Q. Explain the types of belt drive used for power transmission? Also derive the velocity ratio of them.
Sol: There are mainly three types of belt drive: (1) Open belt drive
(2) Cross belt drive
(3) Compound belt drive
(1) Open Belt Drive
When shafts are arranged in parallel and rotating in same direction, open belt drive can be obtained.
In the diagram given below, pulley 'A' is called as driver pulley because it is attached with rotating shaft.