Steam Boilers, Engines, Nozzles and Turbines
Steam in water tube boiler as compared to fire tube boiler

Could be raised at fast/slow rate depending on design
Is raised at slower rate
Can be raised rapidly
Is raised at same rate

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
The object of producing draught in a boiler is

To exhaust the gases of combustion from the combustion chamber
To provide an adequate supply of air for the fuel combustion
All of the listed here
To discharge the gases of combustion to the atmosphere through the chimney

ANSWER DOWNLOAD EXAMIANS APP