Engineering Thermodynamics
During which of the following process does heat rejection takes place in Carnot cycle?

Isentropic compression
Isothermal expansion
Isothermal compression
Isentropic expansion

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Engineering Thermodynamics
Select the wrong statement

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.
An Otto cycle consists of two constant volume and two isentropic processes.

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Engineering Thermodynamics
According to Clausius statement of second law of thermodynamics

Heat can
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

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Engineering Thermodynamics
Which of the following is the correct statement of the second law of thermodynamics?

All of these
It is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy

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