Clausius statement is related to.

Clausius statement is related to

a. heat engine operating in a cycle
b. heat pump operating in a cycle
c. both a. and b.
d. none of the above

Correct Answer : b. heat pump operating in a cycle

Explanation :

Clausius statement of second law of thermodynamics states that, it is impossible to construct a device (heat pump), operating in a cycle, whose sole effect is to transfer of heat from a cooler body to a hotter body, without expending any work input. Heat pump is a device which transfers heat from a cooler body to a hotter body but with expending considerable amount of work. Heat always flows from a hotter body to cooler body spontaneously, but the reverse of this is not possible spontaneously. Heat can not flow of itself from body at a lower temperature to a body at a higher temperature. Some work has to be expended to run a heat pump.