Prepare for the essential 636 Period 3 Motor Final Test with comprehensive flashcards and detailed questions. Access explanations and hints for each question to ace your exam!

Multiple Choice

According to motor nameplate data, it is acceptable for the motor to draw 5.6 amps while running at 460 volts.

The running current a motor should draw at the rated voltage is what the nameplate lists as full-load amps. That same plate may also show a much higher starting current (inrush) or locked-rotor current. In normal operation at 460 V, the motor’s current should stay around the running (full-load) value, not a much higher startup value. Seeing 5.6 A at 460 V is typically not the running current you would expect for normal operation; it’s usually associated with startup inrush. Since nameplate data defines the allowed running current for normal operation, stating that drawing 5.6 A while running is acceptable contradicts that specification. If the nameplate’s running current is lower than 5.6 A, then 5.6 A would indicate overload; if the nameplate’s running current is exactly 5.6 A, it would be acceptable only as the running current, not as startup. In practice, startup current is higher and not considered the normal running current. So the statement is not correct.

The running current a motor should draw at the rated voltage is what the nameplate lists as full-load amps. That same plate may also show a much higher starting current (inrush) or locked-rotor current. In normal operation at 460 V, the motor’s current should stay around the running (full-load) value, not a much higher startup value.

Seeing 5.6 A at 460 V is typically not the running current you would expect for normal operation; it’s usually associated with startup inrush. Since nameplate data defines the allowed running current for normal operation, stating that drawing 5.6 A while running is acceptable contradicts that specification. If the nameplate’s running current is lower than 5.6 A, then 5.6 A would indicate overload; if the nameplate’s running current is exactly 5.6 A, it would be acceptable only as the running current, not as startup. In practice, startup current is higher and not considered the normal running current. So the statement is not correct.