Deck 4: Test and Measurement Instruments Used in Residential Wiring

Question 1

A voltmeter is used to measure __________.

A) ammeter
B) megohms
C) continuity
D) None of the above

Answer 1

D

Question 2

One megohm is equal to __________ ohms.

A) one hundred
B) one thousand
C) one million
D) one billion

Answer 2

C

Question 3

A voltage tester is considered to be a very accurate meter when compared to a voltmeter.

Answer 3

False

Question 4

Kilowatt-hour meters are used to measure __________.

A) electrical power
B) electrical energy
C) large amounts of voltage
D) large amounts of amperage

Question 5

An instrument used to measure values of resistance is called a(n) __________.

A) ammeter
B) ohmmeter
C) voltmeter
D) wattmeter

Question 6

A meter that uses a moving pointer or needle to indicate a value on a scale is called a(n) __________ meter.

A) LCD
B) analog
C) digital
D) parallax

Question 7

A Wiggy is an electrical trade name for a __________.

A) solenoid type voltmeter
B) solenoid type voltage tester
C) solenoid type ammeter
D) solenoid type ohmmeter

Question 8

Electrical power is measured in __________.

A) amps
B) ohms
C) volts
D) watts

Question 9

__________ are load types where the load impedance is not constant.

A) Harmonics
B) Linear loads
C) Non-linear loads
D) True RMS

Question 10

A break in an electrical conductor or cable is called a(n) __________ circuit.

A) linear
B) non-linear
C) open
D) short

Question 11

A(n) __________ is used to determine the amount of resistance to the earth through a grounding electrode.

A) multimeter
B) ground resistance meter
C) megger
D) wiggy

Question 12

A voltage tester indicates only approximate voltage measurements.

Question 13

The letters VOM are an abbreviation for volt, ohm, and __________.

A) milliamps
B) meter
C) milliammeter
D) measurement

Question 14

Which of the following test instruments must be used only when the circuit in not energized?

A) Ammeter
B) Ohmmeter
C) Voltmeter
D) Wattmeter

Question 15

An analog ohmmeter scale is read from left to right.

Question 16

__________ meters provide accurate measurements of AC values in environments where the basic AC waveform is distorted.

A) Harmonic
B) Linear load
C) Non-linear load
D) True RMS

Question 17

A(n) __________ can indicate that voltage is present on a circuit without actually being connected to the circuit.

A) wiggy
B) ohmmeter
C) ground resistance tester
D) non-contact voltage tester

Question 18

Never work on energized electrical equipment unless it is absolutely necessary.

Question 19

When using measuring instruments, be sure to use an instrument that has a rating less than the highest value of electricity that you expect to be measuring.

Question 20

__________ are frequencies that are multiples of the fundamental 60 Hertz frequency.

A) Harmonics
B) Linear loads
C) Non-linear loads
D) True RMS

Question 21

The _________________________ meter measures the amount of electrical energy used by the dwelling electrical system.

Question 22

A ________ measures electrical consumption in more detail than a conventional kWH meter and has the ability to communicate that information back to the local electric utility for monitoring and billing purposes.

A) true RMS meter
B) voltage tester
C) voltmeter
D) smart meter

Question 23

The abbreviation for a digital multimeter is ____________________.

Question 24

The two basic types of ammeters are 'in-line' and ____________________.

Question 25

A voltmeter is connected in ____________________ with the circuit or component being tested.

Question 26

Never attach a continuity tester to a circuit that is energized.

Question 27

A ____________________ tester is a device used to indicate whether there is a continuous path for current to flow in an electrical circuit or electrical device.

Question 28

A VOM can measure DC and AC voltages, DC and AC current, and ____________________.

Question 29

A(n) _________________________ is a break in an electrical conductor or cable.

Question 30

An ohmmeter is used to measure the ____________________ of a circuit or circuit component.

Question 31

When using an analog ohmmeter as a continuity tester, a reading of zero indicates a(n) _________________________.

Question 32

A(n) ______________ ammeter surrounds the conductor, picks up the strength of the magnetic field that is set up around the conductor, and converts it into a proportional value of current.

Question 33

A(n) ____________________ is designed to measure the amount of current flowing in a circuit.

Question 34

Excessive current draw results in lower efficiency and wasted energy. An ____________________ can be used to determine if an electrical load is drawing more current than necessary.

Question 35

The positive or negative direction of DC voltage and current is referred to as ____________________.

Question 36

A/an _______ is a symbol used on some electrical meters to indicate where a selector switch must be set so the meter can measure the correct type of electrical quantity.

A) hash mark
B) icon
C) analog
D) check mark

Question 37

Always read and follow any operating instructions that come with a meter.

Question 38

Safety glasses are only required when using test and measurement instruments if your supervisor tells you to wear them.

Question 39

In-line ammeters are always connected in ______________ with the circuit or circuit component being tested.

Question 40

One ____________________-hour is equal to one thousand watt-hours.

Question 41

List at least 5 rules to follow regarding the proper care and maintenance of measuring instruments.

Question 42

A relatively new type of test tool, often called a ____________________, typically can measure alternating current amperage, both direct current and alternating current voltage, and resistance, which eliminates the need to carry around several separate test and measurement instruments.

Question 43

Explain how smart kilowatt-hour meters can be useful.

Question 44

Explain what a Megohmmeter is used for.