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Engineering Thermodynamics

Engineering Thermodynamics
The specific heat of air increases with increase in

Temperature
Both pressure and temperature
Pressure
Variation of its constituents

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Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

10 × 10⁵ joules
100 × 10⁵ joules
1 × 10⁵ joules
10 × 10⁵ kilo joules

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Engineering Thermodynamics
One kilowatt is equal to

1000 N-m/s
1 N-m/s
100 N-m
1 × 106 N-m/s

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Engineering Thermodynamics
The condition of perfect vacuum, i.e., absolute zero pressure can be attained at

A temperature of 0°C
A temperature of 273 °K
A negative pressure and 0°C temperature
A temperature of - 273.16°C

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Engineering Thermodynamics
The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Three-forth
One-half
Two-third
One-third

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Engineering Thermodynamics
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.

Change
None of these
Do not change
Both (A) and (B)

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MORE MCQ ON Engineering Thermodynamics

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