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Engineering Thermodynamics

Engineering Thermodynamics
The value of n = 1 in the polytropic process indicates it to be

Adiabatic process
Irreversible process
Reversible process
Isothermal process

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Engineering Thermodynamics
First law of thermodynamics furnishes the relationship between

Various properties of the system
Various thermodynamic processes
Heat, work and properties of the system
Heat and work

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Engineering Thermodynamics
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency

Zero
43835
43834
2

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Engineering Thermodynamics
The heat and mechanical energies are mutually convertible. This statement was established by

Boyle
None of these
Joule
Charles

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Engineering Thermodynamics
A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is

May be possible with lot of sophistications
Cost will be very high
Not possible
Theoretically possible

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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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