  1. ((a))

    evaporation

  2. ((b))

    compression

  3. ((c))

    throttling

  4. ((d))

    condensation

Show Answer
Answer: ((a))

evaporation

112

______ CANNOT be counted as boiler mounting.

  1. ((a))

    Blow-off cock

  2. ((b))

    Feed water pump

  3. ((c))

    Fusible plug

  4. ((d))

    Stop valve

Show Answer
Answer: ((a))

Blow-off cock

113

Viscosity of an ideal fluid is always ___________.

  1. ((a))

    Infinity

  2. ((b))

    Zero

  3. ((c))

    Positive

  4. ((d))

    Negative

Show Answer
Answer: ((a))

Infinity

114

In a Li-Br water absorption cycle _____ is used as a refrigerant.

  1. ((a))

    water

  2. ((b))

    air

  3. ((c))

    ammonia

  4. ((d))

    lithium-bromide

Show Answer
Answer: ((a))

water

115

U type of configuration is possible in _____ for pressure measurement.

  1. ((a))

    Manometer

  2. ((b))

    Pirani gauge

  3. ((c))

    Orifice meter

  4. ((d))

    Bourdon tube

Show Answer
Answer: ((a))

Manometer

116

_____ boiler involves the circulation of water by natural convection.

  1. ((a))

    Babcock-Wilcox

  2. ((b))

    Benson

  3. ((c))

    Velox

  4. ((d))

    LaMont

Show Answer
Answer: ((a))

Babcock-Wilcox

117

______ is the presentation of the anti-knock value of diesel fuel.

  1. ((a))

    Cetane number

  2. ((b))

    Diesel constant

  3. ((c))

    Octane number

  4. ((d))

    Fuel number

Show Answer
Answer: ((a))

Cetane number

118

Specific energy is _____ at critical depth for a given discharge in a channel.

  1. ((a))

    zero

  2. ((b))

    minimum

  3. ((c))

    maximum

  4. ((d))

    unpredictable

Show Answer
Answer: ((a))

zero

119

In a steam nozzle, heat supplied to steam during the expansion process equals

  1. ((a))

    zero

  2. ((b))

    change in kinetic energy

  3. ((c))

    work done

  4. ((d))

    heat drop

Show Answer
Answer: ((a))

zero

120

Density of an ideal fluid is always _____

  1. ((a))

    constant

  2. ((b))

    zero

  3. ((c))

    decreasing

  4. ((d))

    increasing

Show Answer
Answer: ((a))

constant

121

In a vapour absorption refrigeration, heat is rejected in

  1. ((a))

    Generator only

  2. ((b))

    Condenser only

  3. ((c))

    Condenser and absorber

  4. ((d))

    Absorber only

Show Answer
Answer: ((a))

Generator only

122

__________ technique uses wear particles analysis using lubricating oil for predicting the impeding failures of machine components.

  1. ((a))

    Waveform analysis

  2. ((b))

    Ferrography

  3. ((c))

    Envelope analysis

  4. ((d))

    Spectrography

Show Answer
Answer: ((a))

Waveform analysis

123

In Rankine cycle expansion of steam assumed to be

  1. ((a))

    Adiabatic

  2. ((b))

    Polytropic

  3. ((c))

    Isentropic

  4. ((d))

    Isothermal

Show Answer
Answer: ((a))

Adiabatic

124

The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called

  1. ((a))

    pressure ratio

  2. ((b))

    pressure coefficient

  3. ((c))

    degree of reaction

  4. ((d))

    slip factor

Show Answer
Answer: ((a))

pressure ratio

125

A two-stroke cycle engine ____ as compared to a four-stroke cycle engine of the same size.

  1. ((a))

    has greater thermal efficiency

  2. ((b))

    has greater volumetric efficiency

  3. ((c))

    produces more power

  4. ((d))

    has less wear and tear of moving parts

Show Answer
Answer: ((a))

has greater thermal efficiency

126

In _____ process, the cross-section of the bar is increased at the cost of reducing its length.

