Question

the motor starter is switched on and off by the: select one: a. contactors that are switched on and off by the motor relays. b. motor relays that are switched on and off by the control relays. c. contactors that are switched on and off by the control relays. d. control relays that are switched on and off by contactors. clear my choice

Explanation:

In electrical - motor control systems, control relays control the on - off operation of contactors, and contactors are used to switch the motor starter on and off.

Answer:

C. Contactors that are switched on and off by the control relays.