Held in 2020
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.
A clock is rotated in a way that the digit 6 is replaced by 12 and the digit 3 is replaced by 9. In which direction respectively will the hour and the minute hand be at exactly 01:45 hours?
North-East and East
South-East and East
North-East and West
South-West and East
Correct answer
North-East and East
Arrange the following cities in a logical and meaningful order.
3, 5, 1, 4, 2
4, 2, 1, 5, 3
4, 1, 5, 2, 3
3, 1, 5,. 2, 4
Correct answer
3, 5, 1, 4, 2
Select the option that can replace question mark (?) in the following matrix.
\(\begin{array}{*{20}{c}} {51}&{64}&{48}\ {103}&{129}&{97}\ {155}&{194}&? \end{array}\)
244
146
144
148
Correct answer
244
Mehak is standing to the north of Karishma. Kartik is standing to the east of Karishma. Then, in which direction is Kartik standing with respect to Mehak?
North-East
North-West
South-West
South-East
Correct answer
North-East
Select the option in which the given figure is embedded. (Rotation is NOT allowed)
Correct answer
Looking a picture of a girl, Ramesh said, "She is my son's mother's sister - in - law's only daughter". How is the girl is related to ramesh?
Daughter
Sister
Cousin
Niece
Correct answer
Daughter
Read the given statements and conclusion carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
Conclusions:
I. All knives are axes.
II. Some axes are sharp.
Only conclusion II follows
Neither conclusion I nor II follows
Both conclusions I and II follow
Only conclusion I follows
Correct answer
Only conclusion II follows
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:
Conclusions:
I. Some horses are cats.
II. Some cats are lions.
Only conclusion I follows
Both conclusions I and II follow
Only conclusion II follows
Neither conclusion I nor II follows
Correct answer
Only conclusion I follows
Arrange the following medical conditions in a logical and meaningful order.
4, 5, 3, 2, 1
1, 5, 3, 2, 4
4, 5, 2, 3, 1
1, 3, 5, 2, 4
Correct answer
4, 5, 3, 2, 1
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
_ q r _ r p _ p _ p q _ q r _
q, r, q, p, r, q
p, r, q, r, p, q
p, q, r, q, r, p
q, r, p, q, r, p
Correct answer
q, r, q, p, r, q
Looking at a picture of a girl, Samuel said, "She is the daughter of my paternal granfather's only daughter". How is the girl related to Samuel?
Mother
Aunt
Cousin
Sister-in-law
Correct answer
Mother
Select the combination of letters that when sequentially placed in the blanks of the gine letter series will complete the series.
_ _ r _ P Q _ s _ q r _
q, s, p, q, s, r
p, q, s, r, q, s
p, q, s, r, p, s
q, s, q, p, s, r
Correct answer
q, s, p, q, s, r
Select the option in which the two words are related in the same way as are the two words in the given word-pair.
Alphabet : Chapter
Wood : Soil
Honeycomb : Beehive
Water Cannon : Fire
Socket : Electricity
Correct answer
Wood : Soil
Arrange the following words in the order in which they appear in the English dictionary.
3, 4, 1, 5, 2
3, 1, 4, 2, 5
3, 4, 1, 2, 5
4, 3, 1, 5, 2
Correct answer
3, 4, 1, 5, 2
Select the correct combination of mathematical signs that can sequentially replce the '*' signs to balance the given equation.
3 * 6 * 5 * 3 * 5 = 0
+, ×, -, ÷
+, ×, ÷, -
-, +, ×, ÷
+, ÷, -, ×
Correct answer
+, ×, -, ÷
Select the Venn diagram that best illustrates the relationship between the following classes.
Rainbow, Nature, Human
Correct answer
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
PALM : SDOP :: MARE :?
PDUH
RCVG
RDUH
PDHU
Correct answer
PDUH
In a certain code language 'CANDID' is written as 'EFPIKI', How will 'MATURE' be written in the same code language?
OEVYTJ
OEYVUI
OFVZTJ
OFZVTJ
Correct answer
OEVYTJ
Which of the following statements is correct for Quantity A and B?
| Quantity A | Quantity B |
|---|---|
| (- 8) (6) (4) (-9) (-12) | (6) (-4) (6) (2) (-4) |
Quantity A is twice as that of Quantity B
Both are equal
Quantity B is bigger
Quantity A is bigger
Correct answer
Quantity A is twice as that of Quantity B
Select the option that is related to the third term in the same way as the second term is related to the first term.
ALMOND : BMNPOE : PATTERN : ?
