R

Ram Sharma • 193.88K Points
Coach

Q. 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

  • (A) (COP)R = (COP)HP = 0.6
  • (B) (COP)R = 2.5; (COP)HP = 1.5
  • (C) (COP)R = 1.5; (COP)HP = 2.5
  • (D) (COP)R = (COP)HP = 2.5
  • Correct Answer - Option(C)
  • Views: 174
  • Filed under category Heat Transfer
Share

No solution found for this question.
Add Solution and get +2 points.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Related MCQs

Q. By-products are __________ recovered in 'Beehive ovens'.

Q. Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.

Q. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is

Q. In a co-current double pipe heat exchanger used for condensing saturated steam over the inner tube, if the entrance and exit conditions of the coolant

Q. For pipes that must be broken at intervals for maintenance, the connector used should be a/an

Q. An example of a periodic furnace is the

Q. Longitundinal stress induced in a thin walled cylindrical storage vessel is

Q. Wood metal is not used for making

Q. Which of the following produces maximum pressure difference for transportation of gases?

Q. Which is the most commonly used molten metal for cooling of nuclear reactors?

Question analytics