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Engineering Thermodynamics

Engineering Thermodynamics
The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to

∝
1
γ

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Engineering Thermodynamics
The gas constant (R) is equal to the

Ratio of two specific heats
Sum of two specific heats
Product of two specific heats
Difference of two specific heats

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Engineering Thermodynamics
The efficiency of a Carnot engine depends on

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

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Engineering Thermodynamics
The entropy of water at 0°C is assumed to be

1
-1
2

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Engineering Thermodynamics
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle

Combustion is at constant volume
Maximum temperature is higher
Heat rejection is lower
Expansion and compression are isentropic

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Engineering Thermodynamics
The fuel mostly used in blast furnace for extracting pig iron from iron ores is

Bituminous coal
Soft coke
Pulverized coal
Hard coke

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MORE MCQ ON Engineering Thermodynamics

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