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Engineering Thermodynamics

Engineering Thermodynamics
The value of gas constant (R) in S. I. units is

287 J/kgK
2.87 J/kgK
0.287 J/kgK
28.7 J/kgK

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Engineering Thermodynamics
The fuel mostly used in steam boilers is

Non-coking bituminous coal
Peat
Brown coal
Coking bituminous coal

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Engineering Thermodynamics
The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)

3 Ru × T
1.5 Ru × T
Ru × T
2 Ru × T

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Engineering Thermodynamics
In a no flow reversible process for which p = (-3V + 15) × 105 N/m², V changes from 1 m3 to 2 m3. The work done will be about

100 × 10⁵ joules
10 × 10⁵ kilo joules
1 × 10⁵ joules
10 × 10⁵ joules

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Engineering Thermodynamics
The processes occurring in open system which permit the transfer of mass to and from the system, are known as

None of the listed here
Flow processes
Non-flow processes
Adiabatic processes

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Engineering Thermodynamics
If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called

Free expansion
Adiabatic expansion
Parabolic expansion
Hyperbolic expansion

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MORE MCQ ON Engineering Thermodynamics

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