Mechanical Engineering Questions And Answers :: Steam Boilers: part6



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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