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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.
What should come in place of the question mark (?) in the given series?
2, 5, 13, 28, 52, 87, ?
130
98
135
107
Correct answer
130
In a certain code language, ‘HAIR’ is coded as ‘7935’ and ‘AGED’ is coded as ‘4892’. What is the code for ‘A’ in the given language?
5
9
3
4
Correct answer
5
The position(s) of how many letters will remain unchanged if each of the letters in the word STAMPED is arranged in the English alphabetical order?
Two
Three
Four
One
Correct answer
Two
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 :
All frames are rocks.
All rocks are clips.
All clips are towels.
Conclusion (I) : All frames are towels.
Conclusion (II) : At least some clips are frames.
Both conclusions (I) and (II) follow
Only conclusion (II) follows
Neither conclusion (I) nor (II) follows
Only conclusion (I) follows
Correct answer
Both conclusions (I) and (II) follow
If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−‘, what will come in place of the question mark ‘?’ in the following equation?
10 B 2 D 15 A 3 C 7 = ?
22
20
21
24
Correct answer
22
In a certain code language, ‘FLEW’ is coded as ‘8462’ and ‘LORD’ is coded as ‘9736’. What is the code for ‘L’ in the given code language?
6
4
7
9
Correct answer
6
In a certain code language,
A + B means ‘A is the sister of B’
A # B means ‘A is the brother of B’
A × B means ‘A is the wife of B’
A @ B means ‘A is the father of B’
Based on the above, how is E related to M if ‘E # F × H @ G + M’?
Brother
Mother’s father
Mother’s brother
Father
Correct answer
Brother
This question consists of a pair of words which have a certain relationship to each other. Select the pair which has the same relationship.
(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.)
Altimeter : Altitudes
Fathometer : Presure
Taseometer : Wind
Protractor : Light
Hygrometer : Humidity
Correct answer
Fathometer : Presure
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
DMY, BKW, ZIU, XGS, ?
UDP
WCR
UFR
VEQ
Correct answer
UDP
What should come in place of the question mark (?) in the given series.
6, 3, 12, 6, 24, ?, 48, 24, 96
12
48
6
24
Correct answer
12
In a certain code language, ‘apple is healthy’ is written as ‘di jl ew’ and ‘apple is red’ is written as ‘di ko ew’. How is ‘red’ written in the given language?
jl
ew
di
ko
Correct answer
jl
What should come in place of the question mark (?) in the given series based on the English alphabetical order ?
INJ, LQM, OTP, RWS, ?
VUZ
UVZ
VZU
UZV
Correct answer
VUZ
Six friends Abby, Bunny, Chan, Dolly, Emma and Fanny have different weights. Dolly’s weight is an odd number. Dolly is heavier than Emma but not the heaviest. Chan is heavier than Fanny but lighter than Dolly. Chan is not heavier than Emma but is heavier than Fanny and Abby. Abby’s weight is not an odd number. The lightest weight is 45 kilograms and the heaviest weight is 80 kilograms.
Who is the heaviest person in the group?
Abby
Bunny
Emma
Chan
Correct answer
Abby
What should come in place of the question mark (?) in the given series based on the English alphabetical order ?
RQO, LKI, FEC, ZYW, TSQ, ?
NMK
MNL
NML
MNK
Correct answer
NMK
The position(s) of how many letters will remain unchanged if each of the letters in the word FOREIGN is arranged in the English alphabetical order?
None
One
Two
Three
Correct answer
None
A, B, C, D, E and F are sitting around a circular table facing the centre (not necessarily in the same order). B is sitting to the immediate right of F and immediate left of C. C is sitting to the immediate left of E. A is sitting to the immediate right of E and to the immediate left of D. Who is sitting to the immediate left of F?
A
C
B
D
Correct answer
A
Select the word-pair that best represents a similar relationship to the one expressed in the pair of words given below.
(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.)
Mycology : Fungi
Ornithology : Eggs
Seismology : Earthquakes
Paedology : Planets
Entomology : Birds
Correct answer
Ornithology : Eggs
Madan starts from point A and drives 4 km towards the South. He then takes a left turn and drives 5 km. he then takes a right turn and drives 2 km. He then takes another right turn and drives 3 km. He takes a final right turn and drives 6 km to reach point B. How far (shortest distance) and towards which direction should he drive to reach Point A again? (All turns are 90 degrees turns only unless specified)
3 km West
2 km West
2 km East
3 km East
Correct answer
3 km West
Select the option that indicates the arrangement of the following words in meaningful and logical order.
1, 3, 2, 4, 5
2, 1, 5, 4, 3
5, 1, 3, 2, 4
4, 1, 5, 3, 2
Correct answer
1, 3, 2, 4, 5
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.)
(45, 23, 73)
(19, 27, 51)
(22, 29, 52)
(12, 19, 30)
(16, 14, 35)
(31, 17, 48)
Correct answer
(22, 29, 52)
Select the figure from the options that can replace the question mark (?) and complete the given pattern.
Correct answer
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘÷’ are interchanged and ‘×’ and ‘−’ are interchanged?
10 + 2 − 10 ÷ 5 × 10 = ?
35
45
32
40
Correct answer
35
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. 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.)
(6, 34)
(8, 46)
(12, 76)
(10, 58)
(7, 38)
(4, 24)
Correct answer
(12, 76)
LQNR is related to PURV in a certain way based on the English alphabetical order. In the same way, OTQU is related to SXUY. To which of the following is GLIM related, following the same logic?
PKMQ
PQMK
KPMQ
QPMK
Correct answer
PKMQ
LQKN is related to PUOR in a certain way based on the English alphabetical order. In the same way, INHK is related to MRLO. To which of the following is QVPS related, following the same logic?
WZTU
UZWT
WZUT
UZTW
Correct answer
WZTU
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 / deleting / 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.)
(9, 576, 8)
(7, 252, 6)
(10, 40, 2)
(4, 82, 5)
(15, 210, 7)
(8, 650, 10)
Correct answer
(10, 40, 2)
What should come in place of ‘?’ in the given series?
