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Steam Boilers QUESTIONS AND ANSWERS

Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part7 : 16 to 20

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.Pick up wrong statement about desired properties of a good fuel

high calorific value

produce minimum smoke and gases

ease in storing

high ignition point

economical

17.Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of

higher effectiveness of boiler

high calorific value coal being burnt

fouling of heat transfer surfaces

raising of steam temperature

leakage of air.

18.Gusset stays in a boiler are provided to

prevent the bulging of flat surfaces

avoid explosion in furnace

prevent leakage of hot flue gases

support furnace freely from top

prevent atmospheric air leaking into furnace.

19.The behavior of coal in a furnace is determined by

the content of sulfur

the content of ash and heating value

the proximate analysis

the exact analysis

its type.

20.Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value

(1- moisture content)

(1 + moisture content)

1 + moisture content

1 - moisture content

opt 5

More Steam Boilers QUESTIONS AND ANSWERS available in next pages