Fuels and Combustion Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker. 1400 1350 1100 1250 1400 1350 1100 1250 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Size of blast furnace grade coke is __________ mm. 0-15 15-25 >100 25-80 0-15 15-25 >100 25-80 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Calorific value of Light paraffinic fuel oils is equal to that of equivalent olefins Light paraffinic fuel oils is higher than that of equivalent olefins Light paraffinic fuel oils is lower than that of equivalent olefins N-paraffin is lower than that of iso-paraffins of the same compounds Light paraffinic fuel oils is equal to that of equivalent olefins Light paraffinic fuel oils is higher than that of equivalent olefins Light paraffinic fuel oils is lower than that of equivalent olefins N-paraffin is lower than that of iso-paraffins of the same compounds ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Calorific value of the coal increases High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases High rank coals have higher amount of volatile matter Oxygen content progressively decreases Ratio of fixed carbon to volatile matter increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Prime coking coal is always blended with medium or non- coking coal before ear-bonisation To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Because, it alone produces unreactive coke Neither A nor B Both A & B To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls Because, it alone produces unreactive coke Neither A nor B Both A & B ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Safe condition for storage of high V.M. bituminous coal is that Both A and B Neither A nor B Height of the coal heap should be < 3 metres Maximum 200 tons should be stored in a heap Both A and B Neither A nor B Height of the coal heap should be < 3 metres Maximum 200 tons should be stored in a heap ANSWER DOWNLOAD EXAMIANS APP
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