Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the Use of thick fire bed All of these Low fusion point of ash (< 1100° C) Use of preheated primary air Use of thick fire bed All of these Low fusion point of ash (< 1100° C) Use of preheated primary air ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The hottest part of the flame lies in its____zone. Non-luminous Yellow Unburnt gases Luminous Non-luminous Yellow Unburnt gases Luminous ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion 'Fat' coal means a coal having Low calorific value Non smoking tendency Low ash content High volatile matter Low calorific value Non smoking tendency Low ash content High volatile matter ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the Complete combustion None of these Incomplete combustion High oxygen in flue gas Complete combustion None of these Incomplete combustion High oxygen in flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The average molecular weight of a flue gas having the composition by volume as CO₂ = 25%, O₂ = 25%, N₂ = 50% will be 23 47.3 27.6 42.9 23 47.3 27.6 42.9 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal is most disadvantageous during Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these Handling (e.g. when emptying wagons) Its pulverisation (as it requires more power) Combustion of fire slacks on the grates None of these ANSWER DOWNLOAD EXAMIANS APP
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