Question

A three-point starter is used for _________

(a) Shunt motors

(b) Shunt as well as compound motors

(c) Shunt, compound and series motors

(d) Not for DC motors

I got this question in an international level competition.

The above asked question is from Starting of DC Motors topic in portion DC Motors of DC Machines

Answer 1

The correct answer is (b) Shunt as well as compound motors

For explanation: 3-point starters are used only for shunt and compound motors, they are not used for series motors. Three-point starter is employed where motor field current can be varied in a narrow range and so does the motor speed.