Exam 27: Autotransformer Starters

Closed transition connections are usually found on standard size __________and larger starters.

In an autotransformer-type starter the timing for the time-delay relay that controls the transfer from the reduced voltage condition to full voltage is not adjustable.

In an autotransformer-type starter, autotransformers supply _________of the line voltage to the motor.

Starting transformers momentarily affect the______ .

Starting compensators using a five-pole starting contactor are classified as_________ .

Magnetic overload relays are used on large reduced voltage starters.

De-energizing the transformers while in the running position is done to conserve electrical energy.

The starting transformers are inductive loads.

Most motors are successfully started at 90 percent of line voltage.

Current transformers are used on large motor starters to step down the current so that a conventional overload relay and heater___________ may be used.