Why rectangular coil is used in motor?

In an electric motor, a rectangular coil is suspended between the two poles of a magnetic field. Thus, the coil completes one rotation around the axle. Continuation of this process keeps the motor in rotation. In commercial motor, electromagnet, instead of permanent magnet, and armature is used.

What is the use of rectangular coil?

Explanation: It consists of a rectangular coil of wire which can be rotated about an axis. The coil is located between the poles of two permanent magnets. As the coil rotates, the magnetic field through the coil changes, which induces an electromotive force (e.m.f.)

What will happen if we use circular coil instead of rectangular coil in armature of an electric generator?

Answer: When we use a circular coil and a cylindrical magnet the magnetic field will always be perpendicular to the area vector due to which sin wt which wil be sin90 gives 1 thus giving maximum linking of flux assosciated with the coil at any position.

What does the coil do in an electric motor?

Electric coils are found in electric motors, generators, inductors, and electromagnets. They serve as a conductor of electricity to efficiently send electrical current to electric motors. They are a consistent and reliable method for induction.

What is the rectangular coil in electric motor called?

armature
When a current carrying conductor is kept in a magnetic field it experiences force in the direction perpendicular to both motion of electrons and magnetic field. Complete step by step answer: An armature is a rectangular coil inside the electric motor. Current passes through the armature.

Why do we use armature in motor?

In electrical engineering, an armature is the component of an electric motor which carries alternating Current. When the machine or motor is used as a motor, this EMF opposes the armature Current, and the armature converts electrical power to mechanical power in the form of Torque and transfers it via the shaft.

Why a rectangular coil is used in galvanometer?

A moving coil galvanometer has been fitted with a rectangular coil having 50 turns and dimensions5cm×3cm. It works on the principle that when current flows through a rectangular coil kept in a magnetic field, it is deflected. The angle of deflection is proportional to the current through the coil.

What is the purpose of providing dummy coil in a generator?

The dummy coils are simply to provide mechanical balance for the armature. As they do not connect with commutator bars, they do not affect the electrical characteristics of the winding.

Why does the coil in a motor spin?

A coil of wire becomes an electromagnet when current passes through it. The electromagnet interacts with a permanent magnet, causing the coil to spin.

Why is commutator used?

Commutators and brushes are used on all DC generators and DC motors. On DC and most AC motors the purpose of the commutator is to insure that the current flowing through the rotor windings is always in the same direction, and the proper coil on the rotor is energized in respect to the field coils.