Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part6 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.02 content in atmospheric air on volume basis is |
21% |
23% |
30% |
40% |
70%. |
22.In locomotives, the drought is produced by |
chimney |
induced draft fan |
both combined (a) and (b) |
steam jet drought |
none of the above. |
23.In designing air preheater, the important design consideration is that |
approach temperature should be as low as possible |
handling and maintenance should be easier |
heat transfer area should be optimum |
stack gases should not be cooled to the dew point |
none of the above. |
24.The temperature of flue gases at air heater outlet should be |
100�C |
above dew-point temperature of flue gases |
below dew-point temperature of flue gases |
less than wet bulb temperature of flue gases |
above wet bulb temperature of flue gases. |
More Steam Boilers QUESTIONS AND ANSWERS available in next pages
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