Deck 4: Test and Measurement Instruments Used in Residential Wiring

Question 1

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

A) Harmonics
B) Linear loads
C) Nonlinear loads
D) True RMS

Answer 1

A

Question 2

A voltmeter is used to measure __________.

A) ammeter
B) mega ohms
C) continuity
D) None of the above

Answer 2

D

Question 3

Smart meters have two-way communications and are able to send and receive information to and from home owners and the electric utility company.

Answer 3

True

Question 4

Meters will become inaccurate over time and recalibration may be necessary to bring a meter back to its intended level of accuracy.

Question 5

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 6

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 7

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

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

Question 8

Always read and follow the manufacturer's instructions that are supplied with a meter.

Question 9

One milliampere is equal to __________ of an amp.

A) one-hundredth
B) one-thousandth
C) one-millionth
D) one-billionth

Question 10

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

A) Harmonic
B) Linear load
C) Nonlinear load
D) True RMS

Question 11

Clamp-on ammeters are the most used type of ammeter in residential electrical work.

Question 12

An analog ohmmeter scale is read from left to right.

Question 13

A voltage tester indicates only approximate voltage measurements.

Question 14

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

A) Harmonic loads
B) Linear loads
C) Nonlinear loads
D) True RMS loads

Question 15

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

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

Question 16

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

Question 17

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 18

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

Question 19

Ground resistance meters are used to determine the amount of current that can flow into the earth.

Question 20

Electrical power is measured in __________.

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

Question 21

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

A) linear
B) nonlinear
C) open
D) short

Question 22

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

Question 23

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

Question 24

A ________ voltage tester is used by simply bringing it in close proