A machine of velocity ratio 6 requires an effort of 400N to raise a load of 800N through Im. Find the efficiency of the machine

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A. 55. 6 %
B. 50.0%
C. 33.3%
D. 22.2%

Correct Answer:

Option C = 33.3%

Explanation

Efficiency = (MA)/V.R x 100% = (load)/Effort x (1)/V.R
= (800)/400 x (1)/6 x 100% = 33.3%

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