Related Questions

For the same draught produced the power of induced draught fan as compared to forced draught fan is
A less
B more
C same
D not predictable
The main advantage of forced draft over natural draft is that
A Combustion of fuel is complete
B Smaller height chimney can be used
C Furnace control is easier
D All of the above
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
A Blow off cock
B Fusible plug
C Stop valve
D Safety valve
Power required in case of forced draught as compared to induced draught (for the same draught produced) is
A Same
B Less
C More
D Either more or less; depends on the flue gas density
In a furnace employing forced draught as compared to induced draught,
A Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced
B The fan operates hot and hence blades are liable to corrosion and erosion
C Positive pressure exists in the furnace
D None of these
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
A More
B Less
C Equal
D None of these
Steam in water tube boiler as compared to fire tube boiler
A Can be raised rapidly
B Is raised at slower rate
C Is raised at same rate
D Could be raised at fast/slow rate depending on design
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
A More heating surface
B Less heating surface
C Equal heating surface
D Heating surface depends on other parameters
The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
A Same
B Slightly less
C Slightly more
D Much more
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase
A Increases
B Decreases
C Remains unchanged
D Increases/decreases depending on steam temperature requirements

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