Frictional Torque Transmitted by Cone Clutch Compared to Other Bearings

The frictional torque transmitted by a cone clutch is compared to other types of bearings to determine which one is equivalent. The options are:

a) Truncated conical pivot bearing
b) Flat collar bearing
c) Conical pivot bearing
d) Flat pivot bearing

Answer: Option A (Truncated Conical Pivot Bearing)

Explanation:

Cone Clutch:

A cone clutch is a type of friction clutch that transmits torque by the friction between the contact surfaces of two truncated cones. When the clutch is engaged, the smaller cone is pushed into the larger cone, creating a frictional force that transmits torque from the input shaft to the output shaft.

Truncated Conical Pivot Bearing:

A truncated conical pivot bearing is a type of bearing that transmits torque by the friction between the contact surfaces of two truncated cones. The cones are supported by a pivot that allows them to rotate freely, and the torque is transmitted through the friction between the cones.

Comparison:

- Flat collar bearing: A flat collar bearing transmits torque through the friction between a flat collar and a shaft. It does not use truncated cones, so it is not equivalent to a cone clutch.
- Conical pivot bearing: A conical pivot bearing also uses truncated cones to transmit torque, but it is supported by a pivot that allows the cones to tilt. This makes it different from a cone clutch, which does not have a pivot.
- Flat pivot bearing: A flat pivot bearing uses a flat surface to support the load, so it is not equivalent to a cone clutch.

Therefore, the correct answer is option A (Truncated Conical Pivot Bearing), as it uses the same principle of frictional torque transmission through truncated cones like the cone clutch.