Category: Steam Boilers, Engines, Nozzles and Turbines

A. pulverising coal in inert atmosphere
B. heating wood in a limited supply of air at temperatures below 300°C
C. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D. binding the pulverised coal into brick-ettes
E. enriching carbon in the coal

A. 1.5 m, 4 m
B. 1.5 m, 6 m
C. 1 m, 4 m
D. 2 m, 4 m
E. 1.5 m, 8 m

A. unburnt carbon in ash
B. incomplete combustion
C. ash content
D. flue gases
E. radiation losses

A. chimney
B. induced draft fan
C. both combined A. and B.
D. steam jet draught
E. none of the above

A. more heating surface
B. less heating surface
C. equal heating surface
D. heating surface depends on other parameters
E. none of the above

A. 0.2
B. 0.8
C. 1.0
D. 0.6
E. 0.5

A. increase thermal efficiency of boiler
B. economise on fuel
C. extract heat from the exhaust flue gases
D. increase flue gas temperature
E. to heat feed water by bled steam

A. non-coking bituminous coal
B. brown coal
C. pulverised coal
D. coking bituminous coal
E. none of the above

A. remains same
B. increases
C. decreases
D. behaves unpredictably
E. none of the above

A. 0.1
B. 0.3
C. 0.5
D. 0.8
E. 1.0