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Engineering Thermodynamics

Engineering Thermodynamics
The entropy __________ in an irreversible cyclic process.

None of these
Increases
Decreases
Remains constant

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Engineering Thermodynamics
Those substances which have so far not been resolved by any means into other substances of simpler form are called

Elements
Compounds
Atoms
Molecules

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

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

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Engineering Thermodynamics
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

1 - rγ - 1
1 - (1/r) γ/γ - 1
1 - (1/r) γ - 1/ γ
rγ - 1

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Engineering Thermodynamics
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Diesel cycle, Otto cycle
Diesel cycle, Otto cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle

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Engineering Thermodynamics
The unit of temperature in S.I. units is

Centigrade
Kelvin
Celsius
Fahrenheit

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MORE MCQ ON Engineering Thermodynamics

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