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Engineering Thermodynamics

Engineering Thermodynamics
Which of the following is the lightest and most volatile liquid fuel?

Kerosene
Gasoline
Fuel oil
None of these

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Engineering Thermodynamics
A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is

Cost will be very high
May be possible with lot of sophistications
Theoretically possible
Not possible

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

-40 kJ
-140 kJ
+60 kJ
-80 kJ

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Engineering Thermodynamics
The efficiency of Stirling cycle is __________ Carnot cycle.

None of these
Greater than
Less than
Equal to

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Engineering Thermodynamics
The heat and work are mutually convertible. This statement is called ___ law of thermodynamics.

Third
Zeroth
First
Second

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

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