The condition for the reversibility of a cycle is
A) the pressure & temperature of the working substance must not differ, appreciably, from those of
B) all the processes, taking place in the cycle of operation, must be extremely slow
C) the working parts of the engine must be friction free
D) all of the above
Correct Answer:
Verified
Q9: Which of the following is correct?
A)absolute pressure=
Q10: The unit of energy in SI units
Q11: One watt is equal to
A)1 nm/s
B)1n/min
C)10 n/s
D)100
Q12: One joule (J) is equal to
A)1 nm
B)knm
C)10
Q13: A series of operations, which take place
Q15: According to kinetic theory of heat
A)temperature should
Q16: A system comprising a single phase is
Q17: If all the variables of a stream
Q18: A control volume refers to
A)a fixed region
Q19: Internal energy of a perfect gas depends
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