Heat Transfer
In a backward feed multiple effect evaporator

None of these
Feed is introduced in the first effect
Feed flows from low pressure to high pressure
No pumps are required between successive effects

ANSWER DOWNLOAD EXAMIANS APP

Heat Transfer
The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are

(COP)R = (COP)HP = 0.6
(COP)R = 1.5; (COP)HP = 2.5
(COP)R = 2.5; (COP)HP = 1.5
(COP)R = (COP)HP = 2.5

ANSWER DOWNLOAD EXAMIANS APP