Question

If the mechanical advantage of a machine is 6 and the velocity ratio is 8, what is its efficiency? (in percentage)

Answer 1

$\text{Given}:$ M.A.=6, V.R.= 8

$\text{Solution}:$

Percentage efficiency = $\frac{M.A.}{V.R.}\times 100$

Given M.A. = 4 and V.R. = 6

$\therefore Efficiency=\frac{6}{8}=0.75$

Percentage efficiency = $0.75\times 100=75$

$\text{Hence 75\% is the correct option}$