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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