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Transformers with unequal impedances can be wired to accomplish an equal division of the load.

A(n) ___ system is a control system with a grounded secondary in the control transformer.

___ 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 ___.