Question for CPCL Junior Engineering Assistant 2026 - Quiz / Questions / MCQ

Objective Questions

Latest CPCL JEA Exam Question (Objective Questions), MCQ in English

Subjects : General Knowledge, Verbal Ability, Reasoning/Logical Deduction, Numerical Ability, Mechanical

Question Bank CPCL Junior Engineering Assistant (Mechanical) Exam - English

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General Knowledge

Question 1Single Answer

Yojna a weekly journal

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 2Single Answer

Kurukshetra a journal on rural development is published by

A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission

Question 3Single Answer

Devaluation of a currency means

A
Fixing the value of the currency in conjuction with the movement in the value of a basket of predetermined currencies
B
Reduction in the value of a currency vis-à-vis major internationally traded currencies
C
Fixing the value of currency in multilateral consultaion with the IMF the World Bank and major trading partners
D
Permitting the currency to seek its worth in the international market

Question 4Single Answer

In ruby laser, the stimulated emission is due to transition from

A
metastable state to any lower state
B
any higher state of lower state
C
metastable state to ground state
D
any higher state to ground state

Question 5Single Answer

10^-6 M NaOH is diluted 100 times. The pH of the diluted base is

A
between 7 and 8
B
between 5 and 6
C
between 6 and 7
D
between 10 and 11

Question 6Single Answer

The respiratory quotient during cellular respiration would depend on

A
the nature of enzymes involved
B
the nature of the substrate
C
the amount of carbon dioxide released
D
the amount of oxygen utilised

Question 7Single Answer

Sattriya dance form is famous in which of these states ?

A
Assam
B
Himachal Pradesh
C
Punjab
D
Tamil Nadu

Question 8Single Answer

Which of the following statements is true ?
Statement I: Indian techniques such as Rasa and Bhawa in classical dances have their origins in Bharatmuni's Natyashastra.
Statement II: Bharatanatyam has its origin in Odisha.

A
Only Statement II is true
B
Both Statement I and Statement II are true
C
Neither Statement I nor Statement II is true
D
Only Statement I is true

Question 9Single Answer

"Who said, 'India was a parrot unto itself'?

A
Malik Muhammad Joyce
B
Raskhan
C
Rich Khusrow
D
Rich Hasan

Question 10Single Answer

When was the Constituent Assembly of India formed?

A
1946
B
1947
C
1948
D
1950

Question 11Single Answer

On what date did India celebrate the 9th anniversary of the Goods and Services Tax (GST) implementation?

A
July 1, 2026
B
June 30, 2026
C
July 2, 2026
D
June 29, 2026

Question 12Single Answer

Which global event is India participating in with Sweden as a partner?

A
Venus Orbiter Mission 'Shukrayaan'
B
Chandrayaan-4
C
Gaganyaan crewed mission
D
Mars Orbiter Mission-2

Question 13Single Answer

Who became India's 97th Chess Grandmaster in late June 2026?

A
Gukesh D
B
Praggnanandhaa R
C
Harshavardhan G.B.
D
Arjun Erigaisi

Question 14Single Answer

What major merger was approved by the boards of PFC and REC Limited on June 30, 2026?

A
Merger with SBI
B
Merger into a single power financing entity
C
Merger with NTPC
D
Merger with IREDA

Question 15Single Answer

Which initiative was launched at the Rashtriya Gramin Vikas Sammelan 2026 for rural women SHGs?

A
Lakhpati Didi App
B
Digital India Rural Scheme
C
PM Kisan Drone Yojana
D
SARAS Shakti Collection and Coffee Table Book

Verbal Ability

Question 16Single Answer

I go to Madurai by —– Vaigai Express

A
a
B
an
C
some
D
the

Question 17Single Answer

Have the car stolen!

A
Steal the car
B
You should have the stolen car
C
Get someone to steal the car
D
They have stolen the car

Question 18Single Answer

The payment was collected by the hardworking salesman.

A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.

Question 19Single Answer

I had to stop all my work to complete this project.

A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me

Question 20Single Answer

They have published the names of all the successful candidates.

A
The candidates who have succeeded their names they had published.
B
The names of all the successful candidates have been published by them
C
The candidates who have succeeded their names have been published by them.
D
The names of all the successful candidate were published by them.

Question 21Single Answer

The online shopping site lowered the prices.