QBUUFSO
QBSSFSO
QBUUESO
QAUSFSO
Correct answer
QBUUFSO
In a certain code language, if CAR is coded as 22 and BEGAN is coded as 29, then how will FLOWER be coded in the same language?
76
79
80
97
Correct answer
76
Three different positions of the same dice are shown. Find the number on the face opposite to the face showing number '4'.
6
1
2
5
Correct answer
6
Four boys A, B, C, D and 4 girls M, N, O, P are sitting around a round table facing each other.
i. No 2 boys and girls are sitting together.
ii. M is sitting to the right of B.
iii. O is facing N and is sitting to the left of A.
iv. C is sitting to the right of P.
Which two persons are sitting adjacent to D, to the left and right respectively?
M and N
M and O
O and M
N and M
Correct answer
M and N
Select the option in which the given figure is embedded. (Rotation is NOT allowed)
Correct answer
Select the option that can replace the question mark (?) in the following series.
E, G, J, L, O, ?
P
J
Q
R
Correct answer
P
Select the option that is related to the third term in the same way as the second term is related to the first term.
Chef : Cooking : Doctor : ?
Tablet
Surgery
Nurse
Hospital
Correct answer
Tablet
Select the option in which the two words are related in the same way as are the two words in the given word-pair.
Lost : Found
Upbeat : Cheerful
Shadow : Gloomy
Less : Miserable
Dormant : Active
Correct answer
Upbeat : Cheerful
Select the combination of letters when sequentially placed in the blanks of the given letter series will complete the series.
_ m _ o p _ m n _ p l _ n o _
l, n, l, m, o, p
n, l, o, n, m, p
l, n, l, o, m, p
n, o, l, m, n, o
Correct answer
l, n, l, m, o, p
Select the Venn diagram that best illustreates the relationship between the following classes.
Indian, Football Player, Sports Person
Correct answer
Four number-pairs have been given,out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.
17 : 221
13 : 143
12 : 156
19 : 246
Correct answer
17 : 221
A paper is folded and cut as shown in the following figure. How will it appear when unfolded?
Correct answer
In a certain code language, 'TOGETHER' is coded as '41834932', 'WE' is coded as '53' and 'LIVE' is coded as 0673. What will be the code for 'VERTIGO' in the same language?
7324681
6324731
6234731
7322681
Correct answer
7324681
Identify the number that does NOT belong to the following series.
1, 16, 35, 60, 85, 116
85
116
60
35
Correct answer
85
Bala is 40 years old. Akshay is younger than Bala. Rahul is between Akshay and Anirudh, while Bala is between Akshay and Darpan. If there is a consecutive difference of 4 years between their ages, then what is the age of Rahul?
36 years
32 years
44 years
28 years
Correct answer
36 years
Arrange the following words in a meaningful sequence.
a) Beryllium b) Hydrogen c) Sulphur d) Neon
badc
cabd
bcda
abdc
Correct answer
badc
Select the option that can replace question mark (?) in the following matrix.
| 8 | 10 | 24 |
|---|---|---|
| 18 | 36 | 40 |
| 13 | 23 | ? |
36
14
32
23
Correct answer
36
Select the option that can replace the question mark (?) in the following series.
D, I, P, Y, ?
Z
J
W
I
Correct answer
Z
Select the option in which the two numbers share the same relationship as that sheared by the given number-pair.
256 : 32
13 : 169
169 : 26
144 : 16
96 : 13
Correct answer
13 : 169
Select the correct combination of mathematical signs that can sequentially replace the '*' signs to balance the given equation.
7 * 3 * 5 *15 * 8 = 8
-, +, ×, ÷
+, ÷, ×, -
+, ×, -, ÷
-, ÷, ×, +
Correct answer
-, +, ×, ÷
In the following question, select the related letters from the given alternatives.
BHARAT : CJBTBV :: INDIAN:?
JPDKCO
KOEKBP
JPELBP
JPEKBP
Correct answer
JPDKCO
Thomas, Jack, Harry, Sam, Yash and Jason are sitting equidistant from each other around a round table facing towards the centre. Yash is to the right of Sam. harry is between Thomas and Jack. Jason is between sam and Thomas. Who is sitting in front of Sam?
Sam
Yash
Jason
Harry
Correct answer
Sam
Select the option that is related to the third term in the same way as the second term is related to the first term.
Rome : Italy :: Ankara : ?
South korea
Sudan
Iraq
Turkey
Correct answer
South korea
The position of the first and eighth letters of the word ADMINISTRATION are interchanged. Similarly, the second and ninth letters are interchanged, and so on. Which will be the fourth letter from the right end?
