Correct option is C
A
Woodruff key is a
semi-circular key that is embedded partly in the shaft and partly in the hub. It is mainly used for
transmitting light torque and allows for easy assembly and disassembly. The curved shape helps in precise alignment and resists shearing. This key is particularly useful on tapered fittings of shafts.
Gib Head Key: A
gib head key is a
rectangular key with a projecting head (gib) for easy removal.
It is used in heavy-duty applications where disassembly is required frequently.
Feather Key: A
feather key is a
long key that allows axial sliding of the hub while transmitting torque.
Commonly used in
gears and couplings where movement along the shaft is needed.
