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Engineering Thermodynamics

Engineering Thermodynamics
The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is

Greater than one
None of these
Equal to one
Less than one

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Engineering Thermodynamics
Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

cv/ cp =R
cp - cv = R
cv = R/ γ-1
Both (B) and (C)

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Engineering Thermodynamics
Which of the following cycles is not a reversible cycle?

None of the listed here
Carnot
Stirling
Ericsson

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Engineering Thermodynamics
When the gas is heated at constant volume, the heat supplied

Does some external work during expansion
None of these
Increases the internal energy of the gas and increases the temperature of the gas
Both (A) and (B)

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Engineering Thermodynamics
During throttling process

There is no change of internal energy of steam
No work is done by expanding steam
All of these
Heat exchange does not take place

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Engineering Thermodynamics
Diesel cycle consists of following four processes

Two isentropic and two constant pressures
Two isentropic, one constant volume and one constant pressure
Two isentropic and two constant volumes
Two isothermal and two isentropic

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