394, 465, 536, 607, 678, ?
756
736
768
749
Correct answer
756
142 is related to 92 following a certain logic. Following the same logic, 255 is related to 205. To which of the following is 457 related following the same logic?
(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.)
407
417
427
437
Correct answer
407
Select the option figure that can replace the question mark (?) in the figure given below to complete the pattern.
Correct answer
IMPU is related to LPSX in a certain way based on the English alphabetical order. In the same way, BEKN is related to EHNQ. To which of the following is CLQS related, following the same logic?
FOTV
IJSH
PLNF
ACLK
Correct answer
FOTV
What will come in place of the question mark (?) in the following equation if ‘+’ and ‘÷’ are interchanged and ‘×’ and ‘−’ are interchanged?
21 ÷ 15 × 52 + 13 – 7 = ?
8
10
12
7
Correct answer
8
A, B, C, D, E, and F are sitting at a circular table facing the centre (not necessarily in the same order). A is to the immediate left of B, E is third to the right of B, D is to the immediate right of C. F is third to the right of C. Who are the immediate neighbours of E?
a) A and B
b) B and D
c) D and F
d) F and B
(b)
(c)
(d)
(a)
Correct answer
(b)
In a certain code language, ‘SANG’ is coded as ‘3618’, and ‘RANG’ is coded as ‘6438’. What is the code for ‘S’ in that language?
6
3
1
8
Correct answer
6
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 conclusion(s) logically follow(s) from the statements.
Statements :
Some cars are grass.
All trucks are cars.
Conclusion 1 : Some trucks are not cars.
Conclusion 2 : Some trucks are grass.
Both conclusion 1 and 2 follow
Only conclusion 1 follows
Only conclusion 2 follows
Neither conclusion 1 nor 2 follows
Correct answer
Both conclusion 1 and 2 follow
What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘×’ are interchanged and ‘−’ and ‘÷’ are interchanged?
12 + 4 − 24 × 11 ÷ 13 = ?
0
10
-20
-10
Correct answer
0
In a certain code language,
‘A + B’ means ‘A is the brother of B’,
‘A − B’ means ‘A is the mother of B’,
‘A × B’ means ‘A is the wife of B’ and
‘A ÷ B’ means ‘A is the father of B’.
How is B related to L if ‘B × G ÷ T + K − L’?
Father’s father
Sister’s daughter
Mother’s mother
Brother’s daughter
Correct answer
Father’s father
STAR is related to TWCV in a certain way based on the English alphabetical order. In the same way, PARK is related to QDTO. To which of the following is MILK related, following the same logic?
NLMO
MLMO
NLNO
MLNO
Correct answer
NLMO
Select the option in which the given figure is embedded (rotation is NOT allowed).
Correct answer
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
Correct answer
OB 8 is related to UE 3 in a certain way. In the same way, TO 11 is related to ZR 6. To which of the following is IB 8 related, following the same logic?
OE 3
PF -3
PE 3
OF 3
Correct answer
OE 3
Select the correct option that indicates the arrangement of the following planets according to their size.
5, 3, 4, 2, 1
5, 1, 3, 4, 2
5, 4, 2, 1, 3
5, 2, 1, 3, 4
Correct answer
5, 3, 4, 2, 1
Jennifer starts from Point D and drives 3 km towards the north. She then takes a left turn and drives 10 km. She then takes another left turn and drives 6 km. She takes one more left turn and drives 5 km. She then takes a right turn and drives 3 km. She takes a final left turn and drives 5 km to reach point E. How far (shortest distance) and towards which direction should she drive in order to reach Point D again? (All turns are 90 degree turns only, unless specified)
6 km North
3 km North
5 km East
5 km North
Correct answer
6 km North
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
Correct answer
Select the option in which the numbers share the same relationship as that shared by the given number triads.
120 - 100 - 60
240 - 220 - 180
(NOTE : Operations should be performed on the whole number, 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.)
220 - 210 - 200
150 - 160 - 140
200 - 180 - 140
90 - 80 - 75
Correct answer
220 - 210 - 200
Select the option figure in which the given figure is embedded as its part (rotation is NOT allowed).
Correct answer
How many triangles are there in the given figure?
11
14
12
13
Correct answer
11
15 is related to 230 following a certain logic. Following the same logic, 4 is related to 21. To which of the following is 12 related following the same logic?
(NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding / subtracting / multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
147
146
149
150
Correct answer
147
What should come in place of the question mark (?) in the given series based on the English alphabetical order
KMO, HJL, EGI, BDF, ?
ZBC
YBC
YAC
ZAC
Correct answer
ZBC
What should come in place of the question mark (?) in the given series based on the English alphabetical order ?
MAT MET MIT MOT ?
MNT
MXT
MVT
MUT
Correct answer
MNT
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
LXC, OZD, RBE, UDF, ?
ZDI
XHJ
YGH
XFG
Correct answer
ZDI
What is the SI unit of force?
Volt
Joule
Newton
Watt
Correct answer
Volt
The government of which of the following states launched the ‘Nand Baba Milk Mission’ scheme in June 2023 ?
Bihar
Madhya Pradesh
Himachal Pradesh
Uttar Pradesh
Correct answer
Bihar
When was Swami Vivekananda born?
12 January 1859
12 January 1863
12 January 1866
12 January 1853
Correct answer
12 January 1859
The National Defense Fund is governed by an Executive Committee, which is chaired by the:
President
Prime Minister
Vice President
Defence Minister
Correct answer
President
The total number of bishops in a chess game is _____.
one
two
three
four
Correct answer
one
Which of the following is the correct option for using 'justify' alignment to a paragraph in a document?
Aligns text only to the left
Aligns text only to the right
Aligns text to both left and right edges
Align text in the center
Correct answer
Aligns text only to the left
Arachnids belong to which subphylum of the phylum Arthropoda?
