'Fat coals' are those coals which have very high Inherent moisture content Caking capacity Volatile matter content Fusion point of its ash TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following can be made into briquettes without the use of a binder? Lignite None of these Anthracite coal Bituminous coal TRUE ANSWER : ? YOUR ANSWER : ?
Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec. 500 10 0.5 50 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following gaseous fuels is likely to have the highest gross calorific value? Producer gas Natural gas Sewage gas LPG TRUE ANSWER : ? YOUR ANSWER : ?
Anthracite coal Burns with short, bluish, yellow-tipped flame producing very little smoke Is essentially a coking coal Contains more volatile matter than bituminous coal Ignites more easily than bituminous coal TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following petrographic constituents of coal is non-coking? Durain Clarain Vitrain Fussain TRUE ANSWER : ? YOUR ANSWER : ?
'Fuel' can be defined as a substance which produces heat by Nuclear fusion Combustion Nuclear fission All of these TRUE ANSWER : ? YOUR ANSWER : ?
Combustion of pulverised coal compared to the lumpy coal Provides better control of furnace temperature Provides higher thermal efficiency & flame temperature Facilitates combustion with lower excess air All of these TRUE ANSWER : ? YOUR ANSWER : ?
A coal with high ash content Is not subjected to washing Is harder and stronger Has low quantity of mineral matter Has higher calorific value TRUE ANSWER : ? YOUR ANSWER : ?