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प्रश्न
Commercial electric motors do not use ____________.
पर्याय
an electromagnet to rotate the armature
effectively large number of turns of conducting wire in the current-carrying coil
a permanent magnet to rotate the armature
a soft iron core on which the coil is wound
MCQ
रिकाम्या जागा भरा
उत्तर
Commercial electric motors do not use a permanent magnet to rotate the armature.
Explanation:
The magnetic field strength of an electromagnet is increased by raising the current. As a result, the electric power will be increased.
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