REFRIGERATION AND AIR CONDITIONING QUIZ

1/ B.P.F.

1 + B.P.F.

P.F. - 1

1 - B. P.F.

Equal to critical temperature

Increased to a value above its critical temperature

Reduced to a value below its critical temperature

None of these

R-12

Ammonia

Sulphur dioxide

Carbon dioxide

Freon-11

Freon-22

Air

CO2

Condenser

Expansion valve

Evaporator

Compressor

Carnot cycle

None of these

Reversed Carnot cycle

Any one of the above

Equal to unity

Always less than unity

Always more than unity

Four heat exchangers

Three heat exchangers

Two heat exchangers

One heat exchanger

Atmospheric pressure

Slightly above atmospheric pressure

24 bars

56 bars

None of these

Superheated vapour refrigerant

Dry saturated liquid refrigerant

A mixture of liquid and vapour refrigerant