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Engineering Thermodynamics

Engineering Thermodynamics
Barometric pressure is equal to

760 mm Hg
735.6 mm Hg
Zero mm Hg
1 mm Hg

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Engineering Thermodynamics
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

Expansion and compression are isentropic
Combustion is at constant volume
Maximum temperature is higher
Heat rejection is lower

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Engineering Thermodynamics
The efficiency of Joule cycle is

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

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Engineering Thermodynamics
First law of thermodynamics furnishes the relationship between

Heat, work and properties of the system
Heat and work
Various properties of the system
Various thermodynamic processes

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Engineering Thermodynamics
The compression ratio for Diesel engines is

5 to 8
3 to 6
20 to 30
15 to 20

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

pv = C
pvγ = C
pvn = C
pv = m R T

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MORE MCQ ON Engineering Thermodynamics

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