Chelicerata
Myriapoda
Hexapoda
Crustacea
Correct answer
Chelicerata
During which years did Khalji dynasty ruled over Delhi?
1451 - 1526
1290 - 1320
1414 - 1451
1320 - 1414
Correct answer
1451 - 1526
It is a fact that if you drink from a plastic bottle and throw it in the dustbin, it will still be there when your grandchildren are old. What is the reason behind this?
Plastics are biodegradable.
Plastics are radioactive.
Plastics are non - biodegradable.
Plastics are heavy metals.
Correct answer
Plastics are biodegradable.
What is the primary focus of the ASPIRE scheme of the Ministry of Micro, Small & Medium Enterprises, Government of India?
Urban development
Technology innovation
Environmental conservation
Establishment of livelihoods business incubation centres
Correct answer
Urban development
You grew a small plant in a planter. On maturity, you observed that the plant has green stem, very few branches and the stem is so soft that you could easily break it with your hands. Under which category will you put this plant?
Tree
Creeper
Shrub
Herb
Correct answer
Tree
The valency of Ca is 2+ . The valency of O is 2− . What is the simplified chemical formula of Calcium oxide?
Ca2O2
CaO
CaO2
Ca2O
Correct answer
Ca2O2
Who introduced the Anusandhan National Research Foundation Bill, 2023, in the Lok Sabha?
Dr. Jitender Singh
Gopal Rai
Imran Hussain
Piyush Goyal
Correct answer
Dr. Jitender Singh
Who among the following musicians received the Padma Bhushan Award 2022 for his contributions in the field of art?
Manilal Nag
Madan Singh Chauhan
Rashid Khan
Chhannulal Mishra
Correct answer
Manilal Nag
Name the scheme launched by the Prime Minister on 17 September 2023 that aims to improve the lives of artisans.
PM Vishwakarma
PM Shilpgram
PM Anantakalpaaya
PM Kalashi
Correct answer
PM Vishwakarma
Which Chief Justice of India was sworn in as the acting President of India on 20th July 1969 ?
Justice Harilal Jekisundas Kania
Justice M Patanjali Sastri
Justice Sudhi Ranjan Das
Justice Mohammad Hidayatullah
Correct answer
Justice Harilal Jekisundas Kania
Which of the following values is subtracted from the numerical value of temperature expressed in Kelvin to obtain the temperature in degrees Celsius ?
253
273
293
313
Correct answer
253
Which of the following is a heart - related disease?
Goiter
Diabetes
Angina
Acromegaly
Correct answer
Goiter
How do estuaries serve as critical habitats for various species?
Estuaries have no ecological significance.
Estuaries provide breeding grounds and nurseries for marine organisms.
Estuaries contribute to desertification.
Estuaries are only important for recreational activities.
Correct answer
Estuaries have no ecological significance.
Which of the following places receives rainfall from the Bay of Bengal branch of southwest monsoon?
Surat
Panaji
Kolkata
Ratnagiri
Correct answer
Surat
Olympic medalist Vijender Singh belongs to which State of India?
Punjab
Delhi
Haryana
Maharashtra
Correct answer
Punjab
Private income minus tax payment minus non - tax payment will give us the estimate for ______.
private income
gross income
personal disposable income
national income
Correct answer
private income
Identify the INCORRECT pair (railway zone and headquarters) from the following.
South - East Central Railway Zone – Bilaspur
North Western Railway Zone – Jaipur
South Western Railway Zone – Hubli
Central Railway Zone – Kolkata
Correct answer
South - East Central Railway Zone – Bilaspur
Who was the leader of the temple entry movement in 1930 at Kalaram temple, Nashik?
Swami Achhutanand
NG Ranga
Mahatma Gandhi
Dr. BR Ambedkar
Correct answer
Swami Achhutanand
Which of the following Ministers introduced the Central Goods and Services Tax (Amendment) Bill 2023 and the Integrated Goods and Services Tax (Amendment) Bill 2023 in the Lok Sabha?
Nirmala Sitharaman
Harpal Singh
Bikram Keshari Arukha
Manohar Lal Khattar
Correct answer
Nirmala Sitharaman
Narmada Bachao Andolan (Save Narmada Movement) is a/an ______.
project of Jal Shakti Ministry
government initiative
forest conservation movement
Social movement
Correct answer
project of Jal Shakti Ministry
Match the following states with their percentage urban population in India, as per Census 2011.
| i) | Kerala | a) | 10.04% |
|---|---|---|---|
| ii) | Madhya Pradesh | b) | 47.72% |
| iii) | Tamil Nadu | c) | 27.63% |
| iv) | Himachal Pradesh | d) | 48.45% |
i) - d, ii) - c, iii) - b, iv) - a
i) - a, ii) - d, iii) - c, iv) - b
i) - a, ii) - b, iii) - c, iv) - d
i) - b, ii) - c, iii) - d, iv) - a
Correct answer
i) - d, ii) - c, iii) - b, iv) - a
What is the primary function of the Golgi apparatus?
Lipid production
Sorting and packaging of cellular products
Protein synthesis
Cellular respiration
Correct answer
Lipid production
Who was elected as the 16th Speaker of the Himachal Pradesh Legislative Assembly in January 2023?
Suresh Bhardwaj
Jai Ram Thakur
Kuldeep Singh Pathania
Anurag Thakur
Correct answer
Suresh Bhardwaj
Which of the following sentences is/are correct?
i. According to the Census of India 2011, the total population of India is 141 crores.
ii. Between 1911 and 1921, there was a negative rate of growth of India’s population.
iii. Between 1901 and 1951, the average annual growth of India’s population did not exceed 1.33%.
Only i and ii
Only i and iii
Only i
Only ii and iii
Correct answer
Only i and ii
Which of the following articles of the Constitution of India provides measures to ensure the enforcement of Fundamental Rights?
Article 19
Article 32
Article 29
Article 14
Correct answer
Article 19
Which of the following is a macronutrient?
Vitamins
Carbohydrates
Minerals
Antioxidants
Correct answer
Vitamins
Which organelle contains enzymes for digesting cellular waste and foreign materials?
