A. 80.0%
B. 76.6%
C. 66.7%
D. 60.7%
Correct Answer:
Option C – 66.7%
Explanation
Efficiency = MA/V.R x 100
V.R = number of pulleys = 6
ma = Load/Effort = 200/50 = 4
Effiecieny = 4/6 × 100 = 66.67%
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