C:-For operating on and off

D:-None of these

Correct Answer:- Option-A
Question88:-The bush bearing of a compressor is lubricated by

A:-Oil

B:-Grease

C:-Refrigerant

D:-Air and water

Correct Answer:- Option-A
Question89:-Cylinder colour code of R134 ais

A:-Orange

B:-Green

C:-White

D:-Orchid

Correct Answer:- Option-C
Question90:-What is the use of Crank case oil heater 7

A:-Heats up the oil when compressor is idle

B:-Heats up the oil when compressor is ON

C:-Heats up the Refrigerant in crank case

D:-None of these

Correct Answer:- Option-A
Question91:-Pressure relief valve is installed on

A:-Compressor head

B:-Liquid receiver

C:-Discharge line of compressor

D:-All of these

Correct Answer:- Option-D
Question92:-H.C. blend contains

A:-40% isobutene and 60% propane

B:-50% isobutane and 50% propane

C:-50% hydrogen and 50% carbon

D:-50% fluorine and 50% oxygen

Correct Answer:- Option-B
Question93:-Fan motor of split Air conditioner of 1 Ton capacity is

A:-PSC

B:-RSIR

C:-CSR

D:-Shade pole

Correct Answer:- Option-A
Question94:-Spray nozzles of cooling tower is used for

A:-Sprays the water from evaporator

B:-Sprinkle the water from condenser

C:-Sprays the water from chiller

D:-All of these

Correct Answer:- Option-B
Question95:-Evaporative condenser is used in

A:-lce plant

B:-Split air conditioner

C:-Package air conditioner

D:-Window air conditioner

Correct Answer:- Option-A
Question96:-Thermometer is to measure the

A:-Latent heat

B:-Sensible heat

C:-Thermo heat

D:-Specific heat

Correct Answer:- Option-B
Question97:-Duct is used to

A:-Distribute air from AHU to confined space