Power Plant Engineering QUESTIONS AND ANSWERS

Electrical Engineering : Power Plant Engineering QUESTIONS AND ANSWERS :: part2 : 11 to 15

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

11.The draught in locomotive boilers is produced by

forced fan

chimney

steam jet

only motion of locomotive

12.The effect of considering friction in steam nozzles for the same pressure ratio leads to

increase in dryness fraction of exit steam

decrease in dryness fraction of exit steam

no change in the quality of exit steam

decrease or increase of dryness frac-tion of exit steam depending upon inlet

13.The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is

0.6

0.578

0.555

0.5457

14.In a boiler installation the natural draught is produced

due to the fact that furnace gases being light go through the chimney giving place

ld air from outside to rush in

due to the fact that pressure at the grate due to cold column is higher than the

ure at the chimney base due to hot column

15.The pressure at the furnace is minimum in case of

forced draught system

induced draught system