1 cu-m of steam having dryness franction 0.85 at 12 ata mixes with 1.5 kg of water at 12 C at constant pressure. The dryness fraction of resulting steam would be
A Carnot refrigerator extracts 100 kcal of heat per minute from a cold room which is maintained at - 15?C and it is discharged to atmosphere at 30?C. The horse power required to run the unit would be
The air standard efficiency of a turbine cycle is 57%. Which one of the following may be Carnot efficiency between the temperature limits of the cycle?