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Engineering Thermodynamics

Engineering Thermodynamics
The ___ is obtained when carbonization of coal is carried out at 500° to 700° C.

Pulverized coal
Soft coal
Bituminous coal
Hard coal

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

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

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Engineering Thermodynamics
The ratio of two specific heats of air is equal to

1.41
0.24
0.17
0.1

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Engineering Thermodynamics
One Joule (J) is equal to

1 N-m
1 kN-m
10 kN-m/s
10 N-m/s

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Engineering Thermodynamics
The absolute zero temperature is taken as

273°C
-237°C
237°C
-273°C

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Engineering Thermodynamics
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.

None of these
Both (A) and (B)
Change
Do not change

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