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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency of a Carnot engine depends on

Size of engine
Temperatures of source and sink
Working substance
Design of engine

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

pv = m R T
pvγ = C
pv = C
pvn = C

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Engineering Thermodynamics
The pressure of a gas in terms of its mean kinetic energy per unit volume 'E' is equal to

E/2
E/3
2E/3
3E/4

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

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Engineering Thermodynamics
In an extensive property of a thermodynamic system

Extensive work is done
Extensive energy is utilized
None of the listed here
Extensive heat is transferred

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Engineering Thermodynamics
The efficiency of the dual combustion cycle for the same compression ratio is __________ Diesel cycle.

Less than
None of these
Equal to
Greater than

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MORE MCQ ON Engineering Thermodynamics

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