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Question: 1 / 455

Which tool is used to check if the windings on an electric motor have shorted?

Voltmeter

Ammeter

Ohmmeter

The correct choice is the ohmmeter, which is specifically designed for measuring electrical resistance. When checking the windings of an electric motor for short circuits, the ohmmeter can help determine if there are any low resistance paths between the winding connections. A properly functioning winding should show a certain level of resistance, indicating it is intact. If the ohmmeter detects a very low resistance or a short (close to zero ohms), it signals that a short circuit in the windings exists.

In contrast, a voltmeter measures voltage levels, which can't directly assess winding integrity, while an ammeter measures current flow, which is more useful after a motor is powered and running. A wattmeter measures electrical power and does not provide the necessary information to check winding shorts. Thus, the ohmmeter is the appropriate and effective tool for this specific task.

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Wattmeter

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