Related Questions

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
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
In fire tube boilers
A Water passes through the tubes which are surrounded by flames and hot gases
B The flames and hot gases pass through the tubes which are surrounded by water
C Forced circulation takes place
D None of these
Fire tube boilers are those in which
A Flue gases pass through tubes and water around it
B Water passes through the tubes and flue gases around it
C Forced circulation takes place
D Tubes are laid vertically
Fire tube boilers are limited to a maximum working pressure of
A 0.17 MN/m2
B 1.7 MN/m2
C 17 MN/m2
D 170 MN/m2
Fire tube boilers are limited to a maximum design working pressure of
A 1 kg/cm
B 6 kg/cm
C 17 kg/cm2
D 100 kg/cm2
Very high pressure boilers are usually __________ boilers.
A Fire tube
B Water tube
C Waste heat
D Natural circulation
A fire broke out in a garments factory. How many minutes would it take for a fire truck to got to the fire 10 miles away if it travels at a rate of 20 mph?
A 10/20
B 20/10
C 60 * (10/20)
D 60 * (20 /10)
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
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.
A Less than
B 1.25-1.50 times
C 2.5 times
D One-fourth of

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