Name: 
 

Chapter 11



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 

In the early days of electric power generation, Thomas Edison proposed powering the country with ____.
a.
low-voltage alternating current
c.
high-voltage alternating current
b.
low-voltage direct current
d.
high-voltage direct current
 

2. 

A ____ wave is one in which the voltage rises at a constant rate with respect to time.
a.
peak
c.
square
b.
sine
d.
linear
 

3. 

In a sine wave, the number of complete cycles that occur in one second is called a ____.
a.
frequency
c.
cycle
b.
hertz
d.
farad
 

4. 

____ waves are so named because the voltage at any point along the wave form is equal to the maximum, or peak, value times the sine of the angle of rotation.
a.
Linear
c.
Square
b.
Sine
d.
Triangle
 

5. 

The ____ is measured from zero to the highest value obtained in either the positive or negative direction.
a.
average
c.
peak-to-peak
b.
peak
d.
RMS
 

6. 

The ____ value must be found when a sine wave AC voltage is changed into direct current.
a.
average
c.
peak-to-peak
b.
peak
d.
RMS
 

7. 

The pulses of pulsating direct current are often referred to as ____.
a.
ripple
c.
flow
b.
current
d.
wave
 

8. 

In DC circuits, there is only one basic type of load, which is ____.
a.
inductive
c.
resistive
b.
amperage
d.
reversing
 

9. 

____ can be produced in AC circuits only when both current and voltage are either positive or negative.
a.
Watts
c.
RMS
b.
True power
d.
a or b
 

10. 

The most common frequency used in electrical generation in the United States and Canada is ____ hertz.
a.
60
c.
180
b.
90
d.
360
 



 
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