The correct relationship between the efficiency (η), mechanical advantage (M.A.) and velocity ratio (V.R.) of an actual machine is :
A. η = M.A × V.R
B. η = M.A. ÷ V.R.
C. η × V.R. = M.A.
D. both (b) and (c)
Answer:C
The correct relationship between the efficiency (η), mechanical advantage (M.A.) and velocity ratio (V.R.) of an actual machine is :
A. η = M.A × V.R B. η = M.A. ÷ V.R. C. η × V.R. = M.A. D. both (b) and (c)