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. lowers the boiling point of a liquid
B. raises the boiling point of a liquid
C. .does not affect the boiling point of a liquid
D. reduces its volume
E. none of the above
A. temperature, time, and turbulance
B. total air, true fuel, and turbulance
C. thorough mixing, total air, and temperature
D. total air, time, and temperature
E. none of the above
A. 421 kgm
B. 421 kgm
C. 539 kgm
D. 102 kgm
E. 75 kgm
A. pulverising coal in inert atmosphere
B. heating wood in a limited supply of air at temperatures below 300GC
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-etts
E. enriching carbon in the coal
A. better burning
B. more calorific value
C. less radiation loss
D. medium sized units
E. stoker fired boilers
A. Ps-Pa
B. pa-ps
C. Pa+P
D. non of these