REFRIGERATION AND AIR CONDITIONING QUIZ

Highest pressure encountered in a refrigeration system should be

Much above critical pressure

Critical pressure of refrigerant

Near critical pressure

Much below critical pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

Air refrigeration operates on

Carnot cycle

Brayton cycle

Reversed Carnot cycle

Rankine’s cycle

TRUE ANSWER : ?
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During dehumidification process, _________ remains constant.

Wet bulb temperature

Dry bulb temperature

Specific humidity

Relative humidity

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An evaporator is also known as

Chilling coil

Cooling coil

All of these

Freezing coil

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In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Condenser

Expansion valve

Evaporator

Compressor

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Moisture in Freon refrigeration system causes

High power consumption

Corrosion of whole system

Freezing automatic regulating valve

Ineffective refrigeration

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The vapour pressure of refrigerant should be

Equal to atmospheric pressure

Lower than atmospheric pressure

Higher than atmospheric pressure

Could be anything

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The freezing point of R-12 is

-95.2°C

-86.6°C

-135.8°C

-107.7°C

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A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

43834

3

4

43833

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YOUR ANSWER : ?

In a domestic vapour compression refrigerator, the refrigerant commonly used is

R-12

CO?

Ammonia

All of these

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