Held in 2023
Paper last updated:
Take this paper as a timed mock test. Review your answers after you submit.
Read the paper at your pace. Open an explanation when you need it.
‘NEST’ is related to ‘PHUW’ in a certain way based on the English alphabetical order. In the same way, ‘PWSR’ is related to ‘RZUU’. Which of the following is related to ‘MORG’ using the same logic?
KLOD
KLPD
KLQD
KLPE
Correct answer
KLOD
Two statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
All clothes are jeans.
All jeans are shirts.
Conclusions:
I. All clothes are shirts.
II. At least some shirts are jeans.
Only conclusion II follows
Both conclusions I and II follow
Only conclusion I follows
Neither conclusion I nor II follows
Correct answer
Only conclusion II follows
Point G is 9 m to the west of Point H. Point B is 10 m to the north of Point H. Point A is 18 m to the west of Point B. Point C is 28 m to the north of Point A. Point C is 23 m to the west of Point D. Point E is 18 m to the south of Point D. Point F is 5 m to the west of Point E. What is the distance between Point H and Point F?
20 m
18 m
15 m
10 m
Correct answer
20 m
Which of the following numbers will replace the question marks (?) in the given series?
523, 513, ?, 496, ?, 483, 478, 474
504, 489
500, 488
509, 490
510, 490
Correct answer
504, 489
‘5 FSH’ is related to ‘10 HUJ’ in a certain way. In the same way, ‘8 STH’ is related to ‘16 UVJ’. Which of the following is related to ‘12 PEP’ using the same logic?
24 MCM
18 NCN
24 NCN
6 NCN
Correct answer
24 MCM
Select the correct option that indicates the arrangement of the following words in a logical and meaningful order.
13254
14532
51324
53142
Correct answer
13254
Arrange the following words in a logical and meaningful order.
3, 5, 4, 2, 1
3, 4, 2, 1, 5
3, 4, 5, 2, 1
3, 4, 5, 1, 2
Correct answer
3, 5, 4, 2, 1
Select the correct mirror image of the given combination when the mirror is placed at 'PQ' as shown.
Correct answer
If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then what will come in place of the question mark (?) in the following equation?
11 – 42 × 6 ÷ 69 + 27 = ?
106
127
119
131
Correct answer
106
Select the Venn diagram that best illustrates the relationship between the following classes.
Sisters, Mothers, Teachers
Correct answer
Select the set in which the numbers are related in the same way as are the numbers of the following set.
(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding /subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
(7, 340, 3)
(4, 63, 1)
(3, 56, 7)
(9, 34, 1)
(3, 23, 4)
(2, 6, 1)
Correct answer
(3, 56, 7)
Select the option that represents the correct order of the given words as they would appear in an English dictionary.
2, 3, 1, 5, 4
1, 5, 3, 4, 2
1, 2, 3, 4, 5
2, 3, 1, 4, 5
Correct answer
2, 3, 1, 5, 4
Select the option which is related to the third word in the same way as the second word is related to the first word. (The words should be treated as meaningful words, and not related to each other on the basis of number of letters/consonants/vowels in the word.)
Organise : Jumble :: Overseas : ?
Alien
Foreign
Domestic
Abroad
Correct answer
Alien
Which two signs should be interchanged to make the given equation correct?
36 – 5 + 240 ÷ 6 × 17 = 203
× and +
÷ and +
÷ and –
– and ×
Correct answer
× and +
Select the combination of letters that when sequentially placed in the blanks of the given series, will complete the series.
R_ML_P_P_ NP R_ML_P_P_LN
PNRMLPNRMP
PNRMPLNRPM
PNMRLPNMRP
NPRMLNPRMP
Correct answer
PNRMLPNRMP
Select the correct combination of mathematical signs to sequentially replace the * signs and balance the given equation.
13 * 64 * 2 * 8 *11 = 18
× ÷ - +
× ÷ + -
Correct answer
Select the figure from the options that can replace the question mark (?) and complete the given pattern.
Correct answer
Select the option that represents the correct order of the given words as they would appear in an English dictionary.
1, 5, 3, 4, 2
1, 3, 5, 2, 4
1, 5, 3, 2, 4
1, 5, 2, 3, 4
Correct answer
1, 5, 3, 4, 2
Select the option that represents the letters which, when sequentially placed from left to right in the blanks below, will complete the letter series.
_ E N _ _ A E _ D R _ E
A D R N A
R N A D A
D N A A R
N R A D A
Correct answer
A D R N A
A is the mother of B.
B is husband of C.
D is father in law of C.
How is A related to D?
Mother
Wife
Sister
Father
Correct answer
Mother
Select the correct mirror image of the given combination when the mirror is placed at MN as shown below.
Correct answer
In a certain code language, “CTA” is coded as “1203” and “RXB” is coded as “22418”. How will “MQV” be coded in that language?
211419
211812
221713
201614
Correct answer
211419
Pointing to a man in a photograph, Rahul said, "He is the father of my father's daughter's daughter." How is the person in the picture related to Rahul?
brother in Law
Brother
Son
Nephew
Correct answer
brother in Law
Select the option that is related to the fifth term in the same way as the second term is related to the first term and the fourth term is related to the third term.
18 ∶ 52 ∶∶ 8 ∶ 22 ∶∶ 12 ∶ ?
28
38
34
43
Correct answer
28
In a certain code language, 'CARRY' is coded as YRUAC and 'HUMAN' is coded as NAPUH. How will 'NIGHT' be coded in that language?
