Quiz Questions

Question 1 1 Marks

What is the atmospheric pressure at sea
level?

A

1.033 kg/cm2

B

1.3 Kg/cm2

C

1.5 Kg/cm2

D

1.6 Kg/cm2

Question 2 1 Marks

What is the rate of doing work?

A

Duty

B

Force

C

Power

D

Velocity

Question 3 1 Marks

What is the boiling point of pure water in centigrade scale?

A

212 Degree Centigrade

B

100 Degree Centigrade

C

32 Degree Centigrade

D

0 Degree Centigrade

Question 4 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 5 1 Marks

Which component controls the thermostat and defrost heater in frost free refrigerator?

A

Thermoheater

B

Defrost timer

C

Relay

D

OLP

Question 6 1 Marks

Which factors produce work?

A

Force and distance

B

Time and distance

C

Force and power

D

Force and time

Question 7 1 Marks

What is the unit of electric current?

A

Ampere

B

Farad

C

Ohm

D

Volt

Question 8 1 Marks

What is the unit of electrical energy?

A

Volt

B

Watt

C

Ampere

D

Kilo watt hour

Question 9 1 Marks

Which component defrosts in frost free refrigerator?

A

Bulb

B

Heater

C

Thermostat

D

Capillary tube

Question 10 1 Marks

Which domestic system uses automatic defrost?

A

Frost free refrigerator

B

Conventional refrigerator

C

Split air - conditioner

D

Window air - conditioner

Question 11 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 12 1 Marks

Which device protects the compressor motor from drawing more current?

A

OLP

B

Relay

C

Thermostat

D

Door switch

Question 13 1 Marks

How much is the maximum capacity of refrigerant to be filled in a returnable service cylinder?

A

Up to 95%

B

Up to 90%

C

Up to 85%

D

Up to 80%

Question 14 1 Marks

Which insulating material is poured as liquid?

A

Glass Wool

B

Cork Board

C

Wood Shave

D

Poly Urethane Foam (PUF)

Question 15 1 Marks

Which substance absorbs heat and directly changes its state from solid to vapour?

A

Ice

B

Dry ice

C

Primary refrigerants

D

Secondary refrigerants

Question 16 1 Marks

What is the tool used for holding hot metals?

A

Tongs

B

Spanner

C

Pipe vice

D

Bench vice

Question 17 1 Marks

What is the storage capacity of oxygen cylinder?

A

3 m3

B

5 m3

C

6 m3

D

7 m3

Question 18 1 Marks

What is the colour of acetylene hose pipe in oxy - acetylene welding set?

A

Maroon

B

Green

C

Black

D

Red

Question 19 1 Marks

Which type of condenser is used in window air conditioner?

A

Fins and tube

B

Plate and tube

C

Plate and coil

D

Bare tube

Question 20 1 Marks

Which type of expansion valve is used in window air conditioner?

A

Capillary tube

B

Low side float valve

C

Automatic expansion valve

D

Thermostatic expansion valve

Question 21 1 Marks

Which type of evaporator is used in window air conditioner?

A

Bare tube

B

Plate and tube

C

Fins and plate

D

Fins and tube

Question 22 1 Marks

Which capacity of fan motor is used in 1Ton window air conditioner?

A

1/5 HP

B

1/10 HP

C

1/16 HP

D

1/20 HP

Question 23 1 Marks

Which capacitor is connected in series with starting winding of CSR motor during operation?

A

Fan capacitor|

B

Run capacitor

C

Start capacitor

D

No capacitor is connected

Question 24 1 Marks

Which is the hydrocarbon refrigerant?

A

R 12

B

R123

C

R 500

D

R 600a

Question 25 1 Marks

Which type of compressor is used as a vacuum pump?

A

Reciprocating

B

Centrifugal

C

Rotary

D

Scroll

Question 26 1 Marks

What is the full form of the relay - PTC?

A

Positive temperature coefficient

B

Permanent temperature control

C

Polar terminal checking

D

Positive terminal circuit

Question 27 1 Marks

How the potential relay coil is connected internally to the relay terminals?

A

5 and 1

B

5 and 4

C

5 and 2

D

2 and 4

Question 28 1 Marks

Which two terminals read the highest resistance while testing refrigerator compressor motor?

A

Start and run

B

Common and run

C

Start and common

D

Start and compressor body

Question 29 1 Marks

Which type of motor drive is used in hermetic compressor in refrigerator?

A

Belt drive

B

Gear drive

C

Direct drive

D

Push drive

Question 30 1 Marks

Which material is used to make the evaporator of refrigerator?

A

Galvanised iron

B

Stainless steel

C

Aluminium

D

Brass

What is the atmospheric pressure at sea level?