Ch 15-21 multiple choice

A coal-burning power plant is an example

• Fossil fuel

• Power generating

• Hydroelectric

• Nuclear

A three-phase generator has coils spaced_____apart

• 120 degree

• 90 degree

• 180 degree

• 270

If the peak value of an alternating current is 10 amps, what is the effective value

• 7.07 amp

• 10 amps

• 70 amps

• 100 amps

If the peak value of an alternating current is 20 volts, what is the average value

• 12.74 volts

• 20 volts

• 10 volts

• .12 volts

If the period of a waveform is 2 seconds, what is its frequency

• 1/2 Hz

• 2 Hz

• 1 Hz

• 3 Hz

In a hydroelectric plant, the energy created by____ is converted, via turbines and generators, into electrical energy

• Falling water

• Heat

• Steam

• Light

Most meters are designed to provide______values for all ac measurements

• Effective

• Ineffective

• Period

• Average

Nuclear power plants heat water using the heat generated by the fission of which type of fuel

• Uranium

• Fossil

• Gas

• Oil

Slip rings are used in an ac generator in place of which component of a dc

• Commutator

• Brushes

• Generator

• Circuit

The frequency of voltage produce in an ac generator is measured in which unit

• Hertz

• Seconds

• Voltage

• Degrees