When is artificial draught preferred?(a) When quick evacuation of flue gases is required(b) When we choose large power plant systems(c) When draught produced by chimney is not sufficient(d) When there are many components inside the boilerI got this question in my homework.My doubt stems from Draught System in chapter Steam Generators & Accessories of Energy Engineering

When is artificial draught preferred?(a) When quick evacuation of flue

1.	When is artificial draught preferred?(a) When quick evacuation of flue gases is required(b) When we choose large power plant systems(c) When draught produced by chimney is not sufficient(d) When there are many components inside the boilerI got this question in my homework.My doubt stems from Draught System in chapter Steam Generators & Accessories of Energy Engineering
Answer» Right answer is (C) When draught produced by chimney is not sufficient The best explanation: This type of draught is preferred when draught produced by the chimney is not sufficient or when a certain draught is to be MAINTAINED irrespective of ATMOSPHERIC temperature. ARTIFICIAL draught as no flexibility, as poor efficiency and REQUIRES tall chimney.

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