S
T
I
N
Correct answer
S
In a certain code language, 'NEVER LOOK BACK' is written as 'HNPNS AWWB KRZB', How will 'VOCABLE' be written in the same code language?
NPWZRKA
NWZRKAN
PWZRKAN
PWZKRAN
Correct answer
NPWZRKA
Identify the number that does NOT belong to the following series.
15, 16, 34, 105, 424, 2142, 12756
34
105
16
2142
Correct answer
34
Select the correct mirror image of the given figure when the mirror is placed to the right side of the figure.
Correct answer
Select the option that is related to the third letter - cluster in the same way as the second letter-cluster is related to the first letter-cluster.
ACCOMMODATE : CAEMOKQBCRC :: APPARENTLY : ?
CNRYTPRCWN
CNRYTCROWN
CNRYTRPNW
CNRYTCPRNW
Correct answer
CNRYTPRCWN
Select the option that can replace the question mark (?) in the following series.
\(\frac{1}{196}, \frac{1}{14},?, 14\)
1
2/3
1/7
1/2
Correct answer
1
Select the option in which the given figure is embedded. (Rotation is NOT allowed)
Correct answer
Select the option that is related to the third term is the same way as the second term is related to the first term.
Cheetah : Fast :: Turtle :?
Hard
Fast
Slow
Tired
Correct answer
Hard
Which of the following is INCORRECT about the modern periodic table?
Modern periodic table has 15 columns
From left to right a period, each element has one more proton than the element before it
Columns of the modern table are called groups
Rows of the modern periodic table are called periods
Correct answer
Modern periodic table has 15 columns
Which of the following is NOT a Maharatna company?
Steel Authority of Indi Limited
Hindustan Copper Limited
Oil & Natural Gas Corporation Limited
Bharat Heavy Electricals Limited
Correct answer
Steel Authority of Indi Limited
Tata steel Tour Championship 2019 is related to:
Tennis
Golf
Hockey
Badminton
Correct answer
Tennis
The Central Industrial Security Force (CISF) is observing 2020 as the Year of:
Mobility
Plant Health
Connectivity
Prosperity
Correct answer
Mobility
Who was the President of India when Emergency was imposed in India for the third time in 1975?
Giani Zail Singh
Basappa Dasappa Jatti
Fakhruddin Ali Ahmed
Zakir Husain Khan
Correct answer
Giani Zail Singh
Which of the following is NOT present in chlorophyll?
Magnesium
Nitrogen
Potassium
Carbon
Correct answer
Magnesium
For which state did the Asian Development Bank (ADB) and the Government of India in 2019 sign a $206 million loan to develop water supply and sewerage infrastructure$?
Maharashtra
Karnataka
Tamil Nadu
Rajasthan
Correct answer
Maharashtra
Which of the following is used as a bio - indicator of air pollution?
Gern
Cycas
Pdeudomonas
Lichens
Correct answer
Gern
Which of the following is NOT a variety of rice?
Birsa Dhan - 105
Karjat - 2
Poovan
Ratnagiri - 3
Correct answer
Birsa Dhan - 105
Which of the following states has proposed a law named Disha Bill, 2019?
Maharashtra
Andhra Pradesh
Karnataka
Gujarat
Correct answer
Maharashtra
Which of the following pairs is NOT correctly matched?
Article 114 - Appropriation Bill
Article 79 - Supreme Court
Article 280 - Finance Commission
Article 312 - All India Services
Correct answer
Article 114 - Appropriation Bill
Who among the following is related to the Chittagong Armoury Raid?
Ashfaqulla Khan
VD Savarkar
Aurobindo Ghosh
Kalpana Datta
Correct answer
Ashfaqulla Khan
Which Indian products are issued with eco - mark?
Products which are cost effective
Products which are not biodegrdable
Products which are environment - friendly
Products which are free of adulteration
Correct answer
Products which are cost effective
Which of the following bodies is NOT mentioned in the constitution?
National Human Rights Commission
National Commission for Scheduled Tribes
Finance Commission
Union Public Service Commission
Correct answer
National Human Rights Commission
The incident on 4 February, 1922, at Chauri Chaura was the main cause for the withdrawal of:
Non - Cooperation Movement
Rowlatt Satyagraha
Cvil Disobedience Movement
Quit India Movement
Correct answer
Non - Cooperation Movement
Choose the INCORRECT match with respect to newspaper and its corresponding editor:
Comrade - Bal Gangadhar Tilak
Bande Mataram - Aurobindo Ghosh
Sandhya - Brahmabandhav Upadhyay
New India - Bipin Chandra Pal
Correct answer
Comrade - Bal Gangadhar Tilak
Who has the shortest tenure as a Chief Minister?
