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Engineering Thermodynamics

Engineering Thermodynamics
The gas constant (R) is equal to the __________ of two specific heats.

Sum
Ratio
Difference
Product

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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)

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

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Engineering Thermodynamics
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order

Dual cycle, Otto cycle, Diesel cycle
Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Diesel cycle, Otto cycle
Diesel cycle, Otto cycle, Dual cycle

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Engineering Thermodynamics
Which of the following gas is mostly used in town for street and domestic lighting and heating?

Coal gas
Producer gas
Mond gas
Coke oven gas

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Engineering Thermodynamics
When the gas is cooled at constant pressure,

Both temperature and volume increases
Its temperature increases but volume decreases
Its volume increases but temperature decreases
Both temperature and volume decreases

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Engineering Thermodynamics
Measurement of temperature is based on

Second law of thermodynamics
First law of thermodynamics
Thermodynamic properties
Zeroth law of thermodynamics

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MORE MCQ ON Engineering Thermodynamics

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