Direct-on-line (DOL) starters are not suitable for starting large dc motors, because
A. the starting current will be enormously high, which will cause large voltage drop in the supply mains.
B. the motor may not start.
C. the motor may run away.
D. the starting torque becomes low.
Answer:A
Direct-on-line (DOL) starters are not suitable for starting large dc motors, because
A. the starting current will be enormously high, which will cause large voltage drop in the supply mains. B. the motor may not start. C. the motor may run away. D. the starting torque becomes low.