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Engineering Thermodynamics

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

23
21
25
73

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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.

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

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

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

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Engineering Thermodynamics
A sudden fall in the barometer reading is a sign of approaching

Fine weather
Storm
Rains
Cold wave

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Engineering Thermodynamics
The absolute zero pressure can be attained at a temperature of

None of these
273 K
-273°C
0°C

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Engineering Thermodynamics
Work done is zero for the following process

All of the listed here
Constant volume
Free expansion
Throttling

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MORE MCQ ON Engineering Thermodynamics

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