Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?

A. constant pressure lines
B. constant temperature lines
C. constant total heat lines
D. constant entropy lines
E. constant volume lines

A. it permits higher speeds to be used
B. it permits complete evaporation in the evaporator
C. it results in high volumetirc and mechanical efficiency
D. all of the above
E. none of the above

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