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Answer :

For starting a D.C. motor a starter is required because it limits the starting current to a safe value.

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Description : Why starter is required for starting an induction motor?

Answer : A direct online starter is used for starting motors up to 5 H.P.

Answer : The starting resistance of a D.C. motor is generally low.

Description : Explain the necessity of starter for D.C. motor. State various types of D.C. motor starter. 

Answer : Necessity of Starter for D.C. Motor: Armature current is given by equation Ia = (V−Eb)/Ra i) If the motor is at standstill or rest, back emf Eb is zero (as Eb= ZNP/(60A), at start speed N ... . Types of D.C. motor starters: i) Two point starter ii)Three point starter iii) Four point starter

Description : Which type of starter is used to start the DC motor?