A
Lowering of the prices was done by the online shopping site
B
The prices were lowered by the online shopping site
C
The prices had been lowered by the online shopping site
D
The prices have been lowered by the online shopping site

Question 22Single Answer

Who taught you to drive a truck ?

A
To drive a truck by whom were you taught?
B
Driving a truck by who were you taught?
C
Driving a truck by who were you being taught?
D
By whom were you taught to drive a truck?

Question 23Single Answer

Passage :

Direction : Question below has two blanks, each blank indicting that some thing has been omitted. Choose the word for each blank which best fits the meaning of the sentence as a whole.

The Finance Department has ……………a centralized online databank system for all statutory government bodies to …………an eye on their assets and liabilities.

A
presented , stay
B
introduced , keep
C
announce , make
D
created , let
E
proclaimed , hold

Question 24Single Answer

Passage :

Direction : The five items in this section consists of a word or group of words followed by four words as (a), (b), (c) and (d). Select the word which is nearly opposite to the meaning of the original word or group of words and mark your response as (a), (b), (c) and (d), as the case may be, in your Answer Sheet.

Assets

A
liabilities
B
responsibilities
C
estates
D
profits

Question 25Single Answer

Passage :

Direction : In the question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Affidavit

A
Affirmation
B
Slander
C
Oath
D
Testimony

Question 26Single Answer

Passage :

Direction: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Hollow

A
Alveolate
B
Cleft
C
Cavernous
D
Solid

Question 27Single Answer

Passage :

Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Cosset

A
Ignoreb
B
Close
C
Caress
D
Fondle

Question 28Single Answer

Passage :

Directions: In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Ogle

A
Leer
B
Gaze
C
Ignore
D
Gawk

Question 29Single Answer

Passage :

Directions:In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Intrinsic

A
Elemental
B
Innate
C
Connate
D
Acquired

Question 30Single Answer

Passage :

Direction : In the following question, out of the four alternatives, choose the word which is opposite in meaning to the given word and click the button corresponding to it

Coalesce

A
Separate
B
Adhere
C
Cleave
D
Amalgamate

Reasoning/Logical Deduction

Question 31Single Answer

Passage :

Direction: Study the given information carefully and answer the given question
P, Q, R, S, T, V, X and Y are seated in a straight line facing North. P sits fourth to the left of V. V sits either sixth from the left end of the line or fourth from the right end of the line. S sits second to the right of R. R is not an immediate neighbor of V. T and Q are immediate neighbours of each other but neither T not Q sits at extreme ends of the line. Only one person sits between T and X. X does not sit at the extreme end of the line

According to the passage, what is the main purpose of data protection laws ?

A
To ensure that foreign countries invest in research for drugs to treat diseases like TB
B
To attract Indian scientists back to the country
C
To prevent misuse of research to make profit by competing companies
D
To make clinical trials more acceptable to the public
E
None of these

Question 32Single Answer

‘Gram’ is relatd to ‘Mass’ in the same way as ‘Centimetre’ is related to

A
Area
B
Volume
C
Length
D
Sound
E
Energy

Question 33Single Answer

'Mustard' is related to 'Seed' in the same way as 'Carrot' is related to

A
Fruit
B
Stem
C
Flower
D
Root
E
None of these

Question 34Single Answer

Which of the following pairs of words have the same relationship as Fan : Heat?

A
Water : Drink
B
Light : Night
C
Teach : Student
D
Air : Breathe
E
Food : Hunger

Question 35Single Answer

'Radish' is related to 'Root', in the same way as 'Brinjal' is related to

A
Fruit
B
Stem
C
Flower
D
Root
E
None of these

Question 36Single Answer

Passage :

Direction : the sets of numbers in the four alternatives given below, which is the most similar to the given set.

Given Set : (6, 15, 28)

A
(50,59,71)
B
(46, 56, 66)
C
(60, 69, 72)
D
(60, 69, 82)
E
None of these

Question 37Single Answer

Passage :

Direction : the sets of numbers in the four alternatives given below, which is the most similar to the given set.

