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Engineering Thermodynamics

Engineering Thermodynamics
The molecular mass expressed in gram (i.e. 1 g - mole) of all gases, at N. T. P., occupies a volume of

22.4 liters
0.224 liters
224 liters
2.24 liters

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Engineering Thermodynamics
Molecular volume of any perfect gas at 600 × 103 N/m² and 27°C will be

4.17 m3/kg mol
0.15 m3/kg mol
41.7 m3/kg mol
400 m3/kg mol

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Engineering Thermodynamics
For same compression ratio and for same heat added

Efficiency depends on other factors
Diesel cycle is more efficient than Otto cycle
Otto cycle is more efficient than Diesel cycle
Both Otto and Diesel cycles are equally efficient

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Engineering Thermodynamics
The behavior of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Gay-Lussac law
All of the listed here
Boyle's law
Charles' law

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Engineering Thermodynamics
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when

Flow is uniform and steady
Process is isentropic
Process is isentropic and specific heat does not change with temperature
Process is isothermal

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Engineering Thermodynamics
The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

(v1 + v2)/v2
(v1 + v2)/v1
v1/v2
v2/v1

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MORE MCQ ON Engineering Thermodynamics

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