Om Prakash Chautala
Devendra Fadnavis
BD Yeddyurappa
Harish Rawat
Correct answer
Om Prakash Chautala
Which of the following parasites is the cause of the guinea worm disease?
Dracunculus medinensis
Lymphatic filariasis
Strongloides stercoralis
Gnathostomaiasis
Correct answer
Dracunculus medinensis
Choose the INCORRECT pair with respect to wetland and their location?
Ropar Lake - Punjab
Sambhar Lake - Rajasthan
Deepor Beel - Assam
Harike Lake - Kerala
Correct answer
Ropar Lake - Punjab
Where was the 11th BRICS conference held on 13th - 14th November, 2019?
Paris
Delhi
Moscow
Brasilia
Correct answer
Paris
Which animal has the scientific name Pterois volitans?
Cuttlefish
Red Lionfish
Starfish
Devilfish
Correct answer
Cuttlefish
Which of the following is the SI unit of pressure?
Parsec
Lumen
Candela
Pascal
Correct answer
Parsec
Choose the INCORRECT statement with respect to soils of India.
The red soil colour is caused by aluminium compounds
Regur soil is most suitable for the cultivation of cotton
Black soil is also called Regur soil
Laterite soil is prone to intensive leaching due to rain
Correct answer
The red soil colour is caused by aluminium compounds
Who discovered the first antibiotic 'Penicillin'?
James Watson
Alexander Fleming
Francis Crick
Henry Moseley
Correct answer
James Watson
Which of the following is NOT a hormone secreted by islets of Langerhans?
Somatostatin
Glucocorticoids
Glucagon
Insulin
Correct answer
Somatostatin
Cuttlefish belongs to phylum ________.
Echinodermata
Mollusca
Annelida
Pisces
Correct answer
Echinodermata
Who won the 26th Annual Crystal for spreading awareness about the importance of mental health?
Dia Mirza
Priyanka Chopra
Akshay Kumar
Deepika Padukone
Correct answer
Dia Mirza
On the basis of the recommendation of which commission/committee was the state of Haryana formed?
Dhar Committee
Fazal Ali Committee
JVP Committee
Sardar Hukam Singh Parliamentary Committee
Correct answer
Dhar Committee
Water gas is a mixture of:
carbon monoxide and hydrogen
carbon dioxide and methane
carbon dioxide and hydrogen
carbon monoxide and nitrogen
Correct answer
carbon monoxide and hydrogen
Saline soils are also known as:
Bhangar soils
Usara soils
Cotton soils
Regur soils
Correct answer
Bhangar soils
Which Inert gas is used in cancer treatment?
Krypton
Radon
Helium
Argon
Correct answer
Krypton
Who launched Surakshit Matritva Aashwasan scheme on 10 October 2019?
Narendra Modi
Amit Shah
Smriti Irani
Dr. Harsh Vardhan
Correct answer
Narendra Modi
What does 'P' stand for in HTTPS, an expression commonly found in web addresses?
Processor
Plotter
Protocol
Point
Correct answer
Processor
Which of the following nitrogen base is NOT related to DNA?
Thymine
Uracil
Adenine
Guanine
Correct answer
Thymine
The first human heart transplant was done by:
Christiaan Barnard
Frederick Gowland Hopkins
William Harvey
Leeuwenhoek
Correct answer
Christiaan Barnard
Which of the following is NOT correct about Toluene?
It is used for the production of Saccharin
It is used for the production of trinitroluene (TNT)
It is also known as Toluol.
It was first obtained from Aniline.
Correct answer
It is used for the production of Saccharin
What is the base of the hexadecimal number system?
10
8
16
2
Correct answer
10
The union territory of Puducherry shares boundaries with:
Karnataka and Andhra Pradesh
Andhra Pradesh,Kerala and Tamil Nadu
Tamil Nadu
Karnataka, Kerala and Tamil Nadu
Correct answer
Karnataka and Andhra Pradesh
Choose the correct statement:
Desert National Park is located in Rajasthan
Gir National Park is located in Maharashtra
Manad National Park is located in Madhya Pradesh
Khangchendzonga National Park is located in Arunachal Pradesh
Correct answer
Desert National Park is located in Rajasthan
Heat generated in a resistive wire is:
proportional to the square of the time of current flow
proportional to the square of the current flowing in the wire
proportional to the square of the resistance of the wire
proportional to the cube of the resistance of the wire
Correct answer
proportional to the square of the time of current flow
Salem Steel Plant is located in:
Tamil Nadu
Odisha
Maharashtra
Jharkhand
Correct answer
Tamil Nadu
Muhammad Bin Tughlaq changed his capital from Delhi to:
Lahore
Munger
Agra
Daulatabad
Correct answer
Lahore
Choose the correct option with respect to the Round Table conference held in the 1930s.
