
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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