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  • 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

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

Answers (1)

Answer: C
Solution:

 Commercial electric motors use a solenoid to rotate the armature.
This solenoid is also known as electromagnet.
This is made by whirling large number of wire turns on a soft iron core to create strong magnetic field.

Hence, the correct option of this question is option C

 

 

Posted by

infoexpert27

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