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Engineering Thermodynamics

Engineering Thermodynamics
The same volume of all gases would represent their

Gas characteristic constants
Densities
Specific weights
Molecular weights

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Engineering Thermodynamics
For same compression ratio and for same heat added

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

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Engineering Thermodynamics
An adiabatic wall is one which

Permits thermal interaction
Encourages thermal interaction
Prevents thermal interaction
Discourages thermal interaction

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Engineering Thermodynamics
The general law for the expansion or compression of gases, is

pvγ = C
pvn = C
pv = C
pv = m R T

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Engineering Thermodynamics
The efficiency of Joule cycle is

Less than Carnot cycle
Equal to Carnot cycle
None of these
Greater than Carnot cycle

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Engineering Thermodynamics
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)

1 - (T2/T1)
(T1/T2) - 1
1 - (T1/T2)
1 + (T2/T1)

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MORE MCQ ON Engineering Thermodynamics

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