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Engineering Thermodynamics

Engineering Thermodynamics
Heat and work are

Path functions
Intensive properties
System properties
Point functions

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Engineering Thermodynamics
Diesel cycle consists of following four processes

Two isentropic and two constant volumes
Two isentropic, one constant volume and one constant pressure
Two isothermal and two isentropic
Two isentropic and two constant pressures

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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

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

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Engineering Thermodynamics
The value of 1 mm of Hg is equal to

1.333 N/m2
1333 N/m2
133.3 N/m2
13.33 N/m2

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Engineering Thermodynamics
The reading of the pressure gauge fitted on a vessel is 25 bar. The atmospheric pressure is 1.03 bar and the value of 'g' is 9.81 m/s2. The absolute pressure in the vessel is

26.03 bar
34.81 bar
25 bar
23.97 bar

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Engineering Thermodynamics
Reversed joule cycle is called

Carnot cycle
Bell Coleman cycle
Rankine cycle
Brayton cycle

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MORE MCQ ON Engineering Thermodynamics

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