Nucleus
Mitochondrion
Lysosome
Vacuole
Correct answer
Nucleus
Which are the two major branches of the southwest monsoon in India?
The Himalayan Mountain branch and the Gulf of Mannar branch
The Arabian Sea branch and the Bay of Bengal branch
The Arabian Sea branch and the Tibetan plateau branch
The Tibetan plateau branch and the Bay of Bengal branch
Correct answer
The Himalayan Mountain branch and the Gulf of Mannar branch
To cherish and follow the noble ideals that inspired our national struggle for freedom is a ______ fundamental duty in the list of fundamental duties enshrined in our Indian Constitution.
first
second
third
fourth
Correct answer
first
In plant cells, which organelle is responsible for photosynthesis?
Chloroplast
Mitochondrion
Lysosome
Peroxisome
Correct answer
Chloroplast
Which compound is used to neutralise fatty acids and convert them into salts in a process called saponification?
Sodium fluoride
Sodium acetate
Sodium chlorate
Sodium hydroxide
Correct answer
Sodium fluoride
In 1800, which of the following experimental achievements was made by William Nicholson?
Discovery of water electrolysis
Discovery of thermionic emission
Discovery of low - cost filters for polarizing light
Discovery of electric bulb
Correct answer
Discovery of water electrolysis
Which of the following is/are a gymnosperm?
Fern
Cycas
Mosses
Rose
Correct answer
Fern
The particles that form the main part of the nucleus of an atom are together known as:
isotopes
ions
nucleons
electrons
Correct answer
isotopes
Who said “a cherry that will drop into our mouth one day” about the kingdom of Awadh?
Lord Mountbatten
Lord Dalhousie
Lord Curzon
Lord Lytton
Correct answer
Lord Mountbatten
If an earthquake happens at the sea floor and one tectonic plate dips under the another, this will most probably lead to a natural disaster known as:
Typhoon
Tsunami
Cyclone
Tornado
Correct answer
Typhoon
Which of the following is the shortcut key to create a new paragraph in MS Word?
Ctrl + N
Ctrl + P
Enter
Shift + Enter
Correct answer
Ctrl + N
Which of the following committees was responsible for making recommendations that led to the 42nd Constitutional Amendment for the declaration of Fundamental Duties?
Swaran Singh Committee
Abid Hussain Committee
Khusro Committee
Raja Chelliah Committe
Correct answer
Swaran Singh Committee
The office of the Registrar General and Census Commissioner works under which Ministry of Government of India?
Ministry of Finance
Ministry of Personnel, Public Grievances and Pensions
Ministry of Home Affairs
Ministry of Social Justice and Empowerment
Correct answer
Ministry of Finance
______ is referred to as paper taxes.
Gift tax
Corporation tax
Customs duty
Excise tax
Correct answer
Gift tax
Sange Meel Se Mulaqat is a documentary on the life of _______, directed by Gautam Ghosh.
Pandit Bismillah Khan
Pandit Ram Narayan
Pandit Bhimsen Joshi
Pandit Biswajit Roy Chowdhury
Correct answer
Pandit Bismillah Khan
Which of the following bacterial infections often affects the lungs ?
Meningitis
Influenza
Tuberculosis
Herpes
Correct answer
Meningitis
Name the first Finance Minister of independent India, whose statue was inaugurated by the Union Textiles Minister in Coimbatore .
RK Shanmugam Chetty
CD Deshmukh
TT Krishnamachari
Sachindra Chaudhuri
Correct answer
RK Shanmugam Chetty
Who among the following is the author of the book published in December 2021, ‘The Monk Who Transformed Uttar Pradesh’?
Shashi Tharoor
Shantanu Gupta
Amish Tripathi
Yashika Dutta
Correct answer
Shashi Tharoor
When the compressor and motor operate on the same shaft and are enclosed in a common casing, they are known as ______.
centrifugal compressors
hermetic sealed compressors
axial compressors
reciprocating compressors
Correct answer
centrifugal compressors
The surging phenomenon in a centrifugal compressor occurs when the refrigeration load decreases to below:
65% of the rated capacity
35% of the rated capacity
55% of the rated capacity
45% of the rated capacity
Correct answer
65% of the rated capacity
The given figure shows the p - V diagram of:
aircraft refrigeration system
vapour absorption refrigeration system
Electrolux refrigeration system
vapour compression refrigeration system
Correct answer
aircraft refrigeration system
Which of the following is NOT the application for steam in industry?
De - atomisation
Humidification
Heating
Propulsion
Correct answer
De - atomisation
Which of the following refrigeration lubricants were the first synthetic oils to be used in the refrigeration industry?
Alkylbenzenes oil
Polyol ester oil
Poly alkylene glycol oil
Mineral oil
Correct answer
Alkylbenzenes oil
Variation of power input with speed at constant discharge in case of a centrifugal pump is _______.
cubic
linear
parabolic
logarithmic
Correct answer
cubic
A cantilever beam of length 2 m is subjected to a point load of 3 kN at a distance of 2 m and is subjected to a UDL of 3 kN/m for a total distance of 1.5 m from the fixed end. Calculate the shear force and bending moment at the fixed end.
− 5.75 kN, − 5.545 kN - m
− 10 kN, 15.254 kN - m
− 12.5 kN, − 8.547 kN - m
− 7.5 kN, − 9.375 kN - m
Correct answer
− 5.75 kN, − 5.545 kN - m
In case of a four - stroke diesel engine, the valve timing diagram is expressed in terms of _____.
the time taken for opening and closing of the valve with respect to TDC and BDC
the time taken for opening and closing of the valve with respect to only TDC
the degree of the crank angle at the time of opening and closing of the valve
the linear movement of the piston with respect to TDC and BDC
Correct answer
the time taken for opening and closing of the valve with respect to TDC and BDC
The location of centre of gravity for a sphere of radius (R) from the geometrical centre is at a distance of
0
0.25R
0.5R
R
Correct answer
0
‘No slip condition’ at a fixed surface is applicable to the flow of which type of fluids?
