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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following cycles has maximum efficiency?

Carnot
Rankine
Stirling
Brayton

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Engineering Thermodynamics
Brayton cycle consists' of following four processes

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

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Engineering Thermodynamics
Which of the following gas has the highest calorific value?

Blast furnace gas
Mond gas
Producer gas
Coal gas

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Engineering Thermodynamics
On weight basis, air contains following parts of oxygen

21
23
73
25

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Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

None of these
Increases
Remains constant
Decreases

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Engineering Thermodynamics
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called

Isothermal process
Polytropic process
Adiabatic process
Hyperbolic process

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