MK Gandhi took part in the third Round Table conference
Lord Reading was the Viceroy when the first Round Table Conference was held
The Congress participated in all three conferences
Dr. BR Ambedkar participated in all three conferences
Correct answer
MK Gandhi took part in the third Round Table conference
Where was the Military Literature Festival 2019 held?
Gurugram
Chandigarh
Delhi
Faridabad
Correct answer
Gurugram
Under the Pradhan Mantri Shram Yogi Mandhan scheme, the minimum monthly pension for each subscriber is:
Rs. 2,000
Rs. 4,000
Rs. 3,000
Rs. 5,000
Correct answer
Rs. 2,000
Which start up has become the first Indian start up to win the 'Space Oscars' award presented by the European Space Agency?
Hashable
iRobot
Cloudsnap
Blue Sky Analytics
Correct answer
Hashable
What causes Minamata disease?
Deficiency of vitamin D
Mercury poisoning
Viral infection
Deformed gene
Correct answer
Deficiency of vitamin D
Which of the following is NOT correctly matched about bone conditions?
Fracture - Broken bones of various types
Multiple myeloma - Cancer of the plasma cells in bone marrow
Rickets - A child's growing bones fail to develop due to a lack of vitamin D
Osteoporosis - Infection of the bone
Correct answer
Fracture - Broken bones of various types
Where was the junior National Equestrian Championship 2019 held?
Delhi
Pune
Chandigarh
Bengaluru
Correct answer
Delhi
Single-stage piston compressors are used to compress air up to pressure of approximately ____ bar.
5
100
150
50
Correct answer
5
Which of the following is antifriction bearing?
Needle bearing
Pedestal bearing
Collar bearing
Hydrostatic bearing
Correct answer
Needle bearing
What is the use of a Hermetic sealed compressor?
It is used in domestic refrigerators to prevent leakages of refrigerant.
It is used in aircraft engines to supply air to the cabin
It is used to supply air at constant low volume in high pressure applications such as in industrial operation.
It is used to supply air at low pressure in high volume applications such as air curtains
Correct answer
It is used in domestic refrigerators to prevent leakages of refrigerant.
If the back pressure is low enough and the throat is sonic, the Mach number is more than 1 in a/an _____ section during flow in a convergent-divergent nozzle.
entry
converging
throat
diverging
Correct answer
entry
Intake filters are provided in compressors primarily to _____ from the suction air.
remove dirt and moisture
remove dirt and regulate the temperature
remove dirt as well as reduce the pressure
remove only dirt
Correct answer
remove dirt and moisture
While running through a bend a bicycle remains stable due to _____
gyroscopic action
curvature action
centrifugal action
reaction action
Correct answer
gyroscopic action
The coefficient of discharge for venturimeter (Cd) ranges from _______
0.50 – 0.55
0.61 – 0.65
0.61 – 0.69
0.95 – 0.99
Correct answer
0.50 – 0.55
The _____ part of the vapor compression cycle produces a refrigeration effect.
evaporator
condenser
compressor
throttle valve
Correct answer
evaporator
For a pure substance at its triple point, the number of degrees of freedom is
0
1
2
None of these
Correct answer
0
The triple point of water is at _________ mm of Hg
2.58
3.28
3.35
4.58
Correct answer
2.58
The process of cooling the refrigerant in vapour compression refrigeration system, known as sub-cooling, is done before:
evaporation
compression
throttling
condensation
Correct answer
evaporation
______ CANNOT be counted as boiler mounting.
Blow-off cock
Feed water pump
Fusible plug
Stop valve
Correct answer
Blow-off cock
Viscosity of an ideal fluid is always ___________.
Infinity
Zero
Positive
Negative
Correct answer
Infinity
In a Li-Br water absorption cycle _____ is used as a refrigerant.
water
air
ammonia
lithium-bromide
Correct answer
water
U type of configuration is possible in _____ for pressure measurement.