  1. ((a))

    Drawing down

  2. ((b))

    Spinning

  3. ((c))

    Upsetting

  4. ((d))

    Reaming

Show Answer
Answer: ((a))

Drawing down

127

In a Centrifugal Pump, the liquid enters the pump

  1. ((a))

    At the centre

  2. ((b))

    From the sides

  3. ((c))

    At the top

  4. ((d))

    At the bottom

Show Answer
Answer: ((a))

At the centre

128

When fluid is flowing through a duct, the local velocity at a point can be measured by a ____.

  1. ((a))

    pitot-static tube

  2. ((b))

    vane anemometer

  3. ((c))

    flow nozzle

  4. ((d))

    current meter

Show Answer
Answer: ((a))

pitot-static tube

129

Which of the following statements about a principal plane is true?

  1. ((a))

    It has no normal stress.

  2. ((b))

    It has maximum shear stress.

  3. ((c))

    No shear stress is present.

  4. ((d))

    Shear stress can have any value

Show Answer
Answer: ((a))

It has no normal stress.

130

Which of the following factors does NOT affect the buckling load?

  1. ((a))

    Modulus of Elasticity

  2. ((b))

    Slenderness ratio

  3. ((c))

    Area of cross-section

  4. ((d))

    Area moment of inertia

Show Answer
Answer: ((a))

Modulus of Elasticity

131

A centrifugal pump is started with its delivery valve kept

  1. ((a))

    Fully open

  2. ((b))

    Fully closed

  3. ((c))

    Partially open

  4. ((d))

    50% open

Show Answer
Answer: ((a))

Fully open

132

The refrigerant reaches its highest temperature when the vapour leaves the _________ in a refrigeration system based on vapour compression.

  1. ((a))

    condenser

  2. ((b))

    compressor

  3. ((c))

    evaporator

  4. ((d))

    throttle valve

Show Answer
Answer: ((a))

condenser

133

Due to the turbidity of the water in the boiler feedwater, _____ is caused.

  1. ((a))

    sludge

  2. ((b))

    embrittlement

  3. ((c))

    corrosion

  4. ((d))

    cracking

Show Answer
Answer: ((a))

sludge

134

In hydraulic coupling, slip is around _________ for mentors having low to moderate locked rotor torque.

  1. ((a))

    12 - 15%

  2. ((b))

    2 - 3%

  3. ((c))

    8 - 10%

  4. ((d))

    6 - 7%

Show Answer
Answer: ((a))

12 - 15%

135

An orifice meter, having an orifice of diameter ‘d’ is fitted in a pipe of diameter D. For this orifice meter, what is the coefficient of discharge Cd?

  1. ((a))

    A function of Reynolds number only

  2. ((b))

    A function of d/D only

  3. ((c))

    A function of d/D and Reynolds number

  4. ((d))

    Independent of d/D and Reynolds number

Show Answer
Answer: ((a))

A function of Reynolds number only

136

Flooding of a river is an example of __________ flow.

  1. ((a))

    steady and uniform

  2. ((b))

    unsteady and uniform

  3. ((c))

    steady and non-uniform

  4. ((d))

    unsteady and non-uniform

Show Answer
Answer: ((a))

steady and uniform

137

Which of the following cycles incorporates two isothermal processes?

  1. ((a))

    Dual cycle

  2. ((b))

    Carnot cycle

  3. ((c))

    Otto cycle

  4. ((d))

    Diesel cycle

Show Answer
Answer: ((a))

Dual cycle

138

Multi-stage centrifugal pumps are used to:

  1. ((a))

    give high discharge

  2. ((b))

    produce high heads

  3. ((c))

    pump viscous fluids

  4. ((d))

    all of these

Show Answer
Answer: ((a))

give high discharge

139

_________ involves the breaking of fuel into fine particles.

  1. ((a))

    Fine atomization of fuel

  2. ((b))

    Air supply at increased pressure

  3. ((c))

    Mixing of fuel and air

  4. ((d))

    Excess supply of air

Show Answer
Answer: ((a))

Fine atomization of fuel

140

The phase where any substance loses the distinction between liquid and vapor is called _____.

  1. ((a))

    Crystal point

  2. ((b))

    Ignition point

  3. ((c))

    Critical point

  4. ((d))

    Dew point

Show Answer
Answer: ((a))

Crystal point

141

Over a flat plate, thickness of turbulent boundary layer at a distance x from leading edge is _____.

