Category: Refrigeration and Air Conditioning

A. 0.1 to 0.5 h.p. per ton of refrigeration
B. 0.5 to 0.8 h.p. per ton of refrigeration
C. 1 to 2 h.p. per ton of refrigeration
D. 2 to 5 h.p. per ton of refrigeration
E. 5 to 10 h.p. per ton refrigeration

A. increase
B. decrease
C. remain unaffected
D. may increase or decrease depending on the type of refrigerant used
E. unpredictable

A. Ammonia
B. Carbon dioxide
C. Freon
D. Brine
E. Hydrocarbon refrigerant

A. high sensible heat
B. high total heat
C. high latent heat
D. low latent heat
E. low sensible heat

A. condensation of the refrigerant vapour
B. evaporation of the refrigerant liquid
C. compression of the refrigerant vapour
D. metering of the refrigerant liquid
E. none of the above

A. increase
B. decrease
C. may increase or decrease depending on the type of refrigerant used
D. remain unaffected
E. unpredictable

A. lowers evaporation temperature
B. increases power required per ton of refrigeration
C. lowers compressor capacity because vapour is lighter
D. reduces weight displaced by piston
E. all of the above

A. in 1 hour
B. in 1 minute
C. in 24 hours
D. in 12 hours
E. in 10 hours

A. -100°C
B. -50°C
C. – 33.3°C
D. 0°C
E. 33.3°C

A. Freon-11
B. Freon-22
C. C02
D. S02
E. ammonia