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Engineering Thermodynamics

Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

None of these
Boyle
Charles
Joule

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Engineering Thermodynamics
The unit of energy is S. I. units is

Joule meter (Jm)
Joule/meter (J/m)
Watt (W)
Joule (J)

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Engineering Thermodynamics
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)

1 - rγ - 1
1 - (1/ rγ - 1)
1 + (1/ rγ - 1)
1 + rγ - 1

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Engineering Thermodynamics
When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is

Bituminous coal
Briquetted coal
Coke
Wood charcoal

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

77
21
23
25

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Engineering Thermodynamics
The principal constituents of a fuel are

Oxygen and hydrogen
Carbon and hydrogen
Sulphur and hydrogen
Sulphur and oxygen

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MORE MCQ ON Engineering Thermodynamics

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