Furnace Technology Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. 65-70 44119 45-50 25-30 65-70 44119 45-50 25-30 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Regenerators are used for waste heat recovery in By-product coke ovens Soaking pits Blast furnace stoves Beehive coke oven By-product coke ovens Soaking pits Blast furnace stoves Beehive coke oven ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is the most suitable for preheating combustion air above 650°C ? None of these Regenerator Ceramic recuperator Metallic recuperator None of these Regenerator Ceramic recuperator Metallic recuperator ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Occupy more space Are less costly Have higher pressure differential between flue gas & air side Are lighter Occupy more space Are less costly Have higher pressure differential between flue gas & air side Are lighter ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Forced recirculation of furnace gases is practised All of these To ensure uniform temperature To increase heat transfer by convection In furnaces, operating below 750°C All of these To ensure uniform temperature To increase heat transfer by convection In furnaces, operating below 750°C ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace. High frequency induction Low frequency induction Arc Resistance High frequency induction Low frequency induction Arc Resistance ANSWER DOWNLOAD EXAMIANS APP
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