Question 304Electricity & Electronics - QMED
70% to passAs shown in the illustration, which of the following conditions will occur as a result of a momentary loss of power? Illustration EL-0017
Athe "off-run" selector switch will re-open, necessitating a manual restarting of the motor.
BThe normally closed OL relay contacts will open requiring a manual reset, necessitating a manual restarting of the motor.
CThe motor will automatically restart when power is restored.
DThe disconnect switch (DS) will re-open, necessitating a manual restarting of the motor.
AI Explanation
The correct answer is C) The motor will automatically restart when power is restored. This is because in a momentary loss of power scenario, the motor will automatically restart when power is restored, without requiring any manual intervention. The motor's control system is designed to handle such temporary power outages and resume operation without the need for a manual restart. The other options are incorrect because: A) the "off-run" selector switch will not re-open, B) the normally closed OL relay contacts will not open, and D) the disconnect switch (DS) will not re-open. These actions would require additional manual steps to restart the motor, which is not the case in a momentary loss of power situation.
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