Mechanical Engineering Questions And Answers :: Steam Boilers: part8



Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part8 : 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.In water wall furnace, the heat is transferred to the water-walls by

convection
radiation
conduction
radiation and conduction
radiation and convection.

17.In ordered obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will

remain unaffected
improve
worsen
may improve/worsen depending on size
unpredictable.

18.The balanced draft furnace is one using

induced draft fan and chimney
induced draft fan and forced draft fan
forced draft fan and chimney
any one of the above
none of the above.

19.De aeration of feed water is carried out because it reduces

cavitation of .boiler feed pumps
corrosion caused by oxygen
heat transfer coefficient
pH value of water
weight of water to be handled.

20.The feed check valve is used in order to

regulate flow of boiler water
check level of water in boiler drum
recirculate unwanted feed water
allow high pressure feed water to flow to drum and not allow reverse flow to take place
none of the above.

More Steam Boilers QUESTIONS AND ANSWERS available in next pages

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