Velocity Ratio of a machine is more than 1. It
A machine works as a (i) force multiplier, (ii) speed multiplier. In each case state whether the velocity ratio than or less than 1.
Select the incorrect statement :
(a) A machine always has the efficiency less than 100%.
(b) The mechanical advantage of a machine can be less than 1.
(c) A machine can be used as a speed multiplier.
(d) A machine can have the mechanical advantage greater than the velocity ratio.
When does a machine act as (a) a force multiplier, (b) a speed multiplier? Can a machine act as a force multiplier and a speed multiplier simultaneously?