Best answer: What does commercial electric motor do not use?

Since permanent magnet do not produce strong magnetic field it is not used in commercial electric motors.

Why do commercial motors use electromagnet and not permanent magnet?

Answer: Electromagnets are used instead of a permanent one because electomagnets are more powerful. Electromagnets provide the force that spin the motor. Other than that, an electromagnet can be rapidly manipulated over a wide range by controlling the amount of electric current.

Which type of magnet does a commercial electric motor make use of?

In commercial electric motors field coils are used for producing magnetic fields and not a permanent magnet. These coils become magnetized when current is passed through them. Field coils give a stronger, more easily shaped magnetic field than permanent magnets.

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What are the uses of commercial motor?

Answer: A commercial motor vehicle (CMV) is any vehicle used to transport goods or passengers for the profit of an individual or business. Examples of CMVs include pickup trucks, box trucks, semi-trucks, vans, coaches, buses, taxicabs, trailers and travel trailers.

Why do commercial motors use soft iron core on which coil is Mount?

Explanation: 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. Answer: … It enhances the power of motor.

Why is electromagnets use in commercial motor?

Electromagnets are used instead of a permanent one because electomagnets are more powerful. Electromagnets provide the force that spin the motor. Other than that, an electromagnet can be rapidly manipulated over a wide range by controlling the amount of electric current.

What is the difference between simple motor and commercial motor?

A simple motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it, a force acts on a coil which rotates it continuously while in commercial motors, the coil is bound on a soft iron core which becomes magnetized and increase the length of the magnetic field …

Which one of the following is incorrect about commercial electric motor?

Since permanent magnet do not produce strong magnetic field it is not used in commercial electric motors.

Why does a commercial motor use large number of turns of the copper wire?

In commercial electric motors: … This increases the strength of magnetic field, which makes the motor more powerful. The coil contains a large number of turns of insulated copper wire.

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What is the role of split rings in an electric motor?

Role of Split Ring in an Electric Motor

Split ring is used for reversing the direction of current in the coil. … Therefore, after every half rotation of the coil the direction of the couple rotating the coil remains the same and the coil continues its rotation in the same direction.

Which enhances the power of motor?

The power of the DC motor increases by increasing the torque developed by the shaft/rotor which in turn depends on the current in direct proportion.

How can the power of commercial motor be increased?

The power of the commercial motors is increased in the following ways: (i) Permanent magnet is replaced with electromagnet. (ii) The conducting material of the current carrying coilis manufactured with large number of coils. (iii) The coil is wound on a soft iron core.

How can you increase the power of a commercial electric motor?

1 Answer

  1. The power of electric motor can be enhanced by.
  2. (i) using an electromagnet in place of permanent magnet.
  3. (ii) increasing the number of turns in the coil and.
  4. (iii) using a soft iron core on which the coil is wound.

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What is a coil winding on a soft iron core called?

The Electromagnet. A simple electromagnet can be created by wrapping a coil of wire around a soft iron core, such as a large nail.

What should be the core of electromagnet?

Core of an electromagnet should be of soft iron and not of steel because soft iron loses all its magnetism when current in the coil is switched off but steel does not lose its magnetism when the current is stopped.

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Under what conditions permanent electromagnet is obtained?

Answer: The conditions to obtain permanent electromagnet as following if a current carrying solenoid is used are (i) The current through the solenoid should be direct current. (ii) The rod inside is made of a magnetic material such as steel.

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