Given Set : (81, 77, 69)

A
(56, 52, 44)
B
(64, 61, 53)
C
(92, 88, 79)
D
(75, 71, 60)
E
None of these

Question 38Single Answer

Passage :

Direction : The questions consists of a pair of words. Establish the relationship among the given pair and identify the pair that best illustrates a similar relationship from amongst the alternatives

Kick : Football

A
Mop : Sweep
B
Dust : Rage
C
Wash : Dishes
D
Throw : Ring
E
None of these

Question 39Single Answer

Passage :

Rectangle : Pentagon

A
Triangle : Rectangle
B
Diagonal : Perimeter
C
Side : Angle
D
Circle : Square
E
None of the above

Question 40Single Answer

Passage :

Inherit : Acquire

A
Instinct : Habbit
B
Learn : Discover
C
Loss : Gain
D
Hierarchical : Succession
E
None of the above

Numerical Ability

Question 41Single Answer

The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?

A
51:52
B
52:53
C
51:53
D
52:55

Question 42Single Answer

Which of the following numbers is irrational ?

A
√49
B
0.125
C
√2
D
22/7

Question 43Single Answer

356 x 936 – 356 x 836 = ?

A
35600
B
34500
C
9630
D
93600

Question 44Single Answer

Arrange in descending order: 5/8, 7/10, 3/4

A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4

Question 45Single Answer

What is (3^{^}{4} times 9^{^}{2}) ?

A
3⁶
B
3⁸
C
3¹⁰
D
9⁶

Question 46Single Answer

If 3⁴X^-2 = 729, then find the value of X.

Question 47Single Answer

Convert 0.6 into fraction ?

A
3/5
B
2/3
C
4/5

Question 48Single Answer

The no. plate of a bus had peculiarity. The bus number was a perfect square. It was also a perfect square when the plate numbers were reversed. The bus company had only five hundred buses numbered from 1 to 500. What was the number ?

A
169
B
36
C
196
D
Can not say

Question 49Single Answer

If a and b are positive integers, such that ab = 125, then (a-b)^a+b-4= ?

A
16
B
25
C
28
D
30

Question 50Single Answer

If x^*y = x² + y² – xy, then value of 9^*11 is

A
93
B
103
C
60.5
D
121

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Mechanical

Question 51Single Answer

Which of the following is the unit of kinematic viscosity _________________?

A
Pascal
B
Poise
C
Stoke
D
Faraday
E
None of the above

Question 52Single Answer

Consider the following processes:
1. Extension of a spring
2. Plastic deformation of a material
3. Magnetization of a material exhibiting hysteresis
Which of the above process are irreversible?

A
1 and 2 only
B
1 and 3 only
C
1 only
D
1, 2 and 3

Question 53Single Answer

Which of the following statements are correct for a throttling process?
1. It is an adiabatic steady flow process
2. The enthalpy before and after throttling is same
3. In the processes, due to fall in pressure, the fluid velocity at outlet is always more than inlet velocity

A
1 and 2 only
B
1 and 3 only
C
2 and 3 only
D
1, 2 and 3

Question 54Single Answer

A Reversed Carnot Engine removes 50 kW from a heat sink. The temperature of the heat sink is 250 K and the temperature of the heat reservoir is 300 K. The power required of the engine is

A
10 kW
B
20 kW
C
30 kW
D
50 kW

Question 55Single Answer

A heat engine receives heat at the rate of 2500 kJ/min and gives an output of 12.4 kW. Its thermal efficiency is, nearly

A
18%
B
23%
C
26%
D
30%

Question 56Single Answer

Consider the following motions :
1. Piston reciprocating inside an engine cylinder
2. Motion of a shaft between foot-step bearings
Which of the above can rightly be considered as successfully constrained motion?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2

Question 57Single Answer

A rotor weighing 2 kN is supported on bearings A and B which are 1 m apart. The centre of mass of the rotor is at a distance 0.4 m from bearing A. It is observed that there is an unbalanced couple of magnitude 300 N-m which leaves the shaft balanced statically.The dynamic reactions at the supports will be

A
800 N and 800 N
B
300 N and 800 N
C
800 N and – 300 N
D
300 N and – 300 N

Question 58Single Answer

A cam is a mechanical member used to impart a desired motion to a follower by direct contact. Which one of the under-listed follower motion types will produce the least jerk to the system?

