A machine of velocity ratio 6 requires an effort of 400 N to raise a load of 800 N through I m. Find the efficiency of the machine
-
A.
55. 6 % -
B.
50.0% -
C.
33.3% -
D.
22.2%
Correct Answer: Option C
Explanation
Efficiency = (MA)/V.R x 100% = (load)/Effort x (1)/V.R
= (800)/400 x (1)/6 x 100% = 33.3%