TGHIN
THKIN
THJIN
TGHNI
Correct answer
TGHIN
Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
56 ∶ 14 ∶∶ 88 ∶ ? ∶∶ 32 ∶ 11
28
23
15
18
Correct answer
28
A paper is folded and cut as shown below. How will it appear when unfolded?
Correct answer
Maanvi cycles X km towards the north from her home and then turns right and cycles Y km to reach Point A. She then turns left and cycles for X+Y km to reach her shop. If she cycled for a total of 12 km from her home to her shop, what is the distance between Point A and her shop?
6 km
7 km
4 km
3 km
Correct answer
6 km
Select the option that is related to the third word in the same way as the second word is related to the first word. (The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word)
Ink : Pen :: Paint : ?
Sketch
Art
Brush
Paper
Correct answer
Sketch
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
ICMS, KDOT, ? , OFSV, QGUW
LEQU
MERU
MESU
MEQU
Correct answer
LEQU
Select the figure which will replace the question mark (?) in the given figure to complete the pattern.
Correct answer
Select the option that is related to the fourth term in the same way as the first term is related to the second term and the fifth term is related to the sixth term.
529 ∶ 21 ∶∶ ? ∶ 19 ∶∶ 841 ∶ 27
361
402
441
484
Correct answer
361
A paper is folded and cut as shown below. How will it appear when unfolded?
Correct answer
Which of the following numbers will replace the question mark (?) in the given series?
143, 153, 146, ?, 142, 152
145
144
156
155
Correct answer
145
Six friends are sitting in a circle facing the centre. Sumit sits second to the right of Amit. Karan is an immediate neighbour of Param. Tony sits third to the right of Amit. Dharam is an immediate neighbour of Amit and Sumit. Karan sits second to the right of Sumit.
Who sits to the immediate left of Amit?
Karan
Param
Dharam
Tony
Correct answer
Karan
8 friends, Abhay, Bala, Chan, Dev, Emran, Fanny, Geeta and Hema are sitting around a square table such that four of them sit at the corners and the other four sit at the exact centre of the sides. Those sitting at the corners are facing outside while those sitting at the centre of the sides are facing the centre. Dev is sitting third to the right of Geeta and is facing the centre. Emran is third to the left of Chan who is not sitting at the centre of the sides. Only one person sits between Emran and Fanny. Fanny is not Chan’s neighbour. Hema is sitting facing the centre. Abhay is not Fanny’s neighbour. Who is sitting third to the right of Chan?
Geeta
Bala
Emran
Fanny
Correct answer
Geeta
In a certain code language, ‘CROSS’ is written as ‘66’ and ‘CHART’ is written as ‘90’.
How will ‘SYMBOL’ be written in that language?
93
76
88
82
Correct answer
93
Which letter cluster will replace the question mark (?) to complete the given series?
JIVC, DEXH, XAZM, ?
RWBR
RWCR
RXCR
RXBR
Correct answer
RWBR
In a certain code language, ‘POLISH’ is written as ‘89’ and ‘CLIP’ is written as ‘72’. How will ‘CONTROL’ be written in that language?
92
99
89
106
Correct answer
92
Select the option in which the given figure is embedded (rotation is NOT allowed).
Correct answer
How many squares are there in the given figure?
16
22
20
18
Correct answer
16
Which letter cluster will replace the question mark (?) to complete the given series?
LDL, NHJ, PLH, RPF, ?
SSD
TSD
STC
TTD
Correct answer
SSD
Select the word pair in which the two given words are related to each other in the same way as the two words of the given pair are related to each other.
(The words should be considered meaningful words, and not related to each other on the basis of number of letters/consonants/vowels in the word.)
Propagate : Disseminate
Rapidity : Inertia
Sublime : Divine
Prompt : Quash
Sacred : Profane
Correct answer
Rapidity : Inertia
Which two signs should be interchanged to make the given equation correct?
9 × 182 + 14 ÷ 67 – 33 = 151
- and ×
× and +
÷ and -
÷ and +
Correct answer
- and ×
Select the word-pair in which the two words are related in the same way as are the two words in the given pair.
Yarn : Fabric
Lock : Key
Petrol : Car
Brick : Wall
Poem : Poet
Correct answer
Lock : Key
Which of the following option figures will complete the pattern in the figure given below?
Correct answer
There are seven family members Q, R, S, T, U, V and W. Each are of different ages. R is elder than only three other members. S is younger than V but elder than W, who is the youngest among all. Q is elder than R but younger than U. U is not the eldest among all.
How many family members are there between Q and W?
3
4
1
2
Correct answer
3
Select the number from among the given options that can replace the question mark (?) in the following series.
4, 80, 159, 244, 338, ?
434
443
444
433
Correct answer
434
Select the figure from the options that can replace the question mark (?) and complete the pattern.
Correct answer
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)
(5, 4, 33)
(7, 3, 55)
(11, 7, 135)
(9, 4, 98)
(8, 12, 78)
(14, 5, 260)
Correct answer
(11, 7, 135)
Which of the following is NOT listed in Fundamental Duties?
To safeguard public property and abjure violence
To promote the spirit of common dissonance
To protect and to improve the natural environment
To value and preserve the rich heritage
Correct answer
To safeguard public property and abjure violence
Which of the following instruments did Sheik Chinna Moulana, a famous instrumentalist from India, play?
Violin
Nadhaswaram
Ghatam
Mridangam
Correct answer
Violin
Which of the following statements is INCORRECT about migration in India?
Migration may be rural to urban.
Migration does not depend on social factors.
It may be urban to rural areas.
Migration has pull and push factors.
Correct answer
Migration may be rural to urban.
