Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part6 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Ultimate analysis of fuel is determination of percentage of |
| carbon, hydrogen, nitrogen, sulphur, moisture |
| fixed carbon, ash, volatile matter, moisture |
| higher calorific value |
| lower calorific value |
| best analysis. |
7.Spontaneous combustion is a phenomenon in which |
| all the fuel burns instantaneously producing high energy release |
| fuel burns with less air |
| coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal |
| explosion in furnace |
| none of the above. |
8.The safety valve at superheater as compared to drum safety valve setting is set at |
| higher value |
| lower value |
| same value |
| any value |
| none of the above. |
9.For combutsion of a fuel, following is essential |
| correct fuel air ratio |
| proper ignition temperature |
| 02 to support combustion |
| all the three above |
| none of the above. |
10.Steam exhaust from high pressure turbine is reheated in |
| boiler drum |
| superheater tubes |
| economiser |
| a separate coil |
| a separate coil located in convection path. |
More Steam Boilers QUESTIONS AND ANSWERS available in next pages
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