Explanation: 2-point starter is enough to start the DC series motor.
How does a DC series motor start?
A series DC motor converts electric energy to mechanic energy based on the electromagnetic principle. In this type of DC motor, a power supply terminal sits at one end of the armature and field coils. By applying the voltage, power starts in these terminals and passes through armature and field windings.
Which motor is used in 4 point starter?
A 4 point starter protects the armature of a DC shunt motor or compound wound DC motor against the initially high starting current of the DC motor.
Why starters are required in a DC motor * 1 point?
Since armature resistance is very low, armature current drawn is very high and will damage the machine. … Well, that’s the reason why we use starters in a DC motors, in order to limit the armature current flowing through the armature and to protect machine circuitry.
What is the principle of DC series motor?
The DC motor is the motor which converts the direct current into the mechanical work. It works on the principle of Lorentz Law, which states that “the current carrying conductor placed in a magnetic and electric field experience a force”. And that force is the Lorentz force.
What are the advantages of DC series motor?
Advantages of DC Series Motor
Dc series motor have good accelerating torque. Dc series motor have a relatively huge starting torques. Dc series motor delivers high torque during an overload. The dc series motor draws less current and power from the source compared to a shunt or compound motor.
Why a DC motor starter is called 3 Point starter?
What is a Three-point Starter? It is named as a 3-point starter because this starter has 3 terminals, one is L (line) linked to supply, one is F (field) linked to the field and the other is A (armature) linked to the armature. The starter box contains some parts such as the spring, handle and an electromagnetic coil.