Which of the following starters does not provide reduced voltage upon starting?

Question

Which of the following starters does not provide reduced voltage upon starting? Primary resistor starter Soft starter Across-the-line starter Wye-delta starter What can be done to primary resistor starters to obtain a more smooth start? Reduce the resistor values. Short the resistors sooner upon starting. Add resistor stages. All of the answers above are correct. Why are primary resistors bypassed once the motor is started? To heal up the motor. To diminish the voltage applied to the motor. To avoid power losses through the resistors. All of the answers above are correct. What advantage(s) do soft starters have over primary resistor starters? More power losses No wearing parts More space needed All of the answers above are correct.

Explanation / Answer

1.c-Across the line starter(Dol) applies the full voltage to the motor

2.c-Add resistor stages.then we can get more smoother control because of high number of tappings

3.c- To avoid the power losses,resistors have to be bypassed

4.b-No wearing parts

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