Which type of boiler can meet rapid changes of load :
A. vertical fire tube type
B. horizontal fire tube type
C. horizontal water tube type
D. vertical water tube type
E. forced circulation type
It is required to produce large amount of steam at low pressure. Which boiler should be used ?
A. pulverised fuel fired boiler
B. Cochran boiler
C. Lancashire boiler
D. babcock and wilcox boiler
E. stoker fired boiler
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
E. none of the above is true
Fusible plug for boilers is made of fusible metal containing tin, lead, and :
A. bismuth
B. copper
C. aluminium
D. nickel
E. iron
Thermal efficiency of well maintained boiler will be of the order :
A. 20%
B. 40%
C. 50%
D. 75%
E. 90%
The fusible plug in small boilers is located :
A. in the drum
B. in the fire tubes
C. above steam dome
D. over the combustion chamber
E. at the inlet of chimney
The number of drums in Benson steam generator is :
A. one
B. two
C. one steam drum and one water drum
D. no drum
E. none of the above
