Single Phase Motors MCQ - Electrician (Set-1) with Answers

Single Phase Motors MCQ - Electrician (Set-1) with Answers

1) The type of the motor that does not have a commutator is :

Answer is:

induction motor

Explanation:

.

2) The rotor of a split-phase motor receives its power from :

Answer is:

magnetic induction

3) The induction motors are designed for :

Answer is:

all the above

4) The direction of rotation of a capacitor-start motor can be reversed by :

Answer is:

reversing the connections of either the running winding or the starting winding

5) What is the synchronous speed of 6 poles motor running at 50 Hz frequency supply ?

Answer is:

1000 R.P.M.

Explanation:

Ns=(120 x Frequency)/Number of Poles

Ns=(120×50)/6=1000 RPM