A
Simple harmonic
B
Constant acceleration and deceleration
C
Constant velocity
D
Cycloidal

Question 59Single Answer

In a circular are cam with a roller follower, acceleration of the follower depends on
1. cam speed and location of centre of circular arc
2. roller diameter and radius of circular arc
Which of the above is/are correct?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2

Question 60Single Answer

A manufacturing company is selling a product for 15 per unit with variable cost of 10 per unit. The fixed cost of the asset is 50,000. How many units should be produced to breakeven?

A
2000
B
5000
C
8000
D
10000

Question 61Single Answer

A spherical waterdrop of 1 mm in diameter splits up in air into 64 smaller drops of equal size. The surface tension coefficient of water in air is 0.073 N/m. The work required in splitting up the drop is

A
0.96 × 10^–6 J
B
0.69 × 10^–6 J
C
0.32 × 10^–6 J
D
0.23 × 10^–6 J

Question 62Single Answer

Consider the following statements pertaining to stability of floating bodies:
1. A floating body will be stable when the centre of gravity is above the centre of buoyancy.
2. The position of metacentres corresponding to different axes of rotation are generally different for the same floating object.
3. For cargo ships, the metacentric height varies with loading.
Which of the above statements are correct?

A
1, 2 and 3
B
1 and 2 only
C
1 and 3 only
D
2 and 3 only

Question 63Single Answer

Water is coming out from a tap and falls vertically downwards. At the tap opening, the stream diameter is 20 mm with uniform velocity of 2 m/s. Assuming steady inviscid flow, constant pressure atmosphere everywhere, and neglecting curvature and surface tension effects, the diameter of the stream 0.5 m below the tap opening is nearly

A
11.7 mm
B
14.6 mm
C
17.5 mm
D
20.4 mm

Question 64Single Answer

Consider the following statements:
1. At low Reynolds numbers of any flow, viscous forces dominate over inertial forces.
2. Transition from laminar to turbulent flow occurs over a range of Reynolds numbers depending on the surface presented to the flow.
Which of the above statements is/are correct?

A
1 only
B
2 only
C
Both 1 and 2
D
Neither 1 nor 2

Question 65Single Answer

In a steady laminar flow of a given discharge through a circular pipe of diameter D, the head loss is proportional to

A
D^–1
B
D^–2
C
D^–3
D
D^–4

Question 66Single Answer

The centre-line velocity in a pipe flow is 2m/s. What is the average flow velocity in the pipe if the Reynolds number of the flow is 800?

A
2 m/s
B
1.5 m/s
C
1 m/s
D
0.5 m/s

Question 67Single Answer

During a constant pressure expansion of a gas, 33.3% heat is converted into work while the temperature rises by 20 K. The specific heat of the gas at constant pressure as a proportion of work, W is

A
8%
B
10%
C
12%
D
15%

Question 68Single Answer

A system of 100 kg mass undergoes a process in which its specific entropy increases from 0.3 kJ/kg K to 0.4 kJ/kg K. At the same time, the entropy of the surroundings decreases from 80 kJ/kg K to 75 kJ/kg K. The process is

A
reversible and isothermal
B
irreversible
C
reversible only
D
isothermal only

Question 69Single Answer

A reversible heat engine rejects 80% of the heat supplied during a cycle of operation. If the engine is reversed and operates as a refrigerator, then its coefficient of performance shall be

Question 70Single Answer

For the same efficiency of the Brayton cycle and the Carnot cycle working between temperature limits of T_max and T_min, the power contribution of the Brayton cycle will be

A
zero
B
maximum
C
minimum
D
50% of the Carnot cycle

Question 71Single Answer

A fin will be more effective when Bio number is

A
Greater than 1
B
Equal to 1
C
Between 1 and 3
4 4
D
Less than 1

Question 72Single Answer

A tank of length, breadth and height in the ratio of 2:1:2 is full of water. The ratio of hydrostatic force at the bottom to that at any larger vertical surface is

Question 73Single Answer

Which of the following fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate?

A
Newtonian fluid
B
Ideal Bingham plastic fluids
C
Pseudo-plastic fluids
D
Dilatent fluids

Question 74Single Answer

What is the specific gravity of a marble stone, which weighs 400N in air, and 200N in water? (g=10m/s²)

Question 75Single Answer

What is the intensity of pressure in the following SI units, when specific gravity of mercury is 13.6 and the intensity of pressure is 400KPa ?

