Chapter 6: Electrical Measurements – Meters
MULTIPLE CHOICE
1. A(n) ____ is a type of meter used to measure current in a circuit.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
analog meter
2. A(n) ____ is used to measure the voltage (difference of potential) between two points in a circuit.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
analog meter
3. Resistance is measured with a(n) ____.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
analog meter
4. As a note of caution, one must always turn off the power before connecting a(n) ____ to a circuit.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
analog meter
5. A(n) ____ must be connected in series with a circuit.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
digital meter
6. A(n) ____ must be connected in parallel with a circuit.
a.
ammeter
c.
ohmmeter
b.
voltmeter
d.
digital meter
7. A(n) ____ circuit has infinite resistance because no current flows through it.
a.
open
c.
short
b.
closed
d.
complete
8. A(n) ____ circuit has zero ohms of resistance because current flows through it without developing a
voltage drop.
a.
open
c.
short
b.
closed
d.
complete
9. A(n) ____ circuit indicates a low resistance.
a.
open
c.
short
b.
closed
d.
complete
10. ____ are read from right to left and have nonlinear scales.
a.
Ammeters
c.
Ohmmeters
b.
Voltmeters
d.
Analog meters
COMPLETION
1. To eliminate the need for several meters, the voltmeter, ammeter, and ohmmeter can be combined into
a single instrument called a(n) ____________________.
2. Another way to measure current that does not require opening the circuit is to use a
____________________ of a known value in the circuit.
3. An analog ____________________ must be calibrated before use to compensate for battery
deterioration.
SHORT ANSWER
1. List three advantages of DMMs over VOMs.
2. List three disadvantages of a DMM