Manometer
Pirani gauge
Orifice meter
Bourdon tube
Correct answer
Manometer
_____ boiler involves the circulation of water by natural convection.
Babcock-Wilcox
Benson
Velox
LaMont
Correct answer
Babcock-Wilcox
______ is the presentation of the anti-knock value of diesel fuel.
Cetane number
Diesel constant
Octane number
Fuel number
Correct answer
Cetane number
Specific energy is _____ at critical depth for a given discharge in a channel.
zero
minimum
maximum
unpredictable
Correct answer
zero
In a steam nozzle, heat supplied to steam during the expansion process equals
zero
change in kinetic energy
work done
heat drop
Correct answer
zero
Density of an ideal fluid is always _____
constant
zero
decreasing
increasing
Correct answer
constant
In a vapour absorption refrigeration, heat is rejected in
Generator only
Condenser only
Condenser and absorber
Absorber only
Correct answer
Generator only
__________ technique uses wear particles analysis using lubricating oil for predicting the impeding failures of machine components.
Waveform analysis
Ferrography
Envelope analysis
Spectrography
Correct answer
Waveform analysis
In Rankine cycle expansion of steam assumed to be
Adiabatic
Polytropic
Isentropic
Isothermal
Correct answer
Adiabatic
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called
pressure ratio
pressure coefficient
degree of reaction
slip factor
Correct answer
pressure ratio
A two-stroke cycle engine ____ as compared to a four-stroke cycle engine of the same size.
has greater thermal efficiency
has greater volumetric efficiency
produces more power
has less wear and tear of moving parts
Correct answer
has greater thermal efficiency
In _____ process, the cross-section of the bar is increased at the cost of reducing its length.
Drawing down
Spinning
Upsetting
Reaming
Correct answer
Drawing down
In a Centrifugal Pump, the liquid enters the pump
At the centre
From the sides
At the top
At the bottom
Correct answer
At the centre
When fluid is flowing through a duct, the local velocity at a point can be measured by a ____.
pitot-static tube
vane anemometer
flow nozzle
current meter
Correct answer
pitot-static tube
Which of the following statements about a principal plane is true?
It has no normal stress.
It has maximum shear stress.
No shear stress is present.
Shear stress can have any value
Correct answer
It has no normal stress.
Which of the following factors does NOT affect the buckling load?
Modulus of Elasticity
Slenderness ratio
Area of cross-section
Area moment of inertia
Correct answer
Modulus of Elasticity
A centrifugal pump is started with its delivery valve kept
Fully open
Fully closed
Partially open
50% open
Correct answer
Fully open
The refrigerant reaches its highest temperature when the vapour leaves the _________ in a refrigeration system based on vapour compression.
condenser
compressor
evaporator
throttle valve
Correct answer
condenser
Due to the turbidity of the water in the boiler feedwater, _____ is caused.
sludge
embrittlement
corrosion
cracking
Correct answer
sludge
In hydraulic coupling, slip is around _________ for mentors having low to moderate locked rotor torque.
12 - 15%
2 - 3%
8 - 10%
6 - 7%
Correct answer
12 - 15%
An orifice meter, having an orifice of diameter ‘d’ is fitted in a pipe of diameter D. For this orifice meter, what is the coefficient of discharge Cd?
A function of Reynolds number only
A function of d/D only
A function of d/D and Reynolds number
Independent of d/D and Reynolds number
Correct answer
A function of Reynolds number only
Flooding of a river is an example of __________ flow.
steady and uniform
unsteady and uniform
steady and non-uniform
unsteady and non-uniform
Correct answer
steady and uniform
Which of the following cycles incorporates two isothermal processes?
Dual cycle
Carnot cycle
Otto cycle
Diesel cycle
Correct answer
Dual cycle
Multi-stage centrifugal pumps are used to:
give high discharge
produce high heads
pump viscous fluids
all of these
Correct answer
give high discharge
_________ involves the breaking of fuel into fine particles.
Fine atomization of fuel
Air supply at increased pressure
Mixing of fuel and air
Excess supply of air
Correct answer
Fine atomization of fuel
The phase where any substance loses the distinction between liquid and vapor is called _____.
Crystal point
Ignition point
Critical point
Dew point
Correct answer
Crystal point
Over a flat plate, thickness of turbulent boundary layer at a distance x from leading edge is _____.
x4/5
x2/5
x5/4
x3/4
Correct answer
x4/5
_________ boiler is capable of generating a small quantity of steam per unit time at high pressure.
Babcock-Wilcox
Scottish marine
Locomotive
Lancashire
Correct answer
Babcock-Wilcox
Oil spreads on the surface of water because _____
oil is lighter than water
oil is heavier than water
oil has low vapour pressure
of surface tension effect
Correct answer
oil is lighter than water
If suction, compression, and delivery of the air take place on one side of the piston only then the compressor is known as:
multistage
single acting
single stage
double acting
Correct answer
multistage
During throttling, which thermodynamic property does not change?