A
0.3 bar or 4.077m of water or 0.29 mm of Hg
B
4 bar or 5.077m of water or 0.399 mm of Hg
C
0.3 bar or 5.077m of water or 0.599 mm of Hg
D
4 bar or 4.077m of water or 0.299 mm of Hg

Question 76Single Answer

Consider the following statements:
1.If a small upward displacement is given to a floating body, it results in the reduction of the buoyant force acting on the body
2.A slight horizontal displacement does not change either the magnitude or the location of the buoyant force
Which of the above statements is/are correct?

A
Both 1 and 2
B
1 only
C
2 only
D
Neither 1 nor 2

Question 77Single Answer

State whether following flow field is physically possible?

A
Possible for steady, incompressible flow
B
Possible for unsteady, incompressible flow
C
Possible for steady, compressible flow
D
Not Possible

Question 78Single Answer

In a differential manometer, a head of 0.5 m of fluid A in limb 1 is found to balance a head of 0.3 m of fluid B in limb 2. The atmospheric pressure is 760 mm of mercury. The ratio of specific gravities of A to B is

A
0.25
B
0.26
C
2
D
4

Question 79Single Answer

A Reversed Carnot Engine removes 50 kW from a heat sink. The temperature of the heat sink is 250 K and the temperature of the heat reservoir is 300 K. The power required of the engine is

A
10 kW
B
20 kW
C
30 kW
D
50 kW

Question 80Single Answer

On which of the following just in time manufacturing philosophy emphasizes ?

A
man power
B
profit
C
inventory
D
manufacturing

Question 81Single Answer

If a submerged body displaced from its equilibrium position, returns to its original position, it is called __________.

A
thermal equilibrium
B
neutral equilibrium
C
unstable equilibrium
D
stable equilibrium

Question 82Single Answer

In a flow measurement, a venturi meter is preferred over an orifice plate because _____.

A
energy of head loss is less
B
It is cheaper
C
pressure drop is more
D
space is limited

Question 83Single Answer

Pitot tube measures ______.

A
dynamic pressure of a moving stream
B
guage pressure
C
temperature of moving water
D
pressure difference between two fluids

Question 84Single Answer

Which of the following is not a property of an ideal fluid ?

A
flow is irrotational
B
it has no viscosity
C
it has viscosity
D
it is incompressible

Question 85Single Answer

Nozzle used in steam turbines convert ________.

A
enthalpy of steam into work
B
enthalpy of steam into kinetic energy
C
enthalpy of steam into pressure energy
D
pressure energy into work

Question 86Single Answer

Which of the following assumptions is the most relevant in air-standard cycle analysis ?

A
All the processes within the cycle are irreversible
B
Working fluid is a fixed mass
C
Specific heat of air changes during the cycle
D
Cycle is assumed to be an open cycle

Question 87Single Answer

The modern Francis turbine is a ___________flow turbine .

A
tangential
B
axial
C
radial
D
mixed

Question 88Single Answer

Variation of stress with strain rate for a Newtonian fluid is ______ .

A
hyperbolic
B
linear
C
elliptical
D
parabolic

Question 89Single Answer

Which of the following is NOT a part of refrigeration systems ?

A
Turbine
B
Evaporator
C
Compressor
D
Condenser

Question 90Single Answer

Which of the following is NOT an intensive property ?

A
Temperature
B
Total volume
C
Pressure
D
Density

Question 91Single Answer

Which of the following does NOT represent a unit of viscosity ?

A
Stoke
B
Poise
C
m²/sec
D
N-m/sec

Question 92Single Answer

__________ in the fuel is oxidised during knocking .

A
Hydrocarbon
B
Phosphorous
C
Water
D
Coal

Question 93Single Answer

_________ is defined as the ability of a material to resist deformation under action of an external load .

A
Stiffness
B
Resilience
C
Brittleness
D
Toughness

Question 94Single Answer

Draught is produced in locomotive boilers by which of the following components ?

A
Locomotive
B
Steam jet
C
Centrifugal fan
D
Chimney

Question 95Single Answer

For a steady flow, the value of all fluid properties at any fixed point _________ .

A
do not change with location
B
change with time
C
change with location
D
do not change with time

Question 96Single Answer

For a floating body, if the metacentre is below the centre of gravity, then the body is said to be __________ equilibrium .

