The percentage improvement in power capacity of a flat belt drive, when the wrap angle at the
Question:
The percentage improvement in power capacity of a flat belt drive, when the wrap angle at the driving pulley is increased from \(150^{\circ}\) to \(210^{\circ}\) by an idler arrangement for a friction coefficient of 0.3 , is
(a) 22.61
(b) 33.92
(c) 40.17
(d) 67.85 .
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