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Q. |
An electric motor drives a windless which hauls up a crate A of weight W = 500 kg up an inclined plane through a height of 10 m in 2 minutes. The torque acting on the windless is 25 kgm and the drum of the windless makes 30 rpm. The efficiency of the inclined plane would be |
A. | 41% |
B. | 61% |
C. | 26.50% |
D. | 53.05% |
E. | 66% |
Answer» D. 53.05% |
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