  1. ((a))

    x4/5

  2. ((b))

    x2/5

  3. ((c))

    x5/4

  4. ((d))

    x3/4

Show Answer
Answer: ((a))

x4/5

142

_________ boiler is capable of generating a small quantity of steam per unit time at high pressure.

  1. ((a))

    Babcock-Wilcox

  2. ((b))

    Scottish marine

  3. ((c))

    Locomotive

  4. ((d))

    Lancashire

Show Answer
Answer: ((a))

Babcock-Wilcox

143

Oil spreads on the surface of water because _____

  1. ((a))

    oil is lighter than water

  2. ((b))

    oil is heavier than water

  3. ((c))

    oil has low vapour pressure

  4. ((d))

    of surface tension effect

Show Answer
Answer: ((a))

oil is lighter than water

144

If suction, compression, and delivery of the air take place on one side of the piston only then the compressor is known as:

  1. ((a))

    multistage

  2. ((b))

    single acting

  3. ((c))

    single stage

  4. ((d))

    double acting

Show Answer
Answer: ((a))

multistage

145

During throttling, which thermodynamic property does not change?

  1. ((a))

    Entropy

  2. ((b))

    Enthalpy

  3. ((c))

    Internal energy

  4. ((d))

    Pressure

Show Answer
Answer: ((a))

Entropy

146

The anti-knock value of a gasoline engine is defined in terms of a/an _____

  1. ((a))

    Octane number

  2. ((b))

    Knock number

  3. ((c))

    Crook number

  4. ((d))

    Cetane number

Show Answer
Answer: ((a))

Octane number

147

______ process is NOT involved in Rankine cycle.

  1. ((a))

    Isentropic compression

  2. ((b))

    Constant volume heat addition

  3. ((c))

    Constant pressure heat addition

  4. ((d))

    Isentropic expansion

Show Answer
Answer: ((a))

Isentropic compression

148

Isolated system indicates

  1. ((a))

    Mass of substance cross the boundary

  2. ((b))

    Energy of substance cross the boundary

  3. ((c))

    Both mass and energy of substance cross the boundary

  4. ((d))

    Both mass and energy of substance does not cross the boundary

Show Answer
Answer: ((a))

Mass of substance cross the boundary

149

_____ use(s) air refrigeration cycle.

  1. ((a))

    Cryogenic chambers

  2. ((b))

    Aircraft air-conditioning system

  3. ((c))

    Gas chambers

  4. ((d))

    Commercial refrigeration

Show Answer
Answer: ((a))

Cryogenic chambers

150

Identify the positive displacement type of flow meter from the following.

  1. ((a))

    Constant area variable head

  2. ((b))

    Oval gear type

  3. ((c))

    Constant head variable area

  4. ((d))

    Variable area variable head

Show Answer
Answer: ((a))

Constant area variable head

151

_____ boiler has unique characteristic of NOT having a steam separating drum.

  1. ((a))

    Benson

  2. ((b))

    LaMont

  3. ((c))

    Velox

  4. ((d))

    Loeffler

Show Answer
Answer: ((a))

Benson

152

Which of the following is NOT a type of safety valve used for boilers?

  1. ((a))

    Sliding type

  2. ((b))

    Spring type

  3. ((c))

    Lever type

  4. ((d))

    Dead-weight type

Show Answer
Answer: ((a))

Sliding type

153

The stretching tendency of liquid surfaces is known as _____.

  1. ((a))

    Cohesion

  2. ((b))

    Adhesion

  3. ((c))

    Surface tension

  4. ((d))

    Cavitation

Show Answer
Answer: ((a))

Cohesion

154

Mitre gears are generally used for _____

  1. ((a))

    minimum axial thrust

  2. ((b))

    change in direction without effecting speed

  3. ((c))

    minimum backlash

  4. ((d))

    speed reduction

Show Answer
Answer: ((a))

minimum axial thrust

155

Inside a boiler surface, scales are formed due to the presence of ____ in the boiler feedwater.

  1. ((a))

    insoluble compounds

  2. ((b))

    Ca and Mg salts

  3. ((c))

    oils

  4. ((d))

    dissolved gases

Show Answer
Answer: ((a))

insoluble compounds

156

The pressure-volume diagram of an ideal reciprocating air compressor consists of ____ isobaric, _____ adiabatic and _____ constant volume processes.

