Mechanical Engineering - Thermodynamics

26.
In an isolated system, neither the heat and work nor the, mass of the working substance crosses the boundary of the system.
True
False
Answer: Option
Explanation:
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27.
The compression ratio is the ratio of
swept volume to total volume
total volume to swept volume
swept volume to clearance volume
total volume to clearance volume
Answer: Option
Explanation:
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28.
When a fluid is allowed to expand suddenly into a vaccum chamber through an orifice of large dimensions, the process is known as free expansion process.
True
False
Answer: Option
Explanation:
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29.
The efficiency of Ericsson cycle is __________ Carnot cycle.
greater than
less than
equal to
Answer: Option
Explanation:
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30.
One molecule of oxygen consists of __________ atoms of oxygen.
2
4
8
16
Answer: Option
Explanation:
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