Only ideal fluids
All non - Newtonian fluids
Only Newtonian fluids
All real fluids
Correct answer
Only ideal fluids
The conventional depth of a cut considered in the parting operation using a lathe is ______.
1 mm to 2 mm
20 mm to 25 mm
12 mm to 16 mm
3 mm to 10 mm
Correct answer
1 mm to 2 mm
When a system is undergoing constant volume process, then heat transfer is equal to:
change in entropy
change in enthalpy
work transfer
change in internal energy
Correct answer
change in entropy
When the fluid pressure is measured above the absolute zero pressure, the measured pressure is known as _______ .
gauge pressure
vacuum pressure
atmospheric pressure
absolute pressure
Correct answer
gauge pressure
The process that involves passage of a higher - pressure fluid through a narrow constriction is called:
free expansion process
polytropic process
hyperbolic process
throttling process
Correct answer
free expansion process
What will not happen if the liquid has greater adhesion than cohesion?
Liquid will tend to rise at the point of contact.
Liquid will wet a solid surface.
Liquid surface will be concave downwards in a small diameter tube.
The angle of contact will be less than 90° in a small diameter tube.
Correct answer
Liquid will tend to rise at the point of contact.
In the vapour compression refrigeration cycle with dry saturated vapour after compression, the entropy at the end of compression is the same as the _______.
entropy at the end of expansion
entropy at the end of condensation
entropy at the start of expansion
entropy at the end of evaporation
Correct answer
entropy at the end of expansion
A cooling system is essentially required in internal combustion engines to _______.
remove heat at a faster rate when engine is hot
remove heat at a faster rate when the engine is cool
remove about 70% of heat generated in the combustion chamber
keep the engine very hot or very cool
Correct answer
remove heat at a faster rate when engine is hot
In actual air - conditioning applications, the heat rejection factor depends upon the:
evaporator and condenser temperatures
rate of flow
evaporator temperature
condenser temperature
Correct answer
evaporator and condenser temperatures
Which of the following gas combination is commonly used in oxyfuel - gas welding?
Oxygen and H2
Oxygen and acetylene
Oxygen and Nitrogen
Oxygen and CO2
Correct answer
Oxygen and H2
Which of the following does NOT indicate that the refrigeration plant has to be charged with the refrigerant?
Reduction in the efficiency of the plant
High suction pressure
Short cycling of compressor
Difficult to maintain temperature of rooms and holds
Correct answer
Reduction in the efficiency of the plant
Carbon steel contains a carbon percentage of about 0.21%. The possible type of carbon steel is ________ .
medium carbon steel
alloy steel
mild steel
stainless steel
Correct answer
medium carbon steel
Which of the following is NOT an example of Newtonian fluid?
Kerosene
Water
Printer's ink
Air
Correct answer
Kerosene
Which of the following statements is INCORRECT about the air pre-heater in a steam boiler?
In the tubular type of air pre-heater, hot flue gases flow through the outside of the tubes of the air pre-heater.
In the regenerative type of air pre-heater, heat from flue gases is transferred to air through an intermediate heat storage medium.
Use of the air pre-heater leads to less atmospheric pollution.
In the tubular type of air pre-heater, hot flue gases flow in the direction opposite to that of air travel.
Correct answer
In the tubular type of air pre-heater, hot flue gases flow through the outside of the tubes of the air pre-heater.
Which of the following is NOT a lathe turning operation?
Threading
Sawing
Facing
Grooving
Correct answer
Threading
In a hot working process, metals are deformed _______.
below their recrystallisation temperature
above their recrystallisation temperature
at their recrystallisation temperature
at any recrystallisation temperature
Correct answer
below their recrystallisation temperature
The distance of the centre of pressure from the free surface of the liquid is independent of the:
area exposed to the liquid
density of liquid
depth of the centre of gravity from the free surface
moment of inertia about the centre of gravity
Correct answer
area exposed to the liquid
The function of a halide torch is:
detecting leakage of the refrigerant
superheating the vapour refrigerant
defrosting of the cooling coil
facilitating better lubrication in the refrigerator
Correct answer
detecting leakage of the refrigerant
The manometric head of a centrifugal pump is independent of which of the following factors?
Frictional losses in bearings
Loss of head in impeller and casing
Frictional head loss in delivery pipe
Frictional head loss in suction pipe
Correct answer
Frictional losses in bearings
The fluid that becomes less viscous as it is sheared harder is called _________.
pseudo-plastic fluid
dilatant fluid
thixotropic fluid
Newtonian fluid
Correct answer
pseudo-plastic fluid
The casting process that employs a permanent metal or ceramic mould, is ________.
die casting
centrifugal casting
sand casting
investment casting
Correct answer
die casting
Which of the following is the correct designation of the refrigerant CCl3F?
R 12
R 21
R 11
R 22
Correct answer
R 12
Which of the following is the assumption of Air Standard Cycles?
Heat is assumed to be supplied from chemical reactions during the cycle
Some heat is assumed to be rejected to a constant low temperature sink
The working medium has variable specific heat with varying temperature
The working medium is assumed to be a real gas
Correct answer
Heat is assumed to be supplied from chemical reactions during the cycle
Which of the following is NOT a part of a bucket type steam trap?
Injector
Guide tube
Spiral vane
Float
Correct answer
Injector
In a boiler test, the water supplied to a boiler per hour is 2250 kg. The mass of water in the boiler at the end of the one hour is found to be less than that at commencement by 250 kg. The coal burnt per hour is 250 kg. What will be the actual evaporation per kg of the fuel burnt of the boiler?
10 kg
2500 kg
8 kg
250 kg
Correct answer
10 kg
In the porter governor, the main constituent of controlling force is:
spring force
mass of flyball
friction force
mass of sleeve
Correct answer
spring force
Which of the following claims about the irreversibility of a system is true?
Irreversible processes violate the first law of thermodynamics.
