In a boiler installation the natural draught is produced_____________?

Power Generation 27/10/2020

A. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in
B. due to the fact that pressure at the grate due to cold column is higher than the pressure at the chimney base due to hot column
C. due to the fact that at the chimney top the pressure is more than its environmental pressure
D. all of the above

Related Mcqs:

    Rankine efficiency of a steam power plant____________?
    A. improves in summer as compared to that in winter B. improves in winter as compared to that in summer C. is unaffected by climatic conditions D. none of the above...
    The draught produced, for a given height of the chimney and given mean temperature of chimney gases_______________?
    A. decreases with increase in outside air temperature B. increases with increase in outside air temperature C. remains the same irrespective of outside air temperature D. may increase or decrease with increase in outside air temperature...
    In a regenerative surface condenser_____________?
    A. there is one pump to remove air and condensate B. there are two pumps to remove air and condensate C. there are three pumps to remove air, vapour and condensate D. there is no pump, the condensate gets removed by gravity...
    Bucket elevators are used for___________?
    A. carrying coal in horizontal direction B. carrying coal in vertical direction C. carrying coal in any direction...
    In hydro power plant, the graph between discharge and time is known as___________?
    A. monograph. B. load graph. C. discharge graph. D. hydro graph...

Leave a Reply

Your email address will not be published. Required fields are marked *