  1. ((a))

    two, one, one

  2. ((b))

    one, two, two

  3. ((c))

    one, two, one

  4. ((d))

    two, two, zero

Show Answer
Answer: ((a))

two, one, one

157

In a laminar flow, _____ can be applied.

  1. ((a))

    Snell’s law

  2. ((b))

    Fresnel law

  3. ((c))

    Newton’s law of viscosity

  4. ((d))

    Grashoff’s law

Show Answer
Answer: ((a))

Snell’s law

158

Which of the following forces does NOT act on fluid which is at rest?

  1. ((a))

    Viscous

  2. ((b))

    Hydrostatic

  3. ((c))

    Gravity

  4. ((d))

    Surface tension

Show Answer
Answer: ((a))

Viscous

159

A fan is provided in the water cooling system to

  1. ((a))

    Draw the air through the radiator.

  2. ((b))

    Provide drive to the water pump.

  3. ((c))

    Cool the engine by blowing air over it.

  4. ((d))

    Increase flow of coolant.

Show Answer
Answer: ((a))

Draw the air through the radiator.

160

Which of the following devices is NOT used to measure the flow rate of velocity of fluid?

  1. ((a))

    Current and turbine meter

  2. ((b))

    Piezometer

  3. ((c))

    Wire anemometer

  4. ((d))

    Pitot tube

Show Answer
Answer: ((a))

Current and turbine meter

161

The percentage of carbon in bituminous coal is of the order of

  1. ((a))

    20 – 40%

  2. ((b))

    30 – 50%

  3. ((c))

    50 – 60%

  4. ((d))

    60 – 85%

Show Answer
Answer: ((a))

20 – 40%

162

A cycle consisting of two constant volumes and two isothermal processes is known as

  1. ((a))

    Carnot cycle

  2. ((b))

    Diesel cycle

  3. ((c))

    Joule cycle

  4. ((d))

    Stirling cycle

Show Answer
Answer: ((a))

Carnot cycle

163

An increase in the efficiency of the Rankine cycle can be expected with _____

  1. ((a))

    increase in exhaust pressure

  2. ((b))

    increase in temperature of heat rejection

  3. ((c))

    decrease in exhaust pressure

  4. ((d))

    decrease in temperature of heat addition

Show Answer
Answer: ((a))

increase in exhaust pressure

164

Which of the following processes reduces the residual stresses within a steel structure?

  1. ((a))

    Hot forming

  2. ((b))

    Cold forming

  3. ((c))

    Heat treatment

  4. ((d))

    Welding

Show Answer
Answer: ((a))

Hot forming

165

In vapour compression cycle, the refrigerant exists in a superheated vapour state _____.

  1. ((a))

    at the exit of the compressor

  2. ((b))

    after leaving the expansion valve

  3. ((c))

    after leaving the evaporator

  4. ((d))

    after passing through the condenser

Show Answer
Answer: ((a))

at the exit of the compressor

166

An after-cooler provided in reciprocating compressors performs the function of _____.

  1. ((a))

    reducing temperature of compressed air

  2. ((b))

    removal of moisture from compressed air

  3. ((c))

    removal of impurities from compressed air

  4. ((d))

    reducing the volume of compressed air

Show Answer
Answer: ((a))

reducing temperature of compressed air

167

When a fluid is at rest, the shear stress is-

  1. ((a))

    Very large 

  2. ((b))

    Zero

  3. ((c))

    Undefined 

  4. ((d))

    Finite

Show Answer
Answer: ((a))

Very large 

168

The octane rating is a measure of the ability of the _____ to resist detonation during combustion.

  1. ((a))

    piston

  2. ((b))

    air mixture

  3. ((c))

    fuel

  4. ((d))

    cylinder

Show Answer
Answer: ((a))

piston

169

Which of the following instruments is used for measuring ultra-high vacuum?

  1. ((a))

    McLeod gauge

  2. ((b))

    Bourdon tube

  3. ((c))

    Manometer

  4. ((d))

    Cathode ray oscilloscope

Show Answer
Answer: ((a))

McLeod gauge

170

Milk, blood, and clay are examples of _____ fluid.

