Mining Engineering > GATE 2026 > Mine Ventilation - Booster Fans
In an underground coal mine, the air quantities QA and QB passes through ventilation districts A and B, respectively as shown, with a pressure drop of ΔP across them. The air quantity in district B is to be increased to Q′B by installing a booster fan, as shown, without affecting the air quantity in ventilation district A. The capacity of booster fan (PB) can be expressed as
A
PB = ΔP(QB/Q′B)2 - ΔP
B
PB = ΔP(Q′B/QB)2 - ΔP
C
PB = ΔP - ΔP(Q′B/QB)2
D
PB = ΔP + ΔP(Q′B/QB)2

Correct : b

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Related Topics

coal mine ventilation underground coal mine ventilation districts booster fan selection air quantity increase GATE Mining Engineering 2026 ventilation booster fan mining engineering gate air quantity change GATE 2026 question 39

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