Refrigeration and Air Conditioning

A. is less than 1
B. is more than 1
C. is equal to 1
D. depends upon the make
E. depends upon the weather conditions

A. a gas will never liquefy
B. a gas will immediately liquefy
C. water will evaporate
D. water will never evaporate
E. none of the above

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

A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or throttle valve
D. before [entering the expansion valve
E. before entering the compressor

A. water at 0°C
B. ice at – 4°C
C. solid and dry ice
D. mixture of ice, water and vapour under equilibrium conditions under NTP conditions
E. mixture of ice and water Under equilibrium conditions

A. 50 kcal/min
B. 50 kcal/kr
C. 80 kcal/min
D. 80 kcal/hr
E. 1000 kcal/day

A. very little work input
B. maximum work input
C. nearly same work input as for vapour compression cycle
D. zero work input
E. none of the above

A. Carnot cycle
B. Rankine cycle
C. reversed Camot cycle
D. reversed Rankine cycle
E. none of the above

A. noisy operation
B. quiet operation
C. cooling below 0°C
D. very little power consumption
E. its input only in the form of heating

A. after passing through the condenser
B. before passing through the condensei
C. after passing through the expansion throttle valve
D. before entering the expansion valve
E. before entering the compressor