Engineering Thermodynamics
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when

Process is isothermal
Process is isentropic and specific heat does not change with temperature
Process is isentropic
Flow is uniform and steady

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Engineering Thermodynamics
The thermodynamic difference between a Rankine cycle working with saturated steam and the Carnot cycle is that

Rankine cycle is hypothetical
Heat is supplied to water at temperature below the maximum temperature of the cycle
A Rankine cycle receives heat at two places
Carnot cycle can't work with saturated steam

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Engineering Thermodynamics
Select the wrong statement

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

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Engineering Thermodynamics
According to Kelvin-Planck’s statement of second law of thermodynamics,

It is impossible to construct a device which operates in a cyclic process and produces no effect other than the transfer of heat from a cold body to a hot body
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work
None of these
It is possible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work

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