For starting a D.C. motor a starter is required because___________?
Correct answer: B. it limits the starting current to a safe value
- A. it limits the speed of the motor
- B. it limits the starting current to a safe value
- C. it starts the motor
- D. none of the above
Explanation
At starting, the motor back emf is zero, so the armature would draw an excessive current limited only by its very low resistance. A starter inserts resistance initially and removes it as speed and back emf build up.
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