The 11th fundamental duty is related to ________.
health
culture
environment
education
Correct answer
health
What is Petrology ?
Science of rocks
Science of minerals
Science of metals
Science of gases
Correct answer
Science of rocks
Who classified Indian society into seven classes?
Strabo
Pliny
Arian
Megasthenes
Correct answer
Strabo
Identify the chemical formula for ethyne.
CH4
C2H6
C2H5OH
C2H2
Correct answer
CH4
Most of the crops being cereals, required approximately _________ of dietary water footprint.
74%
83%
28%
50%
Correct answer
74%
Which of statement is NOT correct regarding the earthquake waves?
P-wave can travel through only solid and liquid mediums but not gaseous mediums.
S-waves is that they can travel only through solid materials.
P-waves move faster and are the first to arrive at the surface.
P-waves are called the primary waves.
Correct answer
P-wave can travel through only solid and liquid mediums but not gaseous mediums.
Beta-carotene, lycopene, lutein and selenium are examples of:
sources of Vitamin C
antioxidants
anti-coagulants
immunosuppressants
Correct answer
sources of Vitamin C
One may be tempted to treat higher level of Gross Domestic Product (GDP) of a country as an index of greater well-being of the people of that country. But there are some reasons due to which this may not be correct. Which of the following is NOT one of these reasons?
Level of political awareness
Non-monetary exchanges
Distribution of GDP
Externalities
Correct answer
Level of political awareness
Which of the following classical dance styles is inscribed on the Gopuram of Chidambaram temple?
Mohiniyattam
Kathak
Kuchipudi
Bharatnatyam
Correct answer
Mohiniyattam
Chilika Lake is a brackish water lagoon, spread over which districts of Odisha state?
Angul, Cuttak and Puri
Puri, Bhubaneswar and Khurda
Puri, Khurda and Ganjam
Puri, Cuttack and Ganjam
Correct answer
Angul, Cuttak and Puri
Who was the leader of Kheda Satyagraha that was launched against the government?
Mahatma Gandhi
Sardar Patel
NG Ranga
Baba Ramchandra
Correct answer
Mahatma Gandhi
Which of the following are NOT antimicrobial drugs?
Antibiotics
Disinfectants
Antiseptics
Antacids
Correct answer
Antibiotics
Darshana Jhaveri and Devjani Chaliha are best known for their contributions to which of the given styles of Indian dance?
Bharatanatyam
Manipuri
Kuchipudi
Kathak
Correct answer
Bharatanatyam
In January 2023, who among the following has been appointed as the new Vice-Chief of the Indian Air Force?
Nagesh Kapoor
Rakesh Kumar Singh Bhadauria
Sandeep Singh
AP Singh
Correct answer
Nagesh Kapoor
Martyrdom of revolutionary ___________ took place on 27 February, 1931.
Sachindranath Sanyal
Batukeshwar Dutt
Chandrashekhar Azad
Bhagat Singh
Correct answer
Sachindranath Sanyal
In March 2023, which of the following organisations launched Mission ‘Har Payment Digital’?
Calcutta Stock Exchange Ltd.
Reserve Bank of India
State Bank of India
National Stock Exchange of India Ltd.
Correct answer
Calcutta Stock Exchange Ltd.
According to the Census of India 2011, what was the percentage of Sikh communities in the total population in India?
0.4%
79.8%
1.7%
14.2%
Correct answer
0.4%
Which cyber security measure involves verifying the identity of users before granting access to a system or network?
Firewall configuration
Multi-factor authentication
Regular software updates
Network encryption
Correct answer
Firewall configuration
Which of the following Articles of the Constitution of India mentions about the abolition of untouchability?
Article 21
Article 16
Article 17
Article 28
Correct answer
Article 21
As on 1st February 2023, who among the following is the Chairperson of the National Disaster Management Authority (NDMA)?
Droupadi Murmu
Amit Shah
Rajnath Singh
Narendra Modi
Correct answer
Droupadi Murmu
As per Finance Bill 2023, eligible start-ups will be able to set off and carry forward losses incurred during their first ten years of incorporation, even if there has been a change in shareholding, if all shareholders continue during the relevant period. The previous time limit of seven years has been increased to _________.
13 years
15 years
12 years
10 years
Correct answer
13 years
Which of the following is NOT a commodity money?
Silver
Gold
Copper
Utensils
Correct answer
Silver
All England Championships is associated with _______.
Table tennis
Badminton
Cricket
Tennis
Correct answer
Table tennis
The best-known _________ ruler was Prithviraja III who was defeated by an Afghan ruler Sultan Muhammad Ghori in 1192.
Rashtrakuta
Chahamana
Pala
Pratihara
Correct answer
Rashtrakuta
Which of the following is a common condition that develops when a sticky substance called plaque accumulates inside your arteries, causing them to harden and narrow?
Multiple sclerosis
Hyperaldosteronism
Atherosclerosis
Hypervitaminosis
Correct answer
Multiple sclerosis
As per the Budget 2022 announcement, a _______ income tax will be applied on earnings from virtual digital assets like cryptocurrencies.
25%
15%
30%
40%
Correct answer
25%
Which of the following is an aspartic acid-containing dipeptide sweetener?
Acesulfame K
Alitame
Saccharin
Sucralose
Correct answer
Acesulfame K
The total number of persons awarded under Jeevan Raksha Padak Series of Awards - 2022, which was announced by the President of India on 25th January 2023, stood at ________.
53
63
43
33
Correct answer
53
Which of the following pairs of coast and the state in which it is located is INCORRECT?
