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Engineering Thermodynamics

Engineering Thermodynamics
The value of gas constant (R) in S. I. units is

28.7 J/kgK
287 J/kgK
0.287 J/kgK
2.87 J/kgK

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Engineering Thermodynamics
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

Irreversible cycle
None of these
Reversible cycle
Thermodynamic cycle

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Engineering Thermodynamics
The efficiency and work ratio of a simple gas turbine cycle are

Low
High
Very low
Very high

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Engineering Thermodynamics
A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as

Otto cycle
Diesel cycle
Stirling cycle
Carnot cycle

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T.ds
None of the listed here
δQ = T/ds
dQ = ds/T

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Engineering Thermodynamics
All perfect gases change in volume by 1/273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called

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

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