REFRIGERATION AND AIR CONDITIONING QUIZ

At critical Temperature

Much below critical temperature

Above critical temperature

Near critical temperature of refrigerant

Ammonia

R-11

R-12

R-22

After leaving the condenser

Before entering the condenser

Before entering the compressor

After leaving the compressor

420 kJ/ min

840 kJ/ min

21 kJ/ min

210 kJ/ min

Above which liquid becomes solid

Above which liquid will remain liquid

Above which liquid becomes gas

Above which liquid becomes vapour

None of these

Decreases C.O.P.

Increases C.O.P.

Does not alter C.O.P.

Dry bulb temperature is higher than wet bulb temperature

Dry bulb, wet bulb and dew point temperature are same

Dry bulb temperature is higher than dew point temperature

Dew point temperature is lower than wet bulb temperature

None of the listed here

Increases

Decreases

Remains constant

R-22

Ammonia

R-11

R-12

Condenser

Compressor

Evaporator

Expansion valve