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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency of Joule cycle is

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

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Engineering Thermodynamics
The efficiency of a Carnot engine depends on

Size of engine
Design of engine
Working substance
Temperatures of source and sink

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Engineering Thermodynamics
The unit of time in S.I. units is

Second
Hour
Day
Minute

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Engineering Thermodynamics
In a free expansion process

Work done is zero but heat increases
Work done is zero
Both (A) and (B) above
Heat transfer is zero

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Engineering Thermodynamics
The amount of heat required to raise the temperature of __________ water through one degree is called kilojoules.

1000 g
100 g
1 g
10 g

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Engineering Thermodynamics
For a perfect gas, according to Boyle’s law (where P = Absolute pressure, V = Volume and T = Absolute temperature)

P/T = constant, if v is kept constant
T/P = constant, if v is kept constant
P v = constant, if T is kept constant
V/T = constant, if p is kept constant

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