Malabar coast – Tamil Nadu
Goan coast – Karnataka
Kathiawar coast – Gujarat
Konkan coast – Maharashtra
Correct answer
Malabar coast – Tamil Nadu
Which of the following metals is present in nature in its free state?
Magnesium
Calcium
Platinum
Zinc
Correct answer
Magnesium
Which team won the 2022 Durand Cup?
ATK Mohun Bagan
Goa FC
Bengaluru Football Club
Mumbai City FC
Correct answer
ATK Mohun Bagan
How much of global trade is carried out through the sea route?
70%
90%
80%
60%
Correct answer
70%
When did 5G services begin to be offered in India?
10 August 2021
1 October 2022
19 September 2021
28 September 2022
Correct answer
10 August 2021
Which of the following protocols is used by email clients to send email to mail servers?
SMTP
TCP/IP
IMAP
POP3
Correct answer
SMTP
Name the Government scheme aimed to benefit women entrepreneurs from backward backgrounds or poor backgrounds.
Mahila Samriddhi Yojana
Ujjawala
Beti Bachao Beti Padhao
Pradhan Mantri Matru Vandana Yojana
Correct answer
Mahila Samriddhi Yojana
According to the Centre for Monitoring Indian Economy (CMIE), in which state of India was the unemployment rate recorded as 34.5%, as of April 2022?
Haryana
Assam
Maharashtra
Andhra Pradesh
Correct answer
Haryana
Which element was proposed by Glenn T Seaborg in 1955 through the bombardment of a minute amount of a rare, radioactive isotope of Einsteinium with α-particles in a 60-inch cyclotron?
Lawrencium
Nobelium
Mendelevium
Neptunium
Correct answer
Lawrencium
The Udyogmandal Canal is a part of which National Waterways?
National Waterways 4
National Waterways 2
National Waterways 3
National Waterways 1
Correct answer
National Waterways 4
Chhajju Khan is one of the founder of which Gharana?
Mewati Gharana
Agra Gharana
Bhendi Bazaar Gharana
Lucknow Gharana
Correct answer
Mewati Gharana
What is the respective percentage of CO2, N2, and O2 in the atmosphere?
CO2 = 0.04%, N2 = 20.95%, O2 = 78.08%
CO2 = 0.03%, N2 = 68.08%, O2 = 30.95%
CO2 = 0.08%, N2 = 70.08%, O2 = 29.95%
CO2 = 0.04%, N2 = 78.08%, O2 = 20.95%
Correct answer
CO2 = 0.04%, N2 = 20.95%, O2 = 78.08%
The Constitution (87th Amendment) Act, 2003 provided for the delimitation of the constituencies on the basis of the census of __________.
1981
2001
1971
1991
Correct answer
1981
If one goes from Rajasthan in the west to Orissa in the east, what is the correct order of Peninsulas one will come across?
Marwar Plateau
Malwa Plateau
Chhota Nagpur Plateau
Chhattisgarh Plateau
1 - 2 - 4 - 3
3 - 1 - 2 - 4
2 - 3 - 1 - 4
1 - 2 - 3 - 4
Correct answer
1 - 2 - 4 - 3
Article ________ of the Constitution of India states that the Chief Minister shall be appointed by the Governor.
161
163
165
164
Correct answer
161
What is the name of the organic compound in the given figure?
Tropone
Aniline
Cyclohexene
Benzene
Correct answer
Tropone
When was the Indian Association founded?
1871
1875
1876
1874
Correct answer
1871
Which of the following is/are responsible for nasal congestion?
Histamine
Tetracycline
Tranquilizers
Analgesics
Correct answer
Histamine
Which of the following classical dancers won the Padma Shri award in 2022 for the dance form of Kuchipudi?
Birju Maharaj
Gaddam Padmaja Reddy
Hema Malini
Sujata Mohapatra
Correct answer
Birju Maharaj
The following Temperature – Entropy diagram represents a Refrigeration system operates on the reversed Carnot cycle. The higher temperature of the refrigerant in the system is 35°C and the lower temperature is -15°C. What will be the C.O.P?
4.82
5.16
3.45
2.75
Correct answer
4.82
In the shaping process, the cutting tool moves _________.
in a parabolic motion
in an elliptical motion
in a circular motion
in a straight line
Correct answer
in a parabolic motion
An air standard diesel cycle working with a compression ratio of 13 and cut off takes places at 5 % of the stroke volume. The value of cut off ratio will be
1.9
1.6
2.3
1.3
Correct answer
1.9
According to the American Society of Mechanical Engineers (ASME), the evaporation of 15.63 kg of water at 100°C per hour from 100°C feedwater in a steam boiler is known as __________.
boiler horsepower
actual evaporation
equivalent evaporation
boiler efficiency
Correct answer
boiler horsepower
An oil of specific gravity 0.8 is flowing through a pipe. A differential manometer is connected at the two points, say A and B, and shows a difference in the mercury level as 20 cm. What will be the difference between the pressures at the two points? Take density of mercury = 13600 kg/m3 and g = 10 m/s2.
25.6 kN/m2
2560 N/m2
25.6 N/m2
1280 kN/m2
Correct answer
25.6 kN/m2
Flow process is used for which of the following systems?
Closed system
Both open and closed systems
Isolated system
Open system
Correct answer
Closed system
A piezometer is connected to a point in a pipe to measure the pressure of water flowing through it. If the piezometer reads 0.4 m, what will be the gauge pressure at that point?
Take atmospheric pressure = 101325 pascals and g = 10 m/s2
4000 pascals
105325 pascals
40 kilopascals
97325 pascals
Correct answer
4000 pascals
Following figure shows which of the following parts of a steam generator?
