At the instant of starting, when a DC motor is put on supply, it will behave like ______________(a) Highly resistive circuit(b) Low resistance circuit(c) Capacitive circuit(d) Inductive circuitI have been asked this question at a job interview.I want to ask this question from DC Motor Basics -2 in chapter DC Motors of DC Machines

At the instant of starting, when a DC motor is put on supply, it will

1.	At the instant of starting, when a DC motor is put on supply, it will behave like ______________(a) Highly resistive circuit(b) Low resistance circuit(c) Capacitive circuit(d) Inductive circuitI have been asked this question at a job interview.I want to ask this question from DC Motor Basics -2 in chapter DC Motors of DC Machines
Answer» Correct answer is (b) Low resistance circuit For explanation: At the starting when BACK emf is very low, machine will fetch large AMOUNT of armature current from SUPPLY acting as a low resistive circuit. In order to avoid such case, we use starters in DC machine which ADD some resistance to armature at the starting.

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