Irreversible processes increase the entropy of the system.
Irreversible processes violate the zeroth law of thermodynamics.
Irreversible processes are always spontaneous
Correct answer
Irreversible processes violate the first law of thermodynamics.
The casting process that employs a wax pattern coated with a ceramic shell to make the mould, is ________.
sand casting
die casting
centrifugal casting
investment casting
Correct answer
sand casting
A complex geometry is placed in the X-Y plane. If the geometry is found to be symmetrical about the Y-axis, then which of the following is correct to calculate the centre of gravity?
Y co-ordinate is zero
Z co-ordinate is a non-zero value
X co-ordinate is zero
X co-ordinate is a non-zero value
Correct answer
Y co-ordinate is zero
Total gradient line (or total energy line) is parallel to hydraulic gradient line with a vertical distance of _________. (The symbols have their usual meanings.)
\(\left(\frac{\mathrm{p}}{\mathrm{W}}\right)+\left(\frac{\mathrm{v}^2}{2 \mathrm{~g}}\right)+\mathrm{z}\)
\(\left(\frac{\mathrm{p}}{\mathrm{W}}\right)+\mathrm{z}\)
\(\frac{v^2}{2 g}\)
\(\frac{\mathrm{p}}{\mathrm{w}}\)
Correct answer
\(\left(\frac{\mathrm{p}}{\mathrm{W}}\right)+\left(\frac{\mathrm{v}^2}{2 \mathrm{~g}}\right)+\mathrm{z}\)
Which of the following assertions related to drilling is true?
Drilling is a process that uses a rotating tool to make a hole in a workpiece.
Drilling is a process that uses a non-rotating tool to make a hole in a workpiece.
Drilling is a process that uses a saw to make a hole in a workpiece.
Drilling is a process that uses a hammer to make a hole in a workpiece.
Correct answer
Drilling is a process that uses a rotating tool to make a hole in a workpiece.
Which of the following is NOT a type of sawing?
Hack sawing
Straight sawing
Circular sawing
Band sawing
Correct answer
Hack sawing
The distance of centre of pressure from free surface of liquid is independent of:
the density of liquid
the moment of inertia
the surface area
the distance of C.G. from free surface of liquid
Correct answer
the density of liquid
Which of the following evaporators are used for refrigeration units of 2 to 250 TR capacity?
Flooded shell and tube evaporators
Shell and coil evaporators
Plate evaporators
Dry expansion shell and tube evaporators
Correct answer
Flooded shell and tube evaporators
Which of the following machines violates the Kelvin Planck’s statement?
Irreversible heat engine
PMM1
PMM2
Reversible heat engine
Correct answer
Irreversible heat engine
For measurement of dryness fraction of steam, use of a separating calorimeter is suitable _______.
when dryness fraction is greater than 0.95
for any condition of steam
when dryness fraction is greater than 1
when dryness fraction is less than 0.95
Correct answer
when dryness fraction is greater than 0.95
The brake power of an engine can be measured by using a rope brake dynamometer. It is given by the expression: (Where, ‘D’ is diameter of the brake drum; ‘W’ is the weight and ‘S’ is the spring scale reading, ‘N’ Speed in rpm)
πDN (W + S)
πDN (W − S)
DN (W + S)
DN (W − S)
Correct answer
πDN (W + S)
The zeroth law of thermodynamics is based on the concept of _________.
temperature
heat capacity
enthalpy
entropy
Correct answer
temperature
What is the main benefit of double volute casing over single volute casing of a centrifugal pump?
High efficiency
High discharge
Less power requirement
Radial load balancing
Correct answer
High efficiency
The maximum frictional force that comes in play when a body just begins to slide over the surface of another body is called:
limiting friction
dynamic friction
static friction
kinetic friction
Correct answer
limiting friction
Which of the following statements is true about the fuel feed pump used for diesel engines?
When the plunger of the feed pump is lifted upwards, the inlet valve remains open. Therefore, it is not suitable to inject fuel at that time.
The plunger of the fuel feed pump is actuated by the governor.
It is a centrifugal type pump.
It is a spring-loaded, plunger type reciprocating pump.
Correct answer
When the plunger of the feed pump is lifted upwards, the inlet valve remains open. Therefore, it is not suitable to inject fuel at that time.
Which of the following is used to increase the temperature of steam above its saturation temperature?
Superheater
Economiser
Air pre-heater
Steam dryer
Correct answer
Superheater
In which of the following areas is supercharging NOT so important?
Domestic bikes
Racing cars
Engines working at high altitudes
Marine and automotive engines where weight and space are important
Correct answer
Domestic bikes
Which of the following statements is true about quantity governing?
The mixture strength remains the same with variation in the speed of the engine.
This method is mostly preferred for diesel engines.
Due to quantity governing, the engine efficiency is altered.
The compression ratio varies with charge supplied.
Correct answer
The mixture strength remains the same with variation in the speed of the engine.
If N is the speed of the compressor in RPM, then what will be the isentropic power for a double acting compressor? Where W = work required by the compressor.
WN
WN/60
WN/2
2WN/60
Correct answer
WN
Which of the following is correct for Pelton wheel?
Where, α & β = guide blade angle at inlet and outlet, respectively
ϴ & ɸ = vane angle at inlet and outlet, respectively
α =0° and ϴ = 0°
β =0° and ɸ = 0°
α =0° and β = 0°
α =0° and ɸ = 0°
Correct answer
α =0° and ϴ = 0°
In a milling machine, bulky workpieces of irregular shapes are clamped directly on the milling machine table by using ________.
angle plates
swivel vise
T-bolts and clamps
V-blocks
Correct answer
angle plates
Which of the following statements is correct about the location of centre of pressure?
Centre of pressure lies above the centre of gravity of the vertically immersed surface.
Centre of pressure may lie at any location irrespective of the centre of gravity of the vertically immersed surface.
Centre of pressure coincides with the centre of gravity of the vertically immersed surface.
Centre of pressure lies below the centre of gravity of the vertically immersed surface.
