Fuels and Combustion During combustion of coal on grate, clinker formation is increased by the 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 Use of thick fire bed All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Narrow coke ovens as compared to wider coke ovens All of these Produce smaller coke Produce stronger coke Require less time of carbonisation All of these Produce smaller coke Produce stronger coke Require less time of carbonisation ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Theoretical flame temperature of a fuel is that temperature which is attained, when the fuel is completely burnt 'using theoretical amount of air in Either A or C without gain or loss of heat Air Oxygen Either A or B Either A or C without gain or loss of heat Air Oxygen Either A or B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F. >120 90-110 >120 90-110 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Presence of free moisture in coal during its high temperature carbonisation Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these Increases the loss of fine coal dust from the ovens when charging Reduces the coking time Protects the volatile products from pyrolysis (cracking) in the presence of hot coke and hot oven walls None of these Increases the loss of fine coal dust from the ovens when charging ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Number of macrocomponents present in coal according to Stopes are Two Four Five Six Two Four Five Six ANSWER DOWNLOAD EXAMIANS APP
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