Name: 
 

Chapter 13



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

1. 

When working with vectors, ____ degrees is indicated by a horizontal line.
a.
0
c.
180
b.
90
d.
270
 

2. 

While vectors can be added, subtracted, multiplied, and divided, in electrical work ____ is the only function needed.
a.
addition
c.
multiplication
b.
division
d.
subtraction
 

3. 

To add vectors that are ____ degrees apart, subtract the magnitude of the larger vector from the magnitude of the smaller vector.
a.
0
c.
180
b.
90
d.
270
 

4. 

One of the primary laws of series circuits is that the ____ must be the same in any part of the circuit.
a.
resistance
c.
wattage
b.
voltage
d.
current
 

5. 

True power for a resistive-inductive circuit can be computed by using any of the watts formulas with pure ____ parts of the circuit.
a.
inductive
c.
reactive
b.
capacitive
d.
resistive
 

6. 

VARs is the amount of ____ power in a resistive-inductive circuit.
a.
resistive
c.
apparent
b.
inductive
d.
reactive
 

7. 

VARs represents the product of volts and amps that are ____ phase with each other.
a.
90 degrees out of
c.
270 degrees out of
b.
180 degrees out of
d.
in
 

8. 

The ____ power of a resistive-inductive series circuit can be found when a voltmeter and ammeter are used to measure the circuit voltage and current and then these measured values are multiplied together.
a.
reactive
c.
wattless
b.
apparent
d.
quadrature
 

9. 

In a resistive-inductive circuit, power factor can be computed by dividing the voltage drop across the resistor by the ____.
a.
circuit amperage
c.
total circuit voltage
b.
total circuit resistance
d.
circuit volt-amps
 

10. 

The ____ of angle theta is the power factor.
a.
sine
c.
tangent
b.
cosine
d.
cotangent
 



 
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