Correct answer
Centre of pressure lies above the centre of gravity of the vertically immersed surface.
What will be the power lost in friction assuming uniform pressure theory, when a vertical shaft of 100 mm diameter rotating at 150 r.p.m. rests on a flat end foot step bearing? The coefficient of friction is equal to 0.05 and the shaft carries a vertical load of 15 KN.
39.27 KW
392.7 KW
392.7 W
39.27 W
Correct answer
39.27 KW
For the laminar flow through circular pipes, shear stress distribution across a section is _________ .
logarithmic
cubic
parabolic
linear
Correct answer
logarithmic
Determine the stress induced in the steel bars of reinforced concrete structure, if the modular ratio for steel and concrete is 14.5 and the stress applied on the concrete is 2.5 MPa.
36.25 MPa
24.50 MPa
42.75 MPa
30.25 MPa
Correct answer
36.25 MPa
When pressure is measured above the atmospheric pressure, it is termed as:
vacuum pressure
gauge pressure
stagnation pressure
absolute pressure
Correct answer
vacuum pressure
Which of the following statements best describes the second law of thermodynamics in relation to cyclic heat and work processes?
In a cyclic process, the net heat transfer is always less than the net work done.
In a cyclic process, the net heat transfer is equal to the net work done.
In a cyclic process, the net work output can be equal to, greater than or less than the net heat input, depending on the efficiency of the process.
In a cyclic process, the net heat transfer is always greater than the net work done
Correct answer
In a cyclic process, the net heat transfer is always less than the net work done.
Name the welding defect in which we observe a long and continuous visual separation line between the base metal and the heat affected zone.
Incomplete fusion
Lamellar tearing
Hot cracking
Undercut
Correct answer
Incomplete fusion
Which of the following impellers are best suited to medium sized pumps with a small amount of soft solids?
Semi-open impellers
Semi-closed impellers
Open impellers
Closed impellers
Correct answer
Semi-open impellers
If the power output of a hydraulic turbine is 100 kW and overall efficiency is 50%, then what will be the power supplied at the inlet of the turbine?
150 kW
250 kW
200 kW
50 kW
Correct answer
150 kW
Which of the following is NOT a frequent pattern-making process in manufacturing?
Match plate pattern
Investment pattern
Welding pattern
Sweep pattern
Correct answer
Match plate pattern
What will be the value of the axial thrust on a wheel when there is no blade friction?
Equal to the tangential force on the blade
Minimum
Zero
Maximum
Correct answer
Equal to the tangential force on the blade
In the process of brazing, the filler metal is drawn into the joint by means of ________.
Surface tension
High diffusion
Low viscosity
Capillary action
Correct answer
Surface tension
Which of the following statements is true about an SI engine in comparison to a CI engine?
The compression ratio is comparatively high.
The air-fuel ratio is high.
The cost of running is comparatively low.
The operating speed is very high.
Correct answer
The compression ratio is comparatively high.
The Kaplan turbine is an example of _________ .
mixed-flow turbine
tangential flow turbine
radial flow turbine
axial flow turbine
Correct answer
mixed-flow turbine
Under which of the following conditions does the Francis turbine operate?
Low head and high discharge
Medium head and medium discharge
High head and low discharge
High head and high discharge
Correct answer
Low head and high discharge
Which of the following options is correct about four-stroke engines when compared with two-stroke engines?
The thermodynamic cycle is completed in two strokes of the piston or in one revolution of the crankshaft.
Thermal efficiency is higher.
Light weight and simplicity due to absence of the valve actuating mechanism, with the initial cost of the engine being low
Lower volumetric efficiency due to lesser time taken for mixture intake
Correct answer
The thermodynamic cycle is completed in two strokes of the piston or in one revolution of the crankshaft.
Enthalpy of a system in an open flow is given by h = u + pv, where pv is the _________.
momentum energy
external work
moving boundary work
flow work
Correct answer
momentum energy
In the battery ignition system for SI engines, with increase in the speed, the ________.
sparking voltage remains the same
sparking voltage drops
sparking voltage increases
sparking voltage first increases and then becomes constant
Correct answer
sparking voltage remains the same
The heat rejection in Stirling cycle takes place at:
constant enthalpy
constant temperature
constant volume
constant pressure
Correct answer
constant enthalpy
If a point is to be at the free surface of a liquid open to the atmosphere, where the pressure is the atmospheric pressure Patm, then the gauge pressure at a depth ‘h’ from the free surface becomes:
Pgauge = ρgh
Pgauge = Patm
Pgauge = Patm - ρgh
Pgauge = Patm + ρgh
Correct answer
Pgauge = ρgh
The mist lubrication system is generally used for _____.
four stroke cycle engine
gas engine
two stroke cycle engine
air refrigeration cycle engine
Correct answer
four stroke cycle engine
Which of the following factors is taken into consideration when determining the maximum suction height of a centrifugal pump?
Priming
Manometric efficiency
Cavitation
Mechanical efficiency
Correct answer
Priming
A sample of an ideal gas is compressed isothermally from volume of 4 l to 2 l. If the initial pressure is 2 atm, what is the final pressure?
8 atm
4 atm
2 atm
1 atm
Correct answer
8 atm
Which part of the arc welding element/equipment is consumable?
Electrode
Electrode holder
AC/DC transformer
Electrical cables
Correct answer
Electrode
If there is flow of real fluid at fixed boundary, then no-slip condition:
may or may not occur
depends on the type of flow
occurs
does not occur
Correct answer
may or may not occur
The overall efficiency of the turbine is given by:
overall efficiency = mechanical efficiency / hydraulic efficiency
overall efficiency = mechanical efficiency2 / hydraulic efficiency2
overall efficiency = hydraulic efficiency / mechanical efficiency
overall efficiency = hydraulic efficiency × mechanical efficiency
Correct answer
overall efficiency = mechanical efficiency / hydraulic efficiency
Isochronism in a governor is desirable when _____.
the engine operates at high speeds
one speed is desired under one load
the engine is just getting started
the engine operates at low speeds
Correct answer
the engine operates at high speeds
The mass transfer process in an open system is commonly modelled using the ______ equation.
zeroth law of thermodynamics
mass balance
second law of thermodynamics
third law of thermodynamics
Correct answer
zeroth law of thermodynamics
Which of the following prevents the high-pressure vapour refrigerant from flowing back to the evaporator in rotating blade type rotary compressor?
