Which of the following is not used in commercial electric motors?

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

What do commercial electric motors do not use?

The combination of soft iron core and coil is called an armature. It enhances the power of motor. Thus, commercial electric motors do not use permanent magnet to rotate the armature because permanent magnets are weak and do not produce strong magnetic field in the region.

What is a commercial electric motor?

Commercial motors are difference from simple electric motors in the following ways. In commercial motor an electromagnet is used in place of permanent magnet. Commercial motors have more number of turns of conducting wire in current carrying coil. Commercial motors have soft iron core on which the coil is wound.

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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.

What are the 4 parts of an electric motor?

Six Key Components That Make Up Your Industrial Electric Motor

  • 1) The Rotor. The rotor is the moving part of your electric motor. …
  • 3) The Bearings. The rotor in your electric motor is supported by bearings, which allow it to turn on its axis. …
  • 4) The Windings. …
  • 5) The Air Gap. …
  • 6) The Commutator. …
  • What Do All of These Components Have in Common?

13.11.2019

What does the commercial electric motor constitutes give reason?

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. … Therefore the suitable field coil sizes are used for various commercial purposes.

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.

What are the components of commercial electric motor?

Construction: The main parts of a commercial electric motor are the electromagnets, armature, split ring commutators, and brushes. The armature coil ABCD consists of a rectangular coil made of insulated copper wire wound on a laminated soft iron core.

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What is difference between commercial motor and simple 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 …

What do commercial electric motors use to enhance the power of the motor?

The combination of soft iron core and coil is an armature. It enhances the power of motor. Thus, commercial electric motors do not use permanent magnet to rotate the armature because permanent magnets are weak and do not produce strong magnetic field in the region.

How we can make a simple motor for commercial use?

Answer: The reversing of the current is repeated at each half rotation, giving rise to a continuous rotation of the coil and to the axle.In commercial motor an electromagnet is used in place of permanent magnet.

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.

What are two main components of an electric motor?

Every electric motor has two essential parts: one stationary, and one that rotates. The stationary part is the stator.

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What are the functions of a simple electric motor?

An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor’s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor’s shaft.

How does a simple electric motor works?

This simple electric motor works by the magnetic force F = IL x B. … The magnetic field at both of these spots points in the same direction. Thus, the magnetic force on the wire at opposite ends of the loop points in opposite directions, causing it to spin.

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