Mechanical Engineering Questions And Answers :: Steam Boilers: part5



Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part5 : 16 to 20

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.The diameter of fire tubes in Cochran boiler is of the order of

2 cm
6 Cm ,
cm
12 cm
15 cm.

17.In forced circulation type boiler

heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum
water is supplied in drum and through down-comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam
feed pump is employed to supplement natural circulation in water wall type furnace
water is converted into steam in one pass without any recirculation
water is heated in a large number of tubes.

18.The ratio of heat utilised to produce steam and the heat liberated in furnace is known as

boiler effectiveness
boiler evaporative capacity
factor of evaporation
equivalent evaporation
boiler efficiency.

19.It is required to produce large amount of steam at low pressure. Which boiler should be used ?

pulverised fuel fired boiler
cochran boiler
lancashire boiler
babcock and wilcox boiler
stoker fired boiler.

20.Steam in water tube boiler as compared to fire tube boiler

can be raised rapidly
is raised at slower rate
is raised at same rate
could be raised at fast/slow rate depending on design
none of the above is true.

More Steam Boilers QUESTIONS AND ANSWERS available in next pages

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