Entropy
Enthalpy
Internal energy
Pressure
Correct answer
Entropy
The anti-knock value of a gasoline engine is defined in terms of a/an _____
Octane number
Knock number
Crook number
Cetane number
Correct answer
Octane number
______ process is NOT involved in Rankine cycle.
Isentropic compression
Constant volume heat addition
Constant pressure heat addition
Isentropic expansion
Correct answer
Isentropic compression
Isolated system indicates
Mass of substance cross the boundary
Energy of substance cross the boundary
Both mass and energy of substance cross the boundary
Both mass and energy of substance does not cross the boundary
Correct answer
Mass of substance cross the boundary
_____ use(s) air refrigeration cycle.
Cryogenic chambers
Aircraft air-conditioning system
Gas chambers
Commercial refrigeration
Correct answer
Cryogenic chambers
Identify the positive displacement type of flow meter from the following.
Constant area variable head
Oval gear type
Constant head variable area
Variable area variable head
Correct answer
Constant area variable head
_____ boiler has unique characteristic of NOT having a steam separating drum.
Benson
LaMont
Velox
Loeffler
Correct answer
Benson
Which of the following is NOT a type of safety valve used for boilers?
Sliding type
Spring type
Lever type
Dead-weight type
Correct answer
Sliding type
The stretching tendency of liquid surfaces is known as _____.
Cohesion
Adhesion
Surface tension
Cavitation
Correct answer
Cohesion
Mitre gears are generally used for _____
minimum axial thrust
change in direction without effecting speed
minimum backlash
speed reduction
Correct answer
minimum axial thrust
Inside a boiler surface, scales are formed due to the presence of ____ in the boiler feedwater.
insoluble compounds
Ca and Mg salts
oils
dissolved gases
Correct answer
insoluble compounds
The pressure-volume diagram of an ideal reciprocating air compressor consists of ____ isobaric, _____ adiabatic and _____ constant volume processes.
two, one, one
one, two, two
one, two, one
two, two, zero
Correct answer
two, one, one
In a laminar flow, _____ can be applied.
Snell’s law
Fresnel law
Newton’s law of viscosity
Grashoff’s law
Correct answer
Snell’s law
Which of the following forces does NOT act on fluid which is at rest?
Viscous
Hydrostatic
Gravity
Surface tension
Correct answer
Viscous
A fan is provided in the water cooling system to
Draw the air through the radiator.
Provide drive to the water pump.
Cool the engine by blowing air over it.
Increase flow of coolant.
Correct answer
Draw the air through the radiator.
Which of the following devices is NOT used to measure the flow rate of velocity of fluid?
Current and turbine meter
Piezometer
Wire anemometer
Pitot tube
Correct answer
Current and turbine meter
The percentage of carbon in bituminous coal is of the order of
20 – 40%
30 – 50%
50 – 60%
60 – 85%
Correct answer
20 – 40%
A cycle consisting of two constant volumes and two isothermal processes is known as
Carnot cycle
Diesel cycle
Joule cycle
Stirling cycle
Correct answer
Carnot cycle
An increase in the efficiency of the Rankine cycle can be expected with _____
increase in exhaust pressure
increase in temperature of heat rejection
decrease in exhaust pressure
decrease in temperature of heat addition
Correct answer
increase in exhaust pressure
Which of the following processes reduces the residual stresses within a steel structure?
Hot forming
Cold forming
Heat treatment
Welding
Correct answer
Hot forming
In vapour compression cycle, the refrigerant exists in a superheated vapour state _____.
at the exit of the compressor
after leaving the expansion valve
after leaving the evaporator
after passing through the condenser
Correct answer
at the exit of the compressor
An after-cooler provided in reciprocating compressors performs the function of _____.
reducing temperature of compressed air
removal of moisture from compressed air
removal of impurities from compressed air
reducing the volume of compressed air
Correct answer
reducing temperature of compressed air
When a fluid is at rest, the shear stress is-
Very large
Zero
Undefined
Finite
Correct answer
Very large
The octane rating is a measure of the ability of the _____ to resist detonation during combustion.
piston
air mixture
fuel
cylinder
Correct answer
piston
Which of the following instruments is used for measuring ultra-high vacuum?
McLeod gauge
Bourdon tube
Manometer
Cathode ray oscilloscope
Correct answer
McLeod gauge
Milk, blood, and clay are examples of _____ fluid.
Ideal
Pseudo-plastic
Perfect
Newtonian
Correct answer
Ideal
Which of the following is applied to brittle materials?
