Commercial electric motors do not use :

An electromagnet to rotate the armature

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Effectively large no. of turns of conducting wire in the current carrying coil

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A permanent magnet to crate the armature

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A soft iron core on which the coil is wound

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Solution

The correct option is C A permanent magnet to crate the armature
Since permanent magnet do not produce strong magnetic field it is not used in commercial electric motors.

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Similar questions

Question 6
Commercial electric motors do not use

(a) an electromagnet to rotate the armature
(b) effectively large number of turns of conducting wire in the current carrying coil
(c) a permanent magnet to rotate the armature
(d) a soft iron core on which the coil is wound

Commercial electric motors do not use a permanent magnet to rotate the armature.

Q. Statement 1: Permanent magnet is used in commerical electric motors.
Statement 2: Number of turns of conducting wire is kept low.
Select the correct option from below.

An armature consists of an arrangement of insulated copper wires wound around a soft iron core.

Q. The same current is passed through the following. Which will show the strongest magnetic strength?

(a) straight conducting wire
(b) coil of wire
(c) solenoid wound on a wooden core
(d) solenoid wound on an iron core

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Commercial electric motors do not use :

The correct option is C A permanent magnet to crate the armatureSince permanent magnet do not produce strong magnetic field it is not used in commercial electric motors.

The correct option is C A permanent magnet to crate the armature
Since permanent magnet do not produce strong magnetic field it is not used in commercial electric motors.