Final answer:
To check a motor for shorts or open windings, a multimeter is used to measure resistance across the windings.
Step-by-step explanation:
To bench check a motor for shorts or open windings, you would use a multimeter. A multimeter is capable of measuring resistance, or continuity, which is essential for determining whether there are any shorts or open circuits within the motor's windings.
To check for these faults, you would set the multimeter to measure resistance (ohms), then measure across the motor windings. Neither tachometers, which measure rotational speed, nor ammeters and voltmeters, which measure current and voltage respectively, are appropriate for this specific task.
In terms of electrical measuring instruments, it is important to use them properly to avoid damaging the equipment. A volmeter must be connected in parallel with the component to measure voltage, not in series, as this would impede current flow.