Fuels and Combustion Emission of dense white smoke out of the chimney of a thermal power plant is an indication of the use of Too much air for combustion Correct amount of air for combustion Less air for combustion Pulverised coal in boilers Too much air for combustion Correct amount of air for combustion Less air for combustion Pulverised coal in boilers ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion __________ prohibits the use of alcohols directly in petrol engines. High cost & availability Low octane number Low calorific value Low flash point High cost & availability Low octane number Low calorific value Low flash point ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Higher percentage of ash in coal meant for the production of metallurgical grade coke Decreases the abrasion resistance of coke None of these Decreases the hardness of coke Causes brittleness in steel Decreases the abrasion resistance of coke None of these Decreases the hardness of coke Causes brittleness in steel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) None of these Combustion of fire slacks on the grates Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) None of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following is a measure of the agglutinating (i.e., binding) property of coal? Gray-king index Caking index Thickness of plastic layer Swelling index Gray-king index Caking index Thickness of plastic layer Swelling index ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = 2A M = 1.5A M = A M = 1.1A M = 2A M = 1.5A M = A M = 1.1A ANSWER DOWNLOAD EXAMIANS APP
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