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Engineering Thermodynamics

Engineering Thermodynamics
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

1.5 Ru × T
3 Ru × T
Ru × T
2 Ru × T

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Engineering Thermodynamics
Which of the following has the minimum atomic mass?

Oxygen
Nitrogen
Sulphur
Carbon

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

Less than
Greater than
Equal to
None of these

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Engineering Thermodynamics
The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

v2/v1
(v1 + v2)/v1
v1/v2
(v1 + v2)/v2

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Greater than Diesel cycle and less than Otto cycle
Less than Diesel cycle and greater than Otto cycle
Less than Diesel cycle
Greater than Diesel cycle

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

Zeroth
First
Third
Second

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