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The difference between a motor’s synchronous speed and rated full-load speed is called ____.

A diode must be replaced if a meter registers a voltage for both meter lead configurations.

The ____ function on a multimeter allows a technician to test devices that conduct current in only one direction.

A hydraulic unloader can reduce a compressor’s load on start-up.

If an in-line ammeter is accidentally connected in parallel, it may blow a fuse.

Match each of the following testing instruments with the statement that best describes it.

The from control inward method of troubleshooting starts the line voltage and moves through each switching device.

Unlike in-line ammeters, ohmmeters are connected in series with the circuit or load being tested.

The twisting force used to turn a compressor’s crankshaft is called efficiency.

An electric motor’s speed is determined by the alternating current’s frequency and the number of magnetic field poles in the stator.