During polytropic process_________________?

Steam Boilers, Engines, Nozzles and Turbines 18/12/2021

A. heat transfer takes place across cylinder walls
B. work is done
C. steam may be wet, dry or superheated after expansion
D. all of the above
E. none of the above

Related Mcqs:

    Pick up the correct statement as regards Cornish boiler and Lancashire boiler _______________?
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    On Millier chart, the constant pressure lines_________________?
    A. diverge from left to right B. diverge from right to left C. are equally spaced throughout D. first rise up and then fall E. none of the above...
    Proximate analysis of fuel is determination of percentage of ____________________?
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    Deaeration of feed water is carried out because it reduces ____________________?
    A. cavitation of .boiler feed pumps B. corrosion caused by oxygen C. heat transfer coefficient D. pH value of water E. weight of water to be handled...
    The heat loss in a boiler takes place in the form of________________?
    A. heat carried away by flue gases B. heat carried away by ash C. moisture present in fuel and steam formed by combustion of hydrogen in fuel D. radiation E. all of the above...

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