It is advisable to avoid line starting of induction motor and use starter because____________?
Correct answer: C. motor takes five to seven times its full load current
- A. it will run in reverse direction
- B. it will pick up very high speed and may go out of step
- C. motor takes five to seven times its full load current
- D. starting torque is very high
Explanation
At direct line starting, an induction motor has very low impedance because there is no back emf, so it draws about five to seven times its full-load current. A starter limits this inrush current and reduces supply voltage disturbance.
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