A
thermal
B
stable
C
unstable
D
neutral

Question 97Single Answer

________ is useful for measuring flow of a conducting fluid .

A
Orifice meter
B
Rotameter
C
Vane meter
D
Electro-magnetic flow meter

Question 98Single Answer

A two- stroke engine consists of ________ port (s)

A
Three
B
Four
C
One
D
Two

Question 99Single Answer

Air Cooling is mostly preferred for _________ .

A
heavy truck
B
buses
C
moto cycles
D
multi-utility vehicles

Question 100Single Answer

_______ valves are provided in reciprocating compressors .

A
Simply supported
B
Solenoid
C
Plate
D
Poppet

Question 101Single Answer

Benson boiler have ______ water drum (s)

A
One
B
Zero
C
Three
D
Two

Question 102Single Answer

_________ is used for pumping water into a boilers .

A
Economiser
B
Duplex pump
C
Feed pump
D
Rotor

Question 103Single Answer

The function of a carburetor in internal combustion engines is :

A
to control fuel alone
B
to cool exhaust gases
C
to maintain air-fuel ratio
D
to control air alone

Question 104Single Answer

The device which transfers energy from the ______ to _____ the is known as hydraulic turbine .

A
atmosphere; fluid
B
rotor; fluid
C
fluid; rotor
D
fluid; atmosphere

Question 105Single Answer

The flash chamber in the single stage VCR cycle serves to ________ .

A
decrease the compression ratio
B
increase the refrigerating effect
C
increase the compression ratio
D
decrease the refrigerating effect

Question 106Single Answer

Define thermodynamics .

A
It is a science which deals with the relation between heat, work and properties of systems
B
It is a science which deals with work done
C
It deals with dynamics under thermal conditions
D
It is science which deals with the relation between work and properties

Question 107Single Answer

Which of the following statements is correct about a Benson boiler ?

A
Air is sent through the same direction
B
There is no recirculation of water
C
Steam is sent out in multiple directions
D
Flue gases pass only in one direction

Question 108Single Answer

Within a refrigeration system, the expansion valve is incorporated between the ________ .

A
Super-heater and sub-cooler
B
compressor and condenser
C
evaporator and compressor
D
condenser and evaporator

Question 109Single Answer

The reversed ______ cycle employed for passenger aircraft systems .

A
Carnot
B
Atkinson
C
Ericsson
D
Brayton

Question 110Single Answer

Fusible plug in a steam boiler is placed ______ .

A
below the water level indicator
B
at he crown of the furnace
C
at the fire grate of the boiler
D
near the manhole

Question 111Single Answer

Aqua ammonia solution used in a vapour absorption refrigeration system is a solution of ammonia in ________ .

A
CF₃
B
LiBr
C
H₂O₂
D
H₂O

Question 112Single Answer

Coated electrodes are used in ______ .

A
gas tungsten arc welding
B
submerged arc welding
C
tungsten insert gas welding
D
shielded metal arc welding

Question 113Single Answer

Where is air cycle refrigeration commonly used ?

A
Domestic refrigerator
B
Cold storage
C
Aircraft conditioning
D
Car air conditioning

Question 114Single Answer

________, is not a water tube boiler .

A
Benson boiler
B
Babcock-Wilcox boiler
C
Stirling boiler
D
Scotch marine

Question 115Single Answer

Stoke is another unit of -

A
kinematic viscosityy
B
velocity gradient
C
Shear stress
D
dynamic viscosit

Question 116Single Answer

For a refrigerating machine, capacity is expressed as ______ .

A
the lowest temperature attained
B
inside volume of the cabinet
C
gross weight of the machine
D
rate of heat extraction from the space being cooled

Question 117Single Answer

The value of quality or dryness fraction of a substance in saturated liquid-vapor mixture is ________ .

A
1
B
2
C
Zero
D
between Zero and 1

Question 118Single Answer

Uniform flow is the type of flow where in velocity at any given time ________- with respect to space .

A
Decreases
B
Does not change
C
Increases
D
Changes

Question 119Single Answer

______ falls under the category of a water tube boiler .

A
Locomotive boiler
B
Lancashire boiler
C
Cornish boiler
D
LaMont boiler

Question 120Single Answer

Chaplets are used in ________ .

A
forging
B
casting
C
welding
D
extrusion

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