Top 50+ Solved Boilers, Mountings and Accessories MCQ Questions Answer
Q. The difference between cornish boiler and lancashire boiler is that
a. former is fire tube type and latter is water tube type boiler
b. former is water tube type and latter is fire tube type
c. former contains one fire tube and latter contains two fire tubes
d. former contains two fire tubes and latter contains one fire tube
Q. A fusible plug is fitted in small boilers in order to
a. avoid excessive build up of pressure
b. avoid explosion
c. extinguish fire if water level in the boiler falls below alarming limit
d. control steam dome
Q. 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
Q. Fusible plug for boilers is made of fusible metal containing tin, lead, and
a. bismuth
b. copper
c. aluminium
d. nickel
Q. The ratio of heat utilised to produce steam and the heat liberated in furnace is known as
a. boiler effectiveness
b. boiler evaporative capacity
c. factor of evaporation
d. boiler efficiency.
Q. 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
Q. Size of boiler tubes is specified by
a. mean diameter and thickness
b. inside diameter and thickness
c. outside diameter and thickness
d. outside diameter and inside diameter
Q. The heat loss in a boiler takes place in the form of
a. heat carried away by flue gases
b. heat carried away by ash
c. radiation
d. all of the above.
Q. In a recuperative air preheater, the heat is transferred
a. from a metal wall from one medium to another
b. from heating an itermediate material and then heating the air from this material
c. by direct mixing ,
d. heat is tr
Q. The function of injector used in small capacity boilers is to
a. create vacuum
b. inject chemical solution in feed pump
c. pump water, similar to boiler feed pump
d. add make up water in the system
Q. The maximum discharge through a chimney occurs when the height of chimney is
a. infinitely long
b. around 200 meters
c. equal to the height of the hot gas column producing draught
d. outside temperature is very low
Q. The economiser is used in boilers to
a. increase thermal efficiency of boiler
b. economise on fuel
c. extract heat from the exhaust flue gases
d. increase flue gas temperature
Q. An economiser in a boiler
a. increases steam pressure
b. increases steam flow
c. decreases fuel consumption
d. decreases steam pressure