  1. ((a))

    Ideal

  2. ((b))

    Pseudo-plastic

  3. ((c))

    Perfect

  4. ((d))

    Newtonian

Show Answer
Answer: ((a))

Ideal

171

Which of the following is applied to brittle materials?

  1. ((a))

    Maximum principal stress theory

  2. ((b))

    Maximum principal strain theory

  3. ((c))

    Maximum strain energy theory

  4. ((d))

    Maximum shear stress theory

Show Answer
Answer: ((a))

Maximum principal stress theory

172

_____ is closely related to working of hydraulic turbines.

  1. ((a))

    Bragg’s law

  2. ((b))

    Newton’s second law

  3. ((c))

    Faraday’s law

  4. ((d))

    Charles’ law

Show Answer
Answer: ((a))

Bragg’s law

173

The upward force on a body immersed in water, because of the fluid surrounding it, is known as _____

  1. ((a))

    Buoyancy force

  2. ((b))

    Gravitation force

  3. ((c))

    Force of Viscosity

  4. ((d))

    Archimedes’ Force

Show Answer
Answer: ((a))

Buoyancy force

174

The volumetric flow rate of river waters is measured directly using _____.

  1. ((a))

    vane meter

  2. ((b))

    weirs

  3. ((c))

    ultrasonic flow meters

  4. ((d))

    ultraviolet flow meters

Show Answer
Answer: ((a))

vane meter

175

________ measures heat loss from a heated wire to measure pressure.

  1. ((a))

    Orifice meter

  2. ((b))

    Manometer

  3. ((c))

    Pirani gauge

  4. ((d))

    Barometer

Show Answer
Answer: ((a))

Orifice meter

176

The vapour compression refrigerator employs which of the following cycles?

  1. ((a))

    Rankine

  2. ((b))

    Carnot

  3. ((c))

    Reversed Rankine

  4. ((d))

    ​Reversed ​Carnot

Show Answer
Answer: ((a))

Rankine

177

Which of the following processes generally does NOT occur during the heat treatment of steels?

  1. ((a))

    Rework

  2. ((b))

    Recovery

  3. ((c))

    Recrystallisation

  4. ((d))

    Grain growth

Show Answer
Answer: ((a))

Rework

178

The shear stress at the centre of a circular shaft under torsion is

  1. ((a))

    Maximum

  2. ((b))

    Minimum

  3. ((c))

    Zero

  4. ((d))

    Unpredictable

Show Answer
Answer: ((a))

Maximum

179

Which of the following cycles is most suitable for steam power plants?

  1. ((a))

    Brayton cycle 

  2. ((b))

    Diesel cycle

  3. ((c))

    Otto cycle 

  4. ((d))

    Rankine cycle 

Show Answer
Answer: ((a))

Brayton cycle 

180

Refrigerant exits as a high-pressure liquid from the _____ in a vapour compression system.

  1. ((a))

    throttle valve

  2. ((b))

    condensor

  3. ((c))

    evaporator

  4. ((d))

    compressor

Show Answer
Answer: ((a))

throttle valve

181

Bending moment at the supports in case of simply supported beam is:

  1. ((a))

    Positive

  2. ((b))

    Zero

  3. ((c))

    Negative

  4. ((d))

    Depends upon loading

Show Answer
Answer: ((a))

Positive

182

For a given system, if heat is denoted by ‘Q’ and work is denoted by ‘w’. the cyclic integral of (dQ – dw) for a closed system will be:

  1. ((a))

    positive

  2. ((b))

    negative

  3. ((c))

    zero

  4. ((d))

    unpredictable

Show Answer
Answer: ((a))

positive

183

Which of the following metals contains chromium as its major alloying element?

  1. ((a))

    Copper

  2. ((b))

    Titanium

  3. ((c))

    Carbon steels

  4. ((d))

    Stainless steel

Show Answer
Answer: ((a))

Copper

184

While classifying the boilers into fire-tube and water-tube, mark out the odd one out of the option given below.

  1. ((a))

    Cochran boiler

  2. ((b))

    Locomotive boiler

  3. ((c))

    Stirling boiler

  4. ((d))

    Lancashire boiler

Show Answer
Answer: ((a))

Cochran boiler

185

A car has a four-stroke in-line diesel engine whose compression ratio is 21 : 1 and expansion ratio is 10 : 1.  What is the cut-off ratio?

