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Engineering Thermodynamics

Engineering Thermodynamics
The efficiency of Diesel cycle increases with

Constant cut-off
None of these
Increase in cut-off
Decrease in cut-off

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Engineering Thermodynamics
When the gas is heated at constant pressure, the heat supplied

Increases the internal energy of the gas
Does some external work during expansion
Both (B) and (C)
Increases the temperature of the gas

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Engineering Thermodynamics
The behavior of a perfect gas, undergoing any change in the variables which control physical properties, is governed by

Charles' law
Gay-Lussac law
Boyle's law
All of the listed here

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Engineering Thermodynamics
Which of the following items is not a path function?

Kinetic energy
Work
Thermal conductivity
Heat

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Engineering Thermodynamics
The calorific value of gaseous fuel is expressed in

kJ/m2
kJ/kg
kJ
kJ/m3

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Engineering Thermodynamics
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is

-80 kJ
-140 kJ
+60 kJ
-40 kJ

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