Safety valve
Blow-off cock
Feed check valve
Steam stop valve
Correct answer
Safety valve
The Energy Gradient line will______.
lie above the Hydraulic Gradient line
lie below the Hydraulic Gradient line
coincide with pipe axis
coincide with Hydraulic Gradient line
Correct answer
lie above the Hydraulic Gradient line
A Carnot cycle operates between two temperatures T1 and T2. The efficiency of the cycle is given by η = (T1 − T2) / T1. Which of the following statements is correct?
The efficiency of the Carnot cycle is always equal to that of any other heat engine operating between the same two temperatures.
The efficiency of the Carnot cycle depends on the working substance used.
The efficiency of the Carnot cycle is always less than that of any other heat engine operating between the same two temperatures.
The efficiency of the Carnot cycle is always greater than that of any other heat engine operating between the same two temperatures.
Correct answer
The efficiency of the Carnot cycle is always equal to that of any other heat engine operating between the same two temperatures.
The dimensional formula of specific gravity is given by:
M2L-3T0
M1L-3T0
M1L-3T-2
M0L0T0
Correct answer
M2L-3T0
The Molten metal is used in ___________ process
Casting
Deep Drawing
Machining
Forging
Correct answer
Casting
When any gas is heated at constant pressure, its change in volume varies directly with change in absolute temperature. This law is known as ________.
Joule's law
Avogadro's law
Boyle's law
Charles' law
Correct answer
Joule's law
A heat engine operates between a source at 600 K and a sink at 300 K. What is the maximum possible efficiency of the engine according to the Kelvin-Planck statement of the second law of thermodynamics?
50%
67%
33.3%
25%
Correct answer
50%
Which of the following statements is correct about a working engine?
Operation of both the flywheel and the governor is intermittent.
Operation of the governor is continuous, whereas operation of the flywheel is more or less intermittent.
Operation of both the flywheel and the governor is continuous.
Operation of the flywheel is continuous, whereas operation of the governor is more or less intermittent.
Correct answer
Operation of both the flywheel and the governor is intermittent.
The enthalpy of water is considered as ‘zero’ at _______.
37°C
4°C
100°C
0.01°C
Correct answer
37°C
The frictional resistance in a turbulent flow is independent of the __________.
velocity of fluid
surface roughness
pressure
density of fluid
Correct answer
velocity of fluid
The function of condenser in refrigeration cooling system is _________.
to give external work to the system
to convert liquid refrigerant into vapour refrigerant
to reject heat out of the system
to give heat into the system
Correct answer
to give external work to the system
Which of the following machining operations is NOT related to turning?
Boring
Facing
Shaping
External threading
Correct answer
Boring
There are two horizontal pipes in which water is flowing. If we have to find the pressure difference between these two horizontal pipes using an inverted manometer, and two manometric fluids with specific gravities of 13.5 and 0.9 are available, then which manometric fluid will be appropriate?
Fluid with the specific gravity of 13.5
Cannot be predicted
Both the fluids can be used
Fluid with the specific gravity of 0.9
Correct answer
Fluid with the specific gravity of 13.5
In a steam boiler, an economiser is used for heating of ________.
flue gases
fuel
feedwater
air
Correct answer
flue gases
What is the hydraulic radius for a circular pipe running full?
0.5d
0.75d
0.25d
d
Correct answer
0.5d
In the thermodynamic system, the primary driving force for mass transfer is __________.
mass difference
pressure difference
concentration difference
temperature difference
Correct answer
mass difference
Generation of steam in a boiler is an example of an _________.
isobaric process
isothermal process
adiabatic process
isochoric process
Correct answer
isobaric process
A seamless pipe having a diameter of 600 mm and thickness of 9 mm, contain the fluid under a pressure of 4 MPa, find the longitudinal stress developed in the pipe.
77.7 Mpa
88.8 Mpa
66.6 Mpa
133.3 Mpa
Correct answer
77.7 Mpa
The mass of water evaporated per unit mass of fuel burnt is termed as _________ steam boilers.
boiler performance of
boiler efficiency of
actual evaporation in
equivalent evaporation in
Correct answer
boiler performance of
The flow through a capillary tube is an example of ____________ flow.
laminar
turbulent
compressible
transition
Correct answer
laminar
The energy loss caused by abrupt enlargement is expressed by:
\( \left(\frac{V_1-V_2}{2}\right)^2 \)
\( \left(\frac{V_1-V_2}{2 g}\right)^2 \)
\(\left(\frac{V_1-V_2}{g}\right)^2 \)
\(\left(\frac{V_1-V_2}{\sqrt{2 g}}\right)^2\)
Correct answer
\( \left(\frac{V_1-V_2}{2}\right)^2 \)
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is:
reversed Otto cycle
reversed Brayton cycle
Joule cycle
reversed Carnot cycle
Correct answer
reversed Otto cycle
For internal laminar flow, the variation of shear stress in the radial direction is:
parabolic
hyperbolic
linear
exponential
Correct answer
parabolic
Which of the following is a water-tube boiler?
Cochran boiler
Lancashire boiler
Cornish boiler
Babcock & Wilcox boiler
Correct answer
Cochran boiler
Choose the correct mathematical relation of absolute pressure.
Pabs = Patm + Pguage
Pabs = Patm + 2Pguage
Pabs = Patm - Pguage
Pabs = Patm/Pguage
Correct answer
Pabs = Patm + Pguage
Select the correct statement of Lami’s theorem.
If three forces acting on a body are said to be in equilibrium, then each force is directly dependent on sine of the angle between the other two forces.
If three forces are non-coplanar, then each force is directly dependent on sine of the angle between the other two forces.
If three forces are not in equilibrium, then each force is inversely proportional to sine of the angle between the other two forces.
If two forces are in equilibrium, then each force is directly proportional to sine of the angle between them.
Correct answer
If three forces acting on a body are said to be in equilibrium, then each force is directly dependent on sine of the angle between the other two forces.
What will be the absolute pressure (approximately) at a point 3 m below the free surface of a liquid having a density of 1530 kg/m3, if the atmospheric pressure is equivalent to 750 mm of mercury? (The specific gravity of mercury is 13.6 and density of water is 1000 kg/m3, g = 9.81 m/sec2)
95,648 N/m2
78,560N/m2
1,00,250N/m2
1,45,090 N/m2
Correct answer
95,648 N/m2
What will be the mass density of one litre of a fluid which weighs 9.81 N? (Take g = 9.81 m/sec2)
1000 gm/cm3
100 gm/cm3
100 kg/m3
1000 kg/m3
Correct answer
1000 gm/cm3
Match the following.
| Halocarbon Refrigerants | Examples | ||
|---|---|---|---|
| 1. | Halons | a. | R - 32 |
| 2. | CFCs | b. | R - 22 |
| 3 | HFCs | c. | R - 11 |
| 4. | HCFCs | d. | R - 10 |
1 - d; 2 - c; 3 - b; 4 - a
1 - a; 2 - c; 3 - d; 4 - b
1 - d; 2 - a; 3 - c; 4 - b
1 - d; 2 - c; 3 - a; 4 - b
Correct answer
1 - d; 2 - c; 3 - b; 4 - a
Under steady state operation of a cone clutch, if semi-cone angle (α) decreases then _____________.
the axial force increases
the torque produced by clutch increases
the torque produced by clutch decreases
does not affect the axial force
Correct answer
the axial force increases
In a steam boiler, the actual evaporation is 8 kg of steam per kg of fuel burnt. The heat supplied per kg of water is 2500 kJ/kg. Higher calorific value of fuel is 25,000 kJ/kg. What is the boiler efficiency?
0.75
0.10
0.80
0.25
Correct answer
0.75
The pressure at the inlet of a refrigerant compressor is called _________.
discharge pressure
back pressure
suction pressure
critical pressure
Correct answer
discharge pressure
The air pre-heater increases the temperature of ___________ before it/they enter(s) the furnace.
fuel
flue gases
air
feedwater
Correct answer
fuel
What is the function of the transfer port inside the engine?
It is the port through which the engine gets the fuel.
It is used to move charge from the crankcase to the cylinder head portion.
It is the port through which scavenging of the gases takes place.
It is used to transfer unburnt fuel to the exhaust port.
Correct answer
It is the port through which the engine gets the fuel.
Which of the following is the correct statement relating to the centre of pressure on an immersed surface?
It is the point where the weight of body the acts.
It is the point where the resultant pressure acts.
It is the point where the weight of the body and resultant pressure acts.
It is the point where the normal pressure acts.
Correct answer
It is the point where the weight of body the acts.
The pressure responsive element in the Bourdon tube pressure gauge is made of _________.
Inconel
cast iron
aluminium
bronze
Correct answer
Inconel
The term ρV2/2 used in Bernoulli theorem is basically:
dynamic pressure
hydrostatic pressure
static pressure
stagnation pressure
Correct answer
dynamic pressure
Choose the correct option related to lathe turning operation.
Work piece will rotate
Both tool and work piece will not rotate
Both tool and work piece will rotate
Tool will rotate
Correct answer
Work piece will rotate
The cyclic integral of Q/T for a reversible cycle is equal to zero. This statement is known as _________.
Clausius theorem
the principle of Carathéodory
Rankine theorem
Carnot theorem
Correct answer
Clausius theorem
Which of the following is NOT a type of wet sump lubrication system?
Splash lubrication system
Pump lubrication system
Pressure lubrication system
Mist lubricating system
Correct answer
Splash lubrication system
The highest temperature during the cycle, in a vapour compression refrigeration system, occurs after:
condensation
evaporation
compression
expansion
Correct answer
condensation
Which impellers are more likely to be clogged if stringy material or solids are pumped?
Cannot be predicted
Open impeller
Semi-open impeller
Closed impeller
Correct answer
Cannot be predicted
The correct relation between the modulus of elasticity (E) and modulus of rigidity (G) is:
Given, µ = Poisson’s ratio.
G = 2E(1 + µ)
E = 4G(1 + µ)
E = 2G(1 + µ)
G = 4E(1 + µ)
Correct answer
G = 2E(1 + µ)
The ratio of the energy received by the steam to the energy supplied by the fuel to produce steam in a steam boiler is known as __________.
boiler horsepower
boiler efficiency
equivalent evaporation
actual evaporation
Correct answer
boiler horsepower
In an I.C. engine, when the primary circuit in the coil ignition system breaks, the voltage produced across the secondary terminal is in the range of _______.
80 V to 120 V
2000 V to 5000 V
800 V to 1200 V
8000 V to 12,000 V
Correct answer
80 V to 120 V
Pressure head of a fluid represents:
energy per unit mass
energy per unit volume
energy per unit length
energy per unit weight
Correct answer
energy per unit mass
Which of the following does NOT describe the Diesel cycle?
