(a) Gear : “A gear is a wheel with teeth around its rim.” Or “Is a precise device to transfer the rotatory motion from one point to the other”.
(b) Driven wheel “A wheel which receives motion from driver wheel and is connected to the load and rotates in opposite direction to driver wheel.”
(c) Driving wheel : “A gear wheel which is closer to the source of power and effort is applied to this wheel is called driving wheel”.
