Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Increasing the lowest temperature
Keeping the lowest temperature constant
Increasing the highest temperature
Decreasing the highest temperature

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Engineering Thermodynamics
According to Clausius statement of second law of thermodynamics

Heat can be transferred from low temperature to high temperature source if COP of process is more than unity
Heat can
Heat can be transferred for low temperature to high temperature source by using refrigeration cycle
Heat can

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Engineering Thermodynamics
Select the wrong statement

An Otto cycle consists of two constant volume and two isentropic processes.
An Ericsson cycle consists of two constant pressure and two isothermal processes.
All of these
A Joule cycle consists of two constant volume and two isentropic processes.

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