  1. ((a))

    3.2

  2. ((b))

    2.1

  3. ((c))

    210

  4. ((d))

    2.8

Show Answer
Answer: ((a))

3.2

186

Which type of pump is commonly used nowadays to force water into the boiler?

  1. ((a))

    Centrifugal pump

  2. ((b))

    Duplex pump

  3. ((c))

    Rotary pump

  4. ((d))

    Single-stage reciprocating pump

Show Answer
Answer: ((a))

Centrifugal pump

187

Cylinder and piston-type flow meters are of _____ type.

  1. ((a))

    variable head

  2. ((b))

    variable area

  3. ((c))

    variable area variable head

  4. ((d))

    positive displacement

Show Answer
Answer: ((a))

variable head

188

__________ Irreversibility is due to the friction in the system.

  1. ((a))

    Chemical

  2. ((b))

    Rotary

  3. ((c))

    Internal

  4. ((d))

    Frictional

Show Answer
Answer: ((a))

Chemical

189

Hardness is induced within the gear teeth to avoid _____.

  1. ((a))

    meshing

  2. ((b))

    wear

  3. ((c))

    pitting

  4. ((d))

    abrasion

Show Answer
Answer: ((a))

meshing

190

The increase in entropy of a system represents ______ of energy.

  1. ((a))

    degradation

  2. ((b))

    upgradation

  3. ((c))

    generation

  4. ((d))

    preservation

Show Answer
Answer: ((a))

degradation

191

The steam expansion process in a nozzle can be approximated as a/an _____ process.

  1. ((a))

    polytropic

  2. ((b))

    throttling

  3. ((c))

    adiabatic

  4. ((d))

    free expansion

Show Answer
Answer: ((a))

polytropic

192

For an unsteady operation, and _____ hydraulic transmission through fluid coupling is suitable.

  1. ((a))

    low starting torque

  2. ((b))

    high starting speed

  3. ((c))

    increasing torque

  4. ((d))

    increasing speed

Show Answer
Answer: ((a))

low starting torque

193

_____ gives an idea about the pressure in a static fluid.

  1. ((a))

    Grashof’s law

  2. ((b))

    Weber’s law

  3. ((c))

    Pascal’s law

  4. ((d))

    Newton’s law

Show Answer
Answer: ((a))

Grashof’s law

194

Lancashire boiler is a __________ boiler

  1. ((a))

    Single pass

  2. ((b))

    Two pass

  3. ((c))

    Three pass

  4. ((d))

    Four pass

Show Answer
Answer: ((a))

Single pass

195

_____ property is stated by the first law of thermodynamics.

  1. ((a))

    Temperature

  2. ((b))

    Entropy

  3. ((c))

    Pressure

  4. ((d))

    Internal energy

Show Answer
Answer: ((a))

Temperature

196

The thermostat comes into operation at temperatures of about _____ in automobile water cooling systems.

  1. ((a))

    40°C

  2. ((b))

    60°C

  3. ((c))

    20°C

  4. ((d))

    80°C

Show Answer
Answer: ((a))

40°C

197

Which of the following is NOT applicable to fire-tube locomotive boilers?

  1. ((a))

    They are externally fired

  2. ((b))

    They are placed horizontally

  3. ((c))

    They are multi-tubular

  4. ((d))

    They are mobile in nature

Show Answer
Answer: ((a))

They are externally fired

198

______ occurs when the vapour pressure is more than pressure above a liquid surface at a given temperature.

  1. ((a))

    Freezing

  2. ((b))

    Condensation

  3. ((c))

    Boiling

  4. ((d))

    Gauging

Show Answer
Answer: ((a))

Freezing

199

______ fluid is incompressible.

  1. ((a))

    Newtonian

  2. ((b))

    Non-Newtonian

  3. ((c))

    Ideal

  4. ((d))

    Real

Show Answer
Answer: ((a))

Newtonian

200

______ process induces compressive residual stresses on a component to nullify the residual stresses within a steel structure.

  1. ((a))

    Welding

  2. ((b))

    Heat treatment

  3. ((c))

    Brazing

  4. ((d))

    Shot peening

Show Answer
Answer: ((a))

Welding

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