Quiz Questions

Question 1 1 Marks

Why frost accumulates in window AC evaporator?

A

Over charge of refrigerant

B

Less charge of refrigerant

C

Capillary chocking

D

Air filter blocked

Question 2 1 Marks

Which evaporator is known as extended surface evaporator?

A

Evaporator tubes

B

Finned evaporator

C

Bare tube evaporator

D

Coiled stake evaporator

Question 3 1 Marks

What is the type of condenser used in direct cool refrigerator?

A

Fin and tube

B

Shell and tube

C

Wire mesh

D

Tube in tube

Question 4 1 Marks

What is the desiccant used in dehydrator of hydrocarbon charged RAC unit?

A

Silica gel

B

Ammonia

C

Sulphur dioxide

D

Calcium chloride

Question 5 1 Marks

What is the remedy for broken bimetal thermo in a frost free refrigerator?

A

Repair the bimetal thermo

B

Reuse the bimetal thermo

C

Replace the bimetal thermo

D

Readjust the bimetal thermo

Question 6 1 Marks

What is the process of accumulation of ice on the surface of evaporator?

A

Frosting

B

Defrosting

C

Evacuating

D

Melting of frost

Question 7 1 Marks

Which component is connected in series with defrost heater in a frost free refrigerator?

A

Door switch

B

Cabinet bulb

C

Bimetal thermo

D

Heating element

Question 8 1 Marks

Which is the constant reference for the working of AEV?

A

Oil temperature

B

Suction pressure

C

Volume expansion

D

Discharge pressure

Question 9 1 Marks

Which type of condenser is directly placed on water spray and air?

A

Shell and tube condenser

B

Water cooled condenser

C

Evaporative condenser

D

Air cooled condenser

Question 10 1 Marks

Why the supply air throw is decreased in window AC?

A

Normal RPM of fan motor

B

Clean air filter

C

Refrigerant leaks

D

Frost blocks air circulation

Question 11 1 Marks

Which expansion valve is suitable for constant load operation?

A

King valve

B

Relief valve

C

Low side float valve

D

Automatic expansion valve

Question 12 1 Marks

Which application uses the capillary tube expansion device?

A

Domestic RAC units

B

Industrial ice plants

C

Commercial AC plants

D

Hospital IAQ systems

Question 13 1 Marks

What are the causes for blockage in
capillary tube?

A

Non condensable gases

B

Moisture and wax from oil

C

Solid particles

D

Over charging of refrigerant

Question 14 1 Marks

Which type of insulation material is used in modern refrigerators?

A

Saw dust

B

Glass wool

C

Thermocole

D

Poly urethane foam

Question 15 1 Marks

Which type of evaporator is used in house hold refrigerator?

A

Plate evaporator

B

Tube in tube evaporator

C

Shell and coil evaporator

D

Shell and tube evaporator

Question 16 1 Marks

What is the centre of gravity of a sphere?

A

At the centre

B

On the circumference

C

At the diameter

D

At the radius

Question 17 1 Marks

What is the name of the point at which all the weight of the body concentrated?

A

Initial point

B

Centre of gravity

C

Centroid

D

Central point

Question 18 1 Marks

Where the centre of gravity of a circle lies?

A

At its centre

B

Any where on its radius

C

Any where on its circumference

D

Any where on its diameter

Question 19 1 Marks

Which one of the following geometrical shapes centre of gravity lies from its base is 1/3 of its height?

A

Square

B

Rhombus

C

Triangle

D

Cone

Question 20 1 Marks

What is the centre of gravity of a right circular cone from its base?

A

h/2

B

h/3

C

h/4

D

h/5

Question 21 1 Marks

Which is the single pole MCB? | ಸಿಂಗಲ್ ಪೋಲ್ MCB ಯಾವುದು?

A

B

C

D

Question 22 1 Marks

Which is the NOT gate in the following picture? | ಕೆಳಗಿನ ಚಿತ್ರದಲ್ಲಿ NOT ಗೇಟ್ ಯಾವುದು?

A

B

C

D

Question 23 1 Marks

Which is protective device? | ರಕ್ಷಣಾತ್ಮಕ ಸಾಧನ ಯಾವುದು?

A

Fuse | ಫ್ಯೂಸ್

B

Resistor | ರೆಸಿಸ್ಟರ್

C

Magnet | ಮ್ಯಾಗ್ನೆಟ್

D

Capacitor | ಕೆಪಾಸಿಟರ್

Question 24 1 Marks

Which part regulates the heat in automatic iron? | ಆಟೋಮೇಟಿಕ್ ಐರನ್ದಲ್ಲಿನ ಶಾಖವನ್ನು ಯಾವ ಭಾಗವು ನಿಯಂತ್ರಿಸುತ್ತದೆ?

A

Heating element | ಹೀಟಿಂಗ್ ಎಲಿಮೆಂಟ್

B

Pressure plate | ಪ್ರೆಶರ್ ಪ್ಲೇಟ್

C

Thermostatic switch | ಥರ್ಮೋಸ್ಟಾಟಿಕ್ ಸ್ವಿಚ್

D

Asbestos sheet | ಆಸ್ಬೆಸ್ಟೋಸ್ ಷೀಟ್

Question 25 1 Marks

What is the name of the gate | ಗೇಟ್ ಹೆಸರೇನು?

A

NOT Gate | NOT ಗೇಟ್

B

Ex-NOR Gate | Ex-NOR ಗೇಟ್

C

OR Gate | OR ಗೇಟ್

D

AND Gate | AND ಗೇಟ್