Check valve
Safety valve
Throttling valve
Pressure valve
Correct answer
Check valve
A cyclic heat engine takes 40 kJ of heat from a 100°C temperature reservoir. If it gives 40 kJ of work, then which of the following statements is correct?
The engine violates the Clausius statement.
The engine violates 1st law of thermodynamics as well as Kelvin Planck’s statement.
The engine violates the 1st law of thermodynamics
The engine violates the Kelvin Planck’s statement
Correct answer
The engine violates the Clausius statement.
Which of the following statements is true about hit and miss governing?
This method of governing requires higher weight of flywheel.
In this method of governing, none of the cycles should be idle throughout the running of engine.
It increases the efficiency of engine.
It is a suitable governing method for heavy IC engines.
Correct answer
This method of governing requires higher weight of flywheel.
Calculate the polar moment of inertia and the maximum torque transmitted by a solid shaft of diameter 100 mm and length 1.0 m. Let the angle of twist be 2° and the modulus of rigidity, G = 80 GPa.
9.817 × 106 mm4, 27.409 kN - m
7.982 × 106 mm4, 31.542 kN - m
10.654 × 106 mm4, 23.525 kN - m
8.675 × 106 mm4, 45.500 kN - m
Correct answer
9.817 × 106 mm4, 27.409 kN - m
The heat transfer during constant pressure heating of a gas in a cylinder containing a sliding piston is equal to _______.
the change in internal energy
zero
the change in enthalpy
the work done by the piston
Correct answer
the change in internal energy
A closed system undergoes a cycle consisting of two processes. Process 1 - 2 is an isothermal expansion whereas Process 2 - 1 is an isentropic compression. According to the first law of thermodynamics, which of the following statements is true for this cycle?
Heat transfer during Process 1 - 2 is zero.
Heat transfer during Process 2 - 1 is zero.
Work done during Process 1 - 2 is zero.
Work done during Process 2 - 1 is zero.
Correct answer
Heat transfer during Process 1 - 2 is zero.
Which of the following statements is INCORRECT about no slip boundary condition?
During no slip condition the fluid velocity at all fluid–solid boundaries is equal to that of the solid boundary.
The no slip condition can be defined for viscous flows.
In case of the no slip boundary condition at a fixed solid boundary, the fluid will have some velocity relative to the boundary.
In case of the no slip boundary condition at a fixed solid boundary, the fluid will have zero velocity.
Correct answer
During no slip condition the fluid velocity at all fluid–solid boundaries is equal to that of the solid boundary.
In which of the following compressors, the top cover is bolted to the compressor housing instead of the welded steel shell?
Open compressor
Axial compressor
Hermetic sealed compressor
Semi-hermetic sealed compressor
Correct answer
Open compressor
For the H-S diagram of a vapour compression refrigeration cycle, the specific enthalpy of the refrigerant coming out from the compressor ________.
may increase or decrease
remains constant
increases
decreases
Correct answer
may increase or decrease
A drill bit of diameter 25 mm has cutting speed of 15.7 m/min. What is the speed of rotation of drill?
200 RPM
500 RPM
400 RPM
314 RPM
Correct answer
200 RPM
Which of the following statements are correct regarding the characteristics of Entropy?
It increases when heat is supplied irrespective of the fact whether temperature changes or not.
It decreases when heat is removed whether temperature changes or not.
It remains unchanged in all adiabatic frictionless processes.
It increases if temperature of heat is lowered without work being done as in a throttling process.
Only 1, 3 and 4
Only 1, 2 and 3
1, 2, 3 and 4
Only 2, 3 and 4
Correct answer
Only 1, 3 and 4
In a Hartnell governor, if a spring of greater stiffness is used, then the governor will be:
more sensitive
insensitive
less sensitive
Isochronous
Correct answer
more sensitive
The volumetric efficiency of a single-stage reciprocating air compressor is the ratio of the:
swept volume to the effective swept volume
displacement of the compressor to the free air delivered
free air delivered to the displacement of the compressor
swept volume to the clearance volume
Correct answer
swept volume to the effective swept volume
The Kelvin-Planck statement of the Second Law states that ________.
it is impossible to convert all the heat absorbed from a single reservoir into work
heat cannot flow spontaneously from a colder body to a hotter body
work can be converted completely into heat
it is possible to convert all the heat absorbed from a single reservoir into work
Correct answer
it is impossible to convert all the heat absorbed from a single reservoir into work
If h1 and h2 are enthalpies at the inlet and the outlet, respectively and C1 and C2 are inlet and outlet velocities, respectively, then which of the following statements is
INCORRECT about the equation \(\left(\frac{c_2{ }^2-c_1{ }^2}{2}=h_1-h_2\right)\) for steam nozzles?
The flow is adiabatic in steam nozzles.
The equation considers frictional losses in the steam nozzle.
The equation is the steady flow energy equation for steam nozzles
There is no mechanical work done by the steam nozzle.
Correct answer
The flow is adiabatic in steam nozzles.
Which of the following is the effect of frictional resistance to the flow of the steam jet over the blade in steam turbines?
There is no effect of frictional resistance to the flow of the steam jet over the blade.
The velocity of flow at the outlet to the moving blade is less than that of flow at the inlet to the moving blade.
The velocity of flow at the outlet to the moving blade is greater than that of flow at the inlet to the moving blade.
The velocity of flow at the outlet to the moving blade is equal to that of flow at the inlet to the moving blade
Correct answer
There is no effect of frictional resistance to the flow of the steam jet over the blade.
200 questions in the full paper