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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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Health is the greatest gift, contentment is the greatest wealth -Buddha
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