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Mechanical Engineering - Thermodynamics

Exercise : Thermodynamics - Section 3
21.
For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
greater than
less than
equal to
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Mond gas is obtained by
partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
carbonisation of bituminous coal
passing steam over incandescent coke
passing air and a large amount of steam over waste coal at about 650°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The natural solid fuel is
wood
coke
anthracite coal
pulverised coal
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The condition for the reversibility of a cycle is
the pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process
all the processes, taking place in the cycle of operation, must be extremely slow
the working parts of the engine must be friction free
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
In open cycle gas turbine plants
the indirect heat exchanger and cooler is avoided
direct combustion system is used
a condenser is used
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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