Maximum principal stress theory
Maximum principal strain theory
Maximum strain energy theory
Maximum shear stress theory
Correct answer
Maximum principal stress theory
_____ is closely related to working of hydraulic turbines.
Bragg’s law
Newton’s second law
Faraday’s law
Charles’ law
Correct answer
Bragg’s law
The upward force on a body immersed in water, because of the fluid surrounding it, is known as _____
Buoyancy force
Gravitation force
Force of Viscosity
Archimedes’ Force
Correct answer
Buoyancy force
The volumetric flow rate of river waters is measured directly using _____.
vane meter
weirs
ultrasonic flow meters
ultraviolet flow meters
Correct answer
vane meter
________ measures heat loss from a heated wire to measure pressure.
Orifice meter
Manometer
Pirani gauge
Barometer
Correct answer
Orifice meter
The vapour compression refrigerator employs which of the following cycles?
Rankine
Carnot
Reversed Rankine
Reversed Carnot
Correct answer
Rankine
Which of the following processes generally does NOT occur during the heat treatment of steels?
Rework
Recovery
Recrystallisation
Grain growth
Correct answer
Rework
The shear stress at the centre of a circular shaft under torsion is
Maximum
Minimum
Zero
Unpredictable
Correct answer
Maximum
Which of the following cycles is most suitable for steam power plants?
Brayton cycle
Diesel cycle
Otto cycle
Rankine cycle
Correct answer
Brayton cycle
Refrigerant exits as a high-pressure liquid from the _____ in a vapour compression system.
throttle valve
condensor
evaporator
compressor
Correct answer
throttle valve
Bending moment at the supports in case of simply supported beam is:
Positive
Zero
Negative
Depends upon loading
Correct answer
Positive
For a given system, if heat is denoted by ‘Q’ and work is denoted by ‘w’. the cyclic integral of (dQ – dw) for a closed system will be:
positive
negative
zero
unpredictable
Correct answer
positive
Which of the following metals contains chromium as its major alloying element?
Copper
Titanium
Carbon steels
Stainless steel
Correct answer
Copper
While classifying the boilers into fire-tube and water-tube, mark out the odd one out of the option given below.
Cochran boiler
Locomotive boiler
Stirling boiler
Lancashire boiler
Correct answer
Cochran boiler
A car has a four-stroke in-line diesel engine whose compression ratio is 21 : 1 and expansion ratio is 10 : 1. What is the cut-off ratio?
3.2
2.1
210
2.8
Correct answer
3.2
Which type of pump is commonly used nowadays to force water into the boiler?
Centrifugal pump
Duplex pump
Rotary pump
Single-stage reciprocating pump
Correct answer
Centrifugal pump
Cylinder and piston-type flow meters are of _____ type.
variable head
variable area
variable area variable head
positive displacement
Correct answer
variable head
__________ Irreversibility is due to the friction in the system.
Chemical
Rotary
Internal
Frictional
Correct answer
Chemical
Hardness is induced within the gear teeth to avoid _____.
meshing
wear
pitting
abrasion
Correct answer
meshing
The increase in entropy of a system represents ______ of energy.
degradation
upgradation
generation
preservation
Correct answer
degradation
The steam expansion process in a nozzle can be approximated as a/an _____ process.
polytropic
throttling
adiabatic
free expansion
Correct answer
polytropic
For an unsteady operation, and _____ hydraulic transmission through fluid coupling is suitable.
low starting torque
high starting speed
increasing torque
increasing speed
Correct answer
low starting torque
_____ gives an idea about the pressure in a static fluid.
Grashof’s law
Weber’s law
Pascal’s law
Newton’s law
Correct answer
Grashof’s law
Lancashire boiler is a __________ boiler
Single pass
Two pass
Three pass
Four pass
Correct answer
Single pass
_____ property is stated by the first law of thermodynamics.
Temperature
Entropy
Pressure
Internal energy
Correct answer
Temperature
The thermostat comes into operation at temperatures of about _____ in automobile water cooling systems.
40°C
60°C
20°C
80°C
Correct answer
40°C
Which of the following is NOT applicable to fire-tube locomotive boilers?
They are externally fired
They are placed horizontally
They are multi-tubular
They are mobile in nature
Correct answer
They are externally fired
______ occurs when the vapour pressure is more than pressure above a liquid surface at a given temperature.
Freezing
Condensation
Boiling
Gauging
Correct answer
Freezing
______ fluid is incompressible.
Newtonian
Non-Newtonian
Ideal
Real
Correct answer
Newtonian
______ process induces compressive residual stresses on a component to nullify the residual stresses within a steel structure.
Welding
Heat treatment
Brazing
Shot peening
Correct answer
Welding
200 questions in the full paper