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Engineering Thermodynamics

Engineering Thermodynamics
Which law states that the specific heat of a gas remains constant at all temperatures and pressures?

Joule's Law
Charles' Law
Regnault's Law
Boyle's Law

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Engineering Thermodynamics
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as

Thermodynamic cycle
Reversible cycle
Irreversible cycle
None of these

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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.

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

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Engineering Thermodynamics
The heat supplied to the gas at constant volume is (where m = Mass of gas, cv = Specific heat at constant volume, cp = Specific heat at constant pressure, T2 - T1 = Rise in temperature, and R = Gas constant)

mR (T2 - T1)
mcp (T2 - T1)
mcp (T2 + T1)
mcv (T2 - T1)

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Engineering Thermodynamics
The absolute zero pressure can be attained at a temperature of

273 K
0°C
-273°C
None of these

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Engineering Thermodynamics
The natural solid fuel is

Coke
Wood
Pulverised coal
Anthracite coal

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