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Engineering Thermodynamics

Engineering Thermodynamics
One kg of carbon produces ___ kg of carbon dioxide.

11/3
3/7
4/11
11/7

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Engineering Thermodynamics
The efficiency of the Carnot cycle may be increased by

Increasing the highest temperature
Keeping the lowest temperature constant
Decreasing the highest temperature
Increasing the lowest temperature

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Engineering Thermodynamics
Those substances which have so far not been resolved by any means into other substances of simpler form are called

Molecules
Compounds
Atoms
Elements

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Engineering Thermodynamics
On weight basis, air contains following parts of oxygen

73
23
25
21

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Engineering Thermodynamics
The thermal efficiency of an ideal gas turbine plant is given by (where r = Pressure ratio)

1 - rγ - 1
rγ - 1
1 - (1/r) γ/γ - 1
1 - (1/r) γ - 1/ γ

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Engineering Thermodynamics
The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

pv = RTm
pv = (RT)m
pv = mRT
pvm = C

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