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What is the range of efficiency of cupola?(a) 20% to 40%(b) 30% to 50%(c) 40% to 60%(d) 50% to 70% |
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Answer» The correct choice is (b) 30% to 50% To elaborate: The efficiency of cupola is decided by factors like heat used in preheating, heat used in coke, heat used in oxidation and heat in the air blast. The efficiency of a cupola varies from 30% to 50%. |
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