Correct Answer - Option 4 : Intermittent load
Intermittent loads: The load on the motor occurs periodically in an identical duty cycle, each duty cycle having a period of application of load and rest.
Cumulative compound motors develop good starting torque and also its no-load speed is limited. Therefore these motors are used for intermittent load applications. I.e. the load operation consists of load and no-load operation intervals continuously.
