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Engineering Thermodynamics

Engineering Thermodynamics
The statement that molecular weights of all gases occupy the same volume is known as

Gas law
Law of thermodynamics
Dalton's law
Avogadro's hypothesis

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Engineering Thermodynamics
Carnot cycle efficiency is maximum when

Initial temperature is 0°K
Difference between initial and final temperature is 0°K
Final temperature is 0°K
Final temperature is 0°C

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Engineering Thermodynamics
The work ratio of simple gas turbine cycle depends upon

Minimum cycle temperature
Maximum cycle temperature
Pressure ratio
All of these

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Engineering Thermodynamics
Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)

Both (B) and (C)
cv/ cp =R
cp - cv = R
cv = R/ γ-1

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Engineering Thermodynamics
In an irreversible process, there is a

No gain of heat
Loss of heat
No loss of heat
Gain of heat

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Engineering Thermodynamics
Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits?

O₂, N₂, steam, CO₂
O₂, N₂, water vapour
SO₂, NH₃, CO₂, moisture
O₂, N₂, H₂, air

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