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Engineering Thermodynamics

Engineering Thermodynamics
The standard value of atmospheric pressure taken at sea level is

All of these
1013 × 102 N/m2
1.013 bar
760 mm of Hg

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Engineering Thermodynamics
The efficiency of Diesel cycle increases with

Decrease in cut-off
Increase in cut-off
Constant cut-off
None of these

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Engineering Thermodynamics
The volumetric or molar specific heat at constant pressure is the product of

Atomic mass of the gas and the gas constant
Molecular mass of the gas and the gas constant
None of the listed here
Molecular mass of the gas and the specific heat at constant volume

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

77
23
21
25

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Engineering Thermodynamics
The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents

Heat rejected
Heat absorbed
None of the listed here
Either heat absorbed or heat rejected

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

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MORE MCQ ON Engineering Thermodynamics

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