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Engineering Thermodynamics

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

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

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Engineering Thermodynamics
In an extensive property of a thermodynamic system

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

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Engineering Thermodynamics
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant

Temperature
Enthalpy
Volume
Pressure

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Engineering Thermodynamics
The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)

v2/v1
(v1 + v2)/v1
v1/v2
(v1 + v2)/v2

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Engineering Thermodynamics
For the same compression ratio, the efficiency of dual combustion cycle is

Less than Diesel cycle and greater than Otto cycle
Less than Diesel cycle
Greater than Diesel cycle and less than Otto cycle
Greater than Diesel cycle

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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

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

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MORE MCQ ON Engineering Thermodynamics

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