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The phase difference between the primary and secondary in a control transformer is ___°.

Autotransformer reduced-voltage starting provides the highest possible starting ___ per ampere of line current.

Variable-speed drives use current transformers to monitor the outgoing current.

A ___ transformer is a continuously adjustable autotransformer consisting of a single layer of wire wound on a toroidal core, and a carbon brush that traverses this winding.

A ___ transformer is a transformer that is used to step down the voltage to the controls and control devices of a circuit or machine.

The line voltage can be calculated by ___ the measured voltage and the turns ratio of the transformer.

When the total load connected to a control transformer exceeds the rating of the transformer, the voltage output of the transformer ___.

The size of a control transformer can be determined by adding the power requirements of the components in the control circuit.

Before selecting a control transformer, it is important to consider the ___ of a circuit.

A buck-boost transformer cannot be wired in an open delta when the load is relatively low to buck the voltage from 240 V to 208 V.