Pulverised fuel fired furnaces employ ______________ fuel firing?

Related Mcqs:

Forced recirculation of furnace gases is practised_______________?

A. To increase heat transfer by convection B. To ensure uniform temperature C. In furnaces, operating below 750°C D. All A., B. and C....

Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C ?

A. 5 B. 60 C. 20 D. 40...

Power required in case of forced draught as compared to induced draught (for the same draught produced) is___________________?

A. Same B. Less C. More D. Either more or less; depends on the flue gas density...

The purpose of controlling the furnace atmosphere is to prevent surface attack by__________________?

A. Oxidation/scaling B. Decarburising C. Sulphur penetration D. Either of the above...

Fuel economy in furnaces can be achieved by_________________?

A. Using oxygen enriched combustion air B. Preheating the combustion air C. Reducing the heat loss through furnace openings & doors D. All A., B. and C....