Quiz Questions

ITI Quiz - 04-Mar-2026 10:23 AM (ITISKILL1774QP)

Q-Paper A-Paper
Question 1 1 Marks
What is the absolute pressure of gas in a cylinder, if gauge reads 135.3 p.s.i?
A
130 p.s.i.a
B
140 p.s.i.a
C
150 p.s.i.a
D
160 p.s.i.a
Question 2 1 Marks
What is the unit of heat in M.K.S system?
A
B.T.U (British thermal unit)
B
K.Cal (Kilo Calorie)
C
KV (Kilo Volt)
D
K.W (Kilo Watt)
Question 3 1 Marks
Which components are connected by metering device in vapour compression cycle?
A
Condenser and evaporator
B
Compressor and condenser
C
Evaporator and suction line
D
Compressor and evaporator
Question 4 1 Marks
What is the melting temperature of silver
brazing rod?
A
1120 Degree F
B
1200 Degree F
C
1250 Degree F
D
1300 Degree F
Question 5 1 Marks
Which condition is maintained for refrigerant in high side of vapour compression system?
A
Above its critical temperature
B
Below its critical temperature
C
Above its freezing temperature
D
Below its freezing temperature
Question 6 1 Marks
What is the absolute zero temperature in
degree centigrade?
A
0 Degree Centigrade
B
100 Degree Centigrade
C
-273 Degree Centigrade
D
212 Degree Centigrade
Question 7 1 Marks
What is the equivalent absolute scale for centigrade?
A
Kelvin
B
Celsius
C
Rankine
D
Fahrenheit
Question 8 1 Marks
What is the capacity of doing work?
A
Work
B
Power
C
Force
D
Energy
Question 9 1 Marks
Which law is related to the constant PV at constant T?
A
Boyles law
B
Charles s law
C
Pascal s law
D
Renaults law
Question 10 1 Marks
What is the advantage of using flux in brazing?
A
Over heating
B
Melting tubes
C
Prevent Oxidation
D
Chemical reaction
Question 11 1 Marks
What is the energy of a body by virtue of its position?
A
Wind energy
B
Kinetic energy
C
Potential energy
D
Electrical energy
Question 12 1 Marks
Which components maintain the pressure difference in RAC system?
A
Condenser and filter
B
Evaporator and motor
C
Receiver and condenser
D
Compressor and expansion device
Question 13 1 Marks
What is the rate of doing work?
A
Duty
B
Force
C
Power
D
Velocity
Question 14 1 Marks
What is effect of compression process on refrigerant vapour?
A
Heat the vapour below saturation
B
Cool the vapour above saturation
C
Increase the pressure and temperature
D
Decrease the pressure and temperature
Question 15 1 Marks
What is the purpose of accumulator in a refrigerator?
A
Improves oil circulation
B
Prevents surging of refrigerant
C
Avoids hunting of refrigerant
D
Prevents liquid flood back to compressor
Question 16 1 Marks
Which component is replaced to prevent air entering the refrigerator cabinet?
A
Thermostat
B
Door gasket
C
Door paint
D
Door hinges
Question 17 1 Marks
What is the temperature maintained in the refrigerator freezer?
A
0 Degree Centigrade
B
- 15 Degree Centigrade
C
- 45 Degree Centigrade
D
- 65 Degree Centigrade
Question 18 1 Marks
Which movement of plunger energises the start winding in relay operation?
A
Vertically up
B
Bottom side
C
Vertically down
D
Horizontally left
Question 19 1 Marks
What is the cut out temperature of bimetal thermo in frost free refrigerator?
A
5 Degree Centigrade
B
10 Degree Centigrade
C
20 Degree Centigrade
D
25 Degree Centigrade
Question 20 1 Marks
Which device protects the compressor motor from drawing more current?
A
OLP
B
Relay
C
Thermostat
D
Door switch
Question 21 1 Marks
What is smothering in fire extinguishing?
A
Pouring of CTC
B
Flashing with dry powder
C
Use water to lower temperature
D
Cutting off oxygen supply to fire
Question 22 1 Marks
Which tool is used for trimming the edges of a sheet metal cylinder?
A
Straight snips
B
Bent snips
C
Tube cutter
D
Scissors
Question 23 1 Marks
Which material is used to clean oil and grease on the floor?
A
Cotton waste
B
Saw dust
C
Water
D
Air
Question 24 1 Marks
Which medium is used to extinguish Class - A fire?
A
CO<sub>2</sub>
B
Foam
C
Water
D
Dry powder
Question 25 1 Marks
Which tool is used for bending long sheet metal?
A
Folding bar
B
Bench vice
C
Hand vice
D
Shear
Question 26 1 Marks
What is the least count of a metric micrometer?
A
0.1 mm
B
0.01 mm
C
0.001 mm
D
000.1 mm
Question 27 1 Marks
What is the material composition of a Tin man s solder?
A
50% Tin 50% Zinc
B
50% Tin 50% lead
C
50% Zinc 50% lead
D
50% Tin 50% Bronze
Question 28 1 Marks
What is the angle of the tip of centre punch?
A
30 Degree
B
60 Degree
C
90 Degree
D
120 Degree
Question 29 1 Marks
Which extinguishes the fire of flammable liquids?
A
Water
B
Air
C
CO<sub>2</sub>
D
Oil
Question 30 1 Marks
Which is the point angle of a twist drill used for zinc alloy?
A
90 Degree
B
100 Degree
C
118 Degree
D
125 Degree
Question 31 1 Marks
Which is used to connect the rotor bars in 3phase squirrel cage induction motor?
A
Screw
B
Welded
C
End ring
D
Nut and bolt
Question 32 1 Marks
What is the use of suction baffle in a scroll compressor?
A
Reduce noise of compressor
B
Increase noise of compressor
C
Reduce capacity of compressor
D
Allow liquid to enter into compressor
Question 33 1 Marks
Where the refrigerant vapour is compressed in scroll compressor?
A
Fixed and reciprocating scroll
B
Between fixed and orbiting scrolls
C
Crank and connecting rod
D
Eccentric and cylinder
Question 34 1 Marks
Which is disconnected by centrifugal switch is RSIR motor?
A
Running winding
B
Common winding
C
Starting winding
D
Running capacitor
Question 35 1 Marks
What is the use of capacitor in PSC
operated induction motor?
A
Decrease the starting torque
B
Cancel the starting torque
C
Improve the power factor
D
Decrease the power factor
Question 36 1 Marks
Which capacitor is disconnected by relay in capacitor start and induction run motor?
A
Starting capacitor
B
Running capacitor
C
Boosting capacitor
D
Power factor correction capacitor
Question 37 1 Marks
What is the formula to find out the
synchronous speed of induction motor?
A
Ns=(150P/f)
B
Ns=(120f/P)
C
Ns=(150f/P)
D
Ns=(120P/f)
Question 38 1 Marks
Which type of compressor is used for domestic refrigerator?
A
Semi sealed compressor
B
Centrifugal compressor
C
Hermetic compressor
D
Open type compressor
Question 39 1 Marks
Which movement of the scroll compresses the low pressure vapour in scroll compressor?
A
Reciprocating
B
Centrifugal
C
Rotating
D
Orbital
Question 40 1 Marks
What is the reason for poor compression?
A
Less clearance volume
B
Scratches on the piston surface
C
Lapped valve plate and reed seat
D
Good lubrication on the moving parts