Lesson 6: Power Generation and Distribution

In North America, power is generated at a frequency of   ?  .

• 25 Hz

• 50 Hz

• 60 Hz

• 120 Hz

A(n)   ?   is a device that indicates whether two AC sources to be connected in parallel are in the correct phase relationship.

• alternator

• potentiometer

• rotor

• synchroscope

The   ?   is the voltage measured line-to-line.

• line current

• line voltage

• winding current

• winding voltage

The most efficient way to send electric power over transmission lines is at the lowest current possible.

• True

• False

The   ?   is the current flow through the individual windings.

• line current

• line voltage

• winding current

• winding voltage

A landfill generator runs on the methane gas created by decomposing trash.

• True

• False

The power in a single-phase circuit drops to zero   ?   every cycle.

• once

• twice

• three times

• four times

In an electric generating power plant, all generators must be connected in   ?  .

• chain

• line

• parellel

• series

The   ?   is the voltage measured across the windings.

• line current

• line voltage

• winding current

• winding voltage

A   ?   produces energy when a rotating coil cuts through magnetic flux.

• generator

• motor drive

• synchroscope

• transformer