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___ voltage reduces the available starting torque on 3-phase and single phase motors, such as water pumps and water coolers.

It is a common industry practice to ___ a transformer to avoid having an outage.

A current transformer should always have its secondary ___ when not connected to an external load.

A 2-phase system is a power supply consisting of two phases that are ___° out of phase.

A ___ transformer is one of the transformers in a T-connected transformer bank and is provided with a 50% voltage tap.

For autotransformers, when the current is 9 A or more, the overcurrent protection device is allowed to be rated at not more than ___% of the full-load current.

In North America, virtually all power systems now operate at 60 Hz.

When determining the proper wiring connections to develop a particular voltage, a technician requires knowledge of the ___.

An interconnected wye connection is a method of wiring transformers where two separate windings are interconnected on each phase in a linear fashion.

In some older steel mills, some ___ Hz motors are still used to move the hot bar from the rolling dies and send it to the shear.