Correct option is A
A DC shunt motor is used to drive a constant speed lathe. DC shunt motors are the most preferred DC motors for constant speed applications.
Explanation:
· DC shunt motors are constant speed motors that maintain a nearly constant speed from no load to full load.
· The torque of a DC shunt motor varies linearly with the current.
· DC shunt motors are used in many applications that require a consistent speed, including lathes, fans, blowers, and pumps.