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Engineering Thermodynamics

Engineering Thermodynamics
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 MPa and absorbs 84 kJ of heat during the process. The change in internal energy of the mixture is

114 kJ
84 kJ
30 kJ
54 kJ

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

Product
Ratio
Difference
Sum

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Engineering Thermodynamics
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as

First law of thermodynamics
Second law of thermodynamics
Kinetic theory of gases
Zeroth law of thermodynamics

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Engineering Thermodynamics
The fuel mostly used in cement industry and in metallurgical processes is

Bituminous coke
Pulverized coal
Coke
Wood charcoal

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Engineering Thermodynamics
The efficiency of Diesel cycle depends upon

Cut-off ratio and compression ratio
Temperature limits
Pressure ratio
Compression ratio

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

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

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