Limited maximum temperature
High compression ratio
Constant volume heat addition
No spark plug needed
Correct answer
Limited maximum temperature
An engine is working with temperature limits of 29°C and 229°C. It receives 1000 kW and rejects 429 kW of heat. Possible cycle executed by the engine is
Irreversible cycle
Impossible cycle
Carnot cycle
Reversible cycle
Correct answer
Irreversible cycle
Which turbine is suitable where a large discharge at low head is available?
Pelton turbine
Francis turbine
Kaplan turbine
Turgo turbine
Correct answer
Pelton turbine
Which of the following statements is INCORRECT?
The value of dryness fraction always lies between 0 and 1.
The value of dryness fraction is 0 for saturated water condition.
The value of dryness fraction is 1 for saturated steam condition.
The value of dryness fraction is greater than 1 for superheated steam condition.
Correct answer
The value of dryness fraction always lies between 0 and 1.
A body of weight 100 N is lying on a rough horizontal surface, and the horizontal force of 50 N is applied on the body as shown in the figure, which is just enough to move the body. What will be the coefficient of friction?
0.4
0.6
0.5
0.3
Correct answer
0.4
Which of the following is NOT a component of the water-cooling system with radiator?
Condenser
Thermostat
Fan
Centrifugal pump
Correct answer
Condenser
Due to the refinement of grains, mechanical properties such as toughness, ductility, elongation and reduction in the area are improved in ___________ process
Cold working
Hot working
Forming
Joining
Correct answer
Cold working
A rectifier is fitted in an ammonia absorption plant to:
remove the unwanted water vapour by heating the vapour mixture
remove the unwanted water vapour by cooling the vapour mixture and condensing the water vapour
superheat ammonia vapour
only remove the unwanted water vapour by cooling the vapour mixture
Correct answer
remove the unwanted water vapour by heating the vapour mixture
A cyclic heat engine of thermal efficiency 80% does 60 kJ of work per cycle. The heat rejected per cycle will be equal to __________.
15 kJ
48 kJ
75 kJ
20 kJ
Correct answer
15 kJ
The property of tool material to retain its hardness at elevated temperature is known as:
Elasticity
Toughness
Red hardness
Plasticity
Correct answer
Elasticity
The expansion process in a vapour compression refrigeration cycle is a/an ___________.
constant volume process
reversible isothermal process
isenthalpic process
isentropic process
Correct answer
constant volume process
Which of the following air-cooled condensers are used only in small capacity applications such as domestic refrigerators and room air conditioners?
Base mounted air-cooled condensers
Natural convection air-cooled condensers
Remote air-cooled condensers
Shell and coil condensers
Correct answer
Base mounted air-cooled condensers
The position of centre of pressure depends on which of the following?
Location of object from the free surface
Surface tension of fluid
Weight of the object immersed in liquid
Velocity of liquid
Correct answer
Location of object from the free surface
Find the enthalpy of 1 kg of dry and saturated steam at 10 bar if sensible heat at 10 bar is 762.8 kJ/kg and latent heat of evaporation at 10 bar is 2015.3 kJ/kg.
762.8 kJ
1252.5 kJ
2015.3 kJ
2778.1 kJ
Correct answer
762.8 kJ
In a mechanical draught system, draught is produced by a _____________.
chimney
blower
pump
chain grate stoker
Correct answer
chimney
Which of the following milling operations is used to produce a flat surface parallel to the axis of rotation of the cutter?
End milling
Plain milling
Face milling
Profile milling
Correct answer
End milling
The speed ratio of a compound gear train is defined as _______.
\(\rm\frac{Product\ of\ number\ of\ teeth\ on\ driven\ shafts} {Product\ of\ number\ of\ teeth\ on\ driver\ shafts} \)
\(\rm \frac{Product\ of\ speed\ of\ followers} {Product\ of\ speed\ of\ drivers} \)
\(\rm \frac{Speed\ of\ last\ follower} {Speed\ of\ first\ driver} \)
\(\rm \frac{Product\ of\ number\ of\ teeth\ on\ driver\ shafts} {Product\ of\ number\ of\ teeth\ on\ driven\ shafts}\)
Correct answer
\(\rm\frac{Product\ of\ number\ of\ teeth\ on\ driven\ shafts} {Product\ of\ number\ of\ teeth\ on\ driver\ shafts} \)
Which of the following statements is true about a four-stroke engine in comparison to a two-stroke engine?
Thermal efficiency and part-load efficiency of a four-stroke engine are better than those of a two-stroke engine.
Volumetric efficiency of a four-stroke engine is comparatively low, due to less power output.
Owing to one power stroke in two revolutions, a lighter flywheel is required.
A four-stroke engine only uses the diesel cycle, while a two-stroke engine only uses the Otto cycle.
Correct answer
Thermal efficiency and part-load efficiency of a four-stroke engine are better than those of a two-stroke engine.
The behaviour of a material at different stages of loading is represented by a diagram called the _________ diagram.
hysteresis
stress strain
iron carbon
circumferential stress
Correct answer
hysteresis
If Q1 is the heat rejected to the source and Q2 is the heat extracted from the sink, the coefficient of performance (COP) of a heat pump is given by _______.
\( \frac{Q_2}{Q_1-Q_2}\)
\( \frac{Q_1-Q_2}{Q_1} \)
\( \frac{Q_1-Q_2}{Q_2} \)
\( \frac{Q_1}{Q_1-Q_2}\)
Correct answer
\( \frac{Q_2}{Q_1-Q_2}\)
If a turbine is working under different heads, the behaviour of the turbine can be easily determined from the values of _______________.
unit quantities
number of vanes
size of runner
blade angles
Correct answer
unit quantities
The net effect of superheating after compression in vapour compression refrigeration cycle is to have:
decrease in refrigeration effect
low C.O.P
decrease in refrigeration capacity
high C.O. P
Correct answer
decrease in refrigeration effect
The value of atmospheric pressure in bar is _______________.
2.01324
0.9874
1.5643
1.01325
Correct answer
2.01324
Modern Francis turbine is as example of:
axial flow turbine
impulse turbine
mixed flow turbine
radial flow turbine
Correct answer
axial flow turbine
For the same compression ratio, which of the following processes will require the least compression work?
Polytropic process
Isochoric process
Isothermal process
Adiabatic process
Correct answer
Polytropic process
Which of the following statements is correct for compressibility?
Compressibility is reciprocal of bulk modulus
Compressibility is square root of bulk modulus
Compressibility is equal to bulk modulus
Compressibility is square of bulk modulus
Correct answer
Compressibility is reciprocal of bulk modulus
If the mechanical efficiency and hydraulic efficiency of a turbine are 60% and 70%, respectively, then what will be the overall efficiency of the turbine?
60%
65%
42%
70%
Correct answer
60%
In a lubrication method, the oil is kept in the crank case sump and it is splashed by using the end of a connecting rod to various components of the engine. This method is called ________.
pump lubrication
splash lubrication
sump lubrication
pressure lubrication
Correct answer
pump lubrication
Which thermodynamic property of steam does NOT change in throttling calorimeter?
Enthalpy
Pressure
Temperature
Entropy
Correct answer
Enthalpy
For hydraulic turbines, the ratio of overall efficiency and mechanical efficiency is called _________ .
hydraulic efficiency
cannot be predicted
frictional power
volumetric efficiency
Correct answer
hydraulic efficiency
Natural draft cooling towers are also known as ________.
atmospheric cooling towers
artificial cooling towers
automatic spray cooling towers
mechanical draft cooling towers
Correct answer
atmospheric cooling towers
Which of following losses fall into the category of major losses?
Head loss due to bend of pipe
Head loss due to sudden contraction
Head loss due to sudden enlargement
Head loss due to friction
Correct answer
Head loss due to bend of pipe
If the specific weight of a fluid is 19620 N/m3, then what will be its specific volume in m3/kg? (Take g = 9.81 m/sec2)
5 × 10-3
0.5 × 10-3
0.5 × 10-5
5 × 10-5
Correct answer
5 × 10-3
The friction experienced by the body when the body tends to move is known as:
static friction
sliding friction
dynamic friction
rolling friction
Correct answer
static friction
A centrifugal pump is running at the speed of 1000 rpm against a head of 40 m. If its speed is changed to 3000 rpm, then it will work against a head of:
80 m
360 m
120 m
40 m
Correct answer
80 m
The mass flow is same at inlet and outlet in case of ___________.
isolated system
steady flow process
non-steady flow process
closed system
Correct answer
isolated system
In an ammonia vapour compression system, the pressure in the evaporator is 2 bar. Ammonia at exit is 0.85 dry and at entry its dryness fraction is 0.19. During compression, the work done per kg of ammonia is 150 kJ. The latent heat and specific volume at 2 bar are 1325 kJ/kg and 0.58 m3/kg, respectively. What will be its C.O.P?
3.82
4.34
6.74
5.83
Correct answer
3.82
The speed ratio for an impulse turbine can be taken as __________.
0.3
0.75
0.6
0.45
Correct answer
0.3
Which of the following statements is true for a throttling process?
It is a constant enthalpy process.
It is an isothermal process.
It is a reversible process.
It is an isentropic process.
Correct answer
It is a constant enthalpy process.
The value of enthalpy of vaporisation approaches to zero on the saturation curve of water on a temperature entropy diagram:
below critical point
never approaches to zero
at critical point
above critical point
Correct answer
below critical point
_______ is a metal working process which is an example of forging.
Casting
Welding
Extrusion
Upsetting
Correct answer
Casting
Which of the following is the correct relation for specific speed of turbine?
Specific speed is directly proportional to head under which the turbine is working
Specific speed is directly proportional to square of the head under which the turbine is working
Specific speed is directly proportional to shaft power
Specific speed is directly proportional to square root of shaft power
Correct answer
Specific speed is directly proportional to head under which the turbine is working
Vapour pressure is primarily associated with which phenomenon?
Capillarity
Cavitation
Water hammering
Surging
Correct answer
Capillarity
For a two-stage reciprocating air compressor, the section pressure is 1.6 bar and the delivery pressure is 40 bar. What is the value of the ideal intercooler pressure (in bar)?
9
8
4.56
20.8
Correct answer
9
The point at which all the three phases – solid, liquid, and vapour co-exist in equilibrium in a p-T diagram is known as ________.
boiling point
triple point
melting point
critical point
Correct answer
boiling point
The duplex feed pump is:
Centrifugal pump
Single-acting reciprocating pump
Double-acting reciprocating pump
Axial-flow pump
Correct answer
Centrifugal pump
Which of the following statements is true regarding vapour-compression refrigeration system (VCRS)?
Power consumption of VCRS with air cooled condenser is more as compared to that of VCRS with water cooled condenser.
VCRS with both water cooled and air cooled condenser will require same power for same refrigeration effect.
Power consumption of VCRS with air cooled condenser may be lesser or greater than that of VCRS with water cooled condenser.
Power consumption of VCRS with air cooled condenser is less as compared to that of VCRS with water cooled condenser.
Correct answer
Power consumption of VCRS with air cooled condenser is more as compared to that of VCRS with water cooled condenser.
200 questions in the full paper