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Engineering Thermodynamics

Engineering Thermodynamics
The general law for the expansion or compression of gases, is

pv = C
pv = m R T
pvn = C
pvγ = C

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Engineering Thermodynamics
The isothermal and adiabatic processes are regarded as

Reversible process
Irreversible process
Reversible or irreversible process
None of the listed here

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Engineering Thermodynamics
When the expansion or compression takes place according to the law pvn = C, the process is known as

Adiabatic process
Isothermal process
Polytropic process
Hyperbolic process

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Engineering Thermodynamics
The oxygen atom is ________ times heavier than the hydrogen atom.

8
32
16
2

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

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Engineering Thermodynamics
The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

None of the listed here
δQ = T.ds
dQ = ds/T
δQ = T/ds

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