Name: 
 

Chapter 8



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

1. 

A voltmeter is designed to be connected in ____ with the circuit to be measured.
a.
parallel
b.
series
c.
either a or b
 

2. 

When the selector switch of a meter is turned to a new scale, steps of ____ are inserted in the circuit to increase the range or are removed from the circuit to decrease the range.
a.
amperage
c.
voltage
b.
resistance
d.
wattage
 

3. 

The ____, unlike the voltmeter, is a very low-impedance device.
a.
ammeter
b.
ohmmeter
c.
wattmeter
 

4. 

An ammeter is used to measure current and must be connected in ____ with the load.
a.
parallel
b.
series
c.
either a or b
 

5. 

A(n) ____ is a low-resistance device used to conduct most of the circuit current away from the meter movement.
a.
voltage shunt
c.
wattage shunt
b.
ammeter shunt
d.
voltage rectifier
 

6. 

When a toroid current transformer is used to measure AC current, the main power line acts as the ____ and is considered to be one turn.
a.
secondary winding
c.
hollow core frame
b.
primary winding
d.
AC rectifier
 

7. 

If a clamp-on ammeter is clamped around more than one power line of a 240 V circuit, the meter will read ____ volts.
a.
0
c.
240
b.
120
d.
480
 

8. 

AC/DC ammeters use the ____ effect as their basic principle of operation.
a.
Smith
c.
Hall
b.
Jones
d.
Oates
 

9. 

The ____ is used to measure resistance.
a.
ammeter
c.
voltmeter
b.
ohmmeter
d.
wattmeter
 

10. 

The input impedance used to limit the flow of current through digital meters is accomplished by using ____.
a.
field effect transistors
c.
ammeter shunts
b.
toroid current transformers
d.
none of the above
 



 
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