Fuels and Combustion The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C. 700 to 850 550 to 650 350 to 450 100 to 150 700 to 850 550 to 650 350 to 450 100 to 150 ANSWER DOWNLOAD EXAMIANS APP
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. 1250 1400 1100 1350 1250 1400 1100 1350 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Which of the following gaseous fuels is likely to have the highest gross calorific value? LPG Sewage gas Natural gas Producer gas LPG Sewage gas Natural gas Producer gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Ratio of primary air to secondary air increases with increase in the rank of coal, because the Oxygen content progressively decreases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases Oxygen content progressively decreases High rank coals have higher amount of volatile matter Ratio of fixed carbon to volatile matter increases Calorific value of the coal increases ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C. Latent None of these Sensible Sensible and latent Latent None of these Sensible Sensible and latent ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Compound coke ovens are those which can be heated by Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power Rich gas (e.g., coke oven gas) Both B and C Lean gas (e.g., B.F. gas) Both steam and electrical power ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS