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Engineering Thermodynamics

Engineering Thermodynamics
The value of cp/cv for air is

2.3
1
1.45
1.4

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

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

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Engineering Thermodynamics
The hyperbolic process is governed by

Avogadro's law
Charles' law
Boyle's law
Gay-Lussac law

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Engineering Thermodynamics
The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents

Either heat absorbed or heat rejected
None of the listed here
Heat absorbed
Heat rejected

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Engineering Thermodynamics
An adiabatic process is one in which

All of these
The temperature of the gas changes
The change in internal energy is equal to the mechanical work done
No heat enters or leaves the gas

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Engineering Thermodynamics
The hard coke is obtained when carbonization of coal is carried out at

700° to 900°C
900° to 1100°C
300° to 500°C
500° to 700°C

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MORE MCQ ON Engineering Thermodynamics

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