Question 1

What is a 4 Point Starter?

Accepted Answer

The first question that needs to be kept in mind is that we need 4 points to control the current at the start of the motor and stop it from going into the motor and turn it on smoothly and save the motor from loss of overload. Is. It consists mainly of 4 points and is known as 4 point starter with 4 points which are L (line), F (field), and A (armature). The mainline is used to power the motor. While F is connected to the stator winding of the motor.

Question 2

Working Principle 4 Point Starter:

Accepted Answer

This starter works on the principle of electromagnetic. When current flows through the coil and it becomes strong due to which flux is generated in it which attracts the soft iron part attached to the handle. When this handle becomes reversible, we can prevent the excess currents by adding the resistance attached to the series.

Question 3

Construction Of 4 Point Starter:

Accepted Answer

Thus the line is connected to a soft piece of iron by electromagnetic reinforcement. Which allows current to pass through the electromagnetic. When this electromagnet is excited it attracts a piece of iron because the piece of iron is attracted due to lack of power.

Question 4

Operation Of 4 Points Starter:

Accepted Answer

The handle comes in contact with the studs due to the motion of the handle on the stud. The stud resistance causing the circuit is gradually reduced. And take the handle to the last stud When this handle is on the first stud, it has more resistance. Due to its high resistance, it controls the flow at the beginning. However, due to the high barrier, this can prevent the beginning of the current. The barrier is reduced as the handle moves forward. The current has gradually increased due to the reduction of the barrier. Now the handle in the rotation reaches the final position. Originally this work could be performed due to 2 forces: one force of attraction and the opposing force when this handle is moved attracts the strongly attached electromagnet. And a soft piece of iron is attracted. Due to the opposing force of the spring, it helps to control the position of the handle. The gravitational force must be greater than the opposing force to hold back. If the opposing force is greater than before, the handle returns to the stud across 1no. Always be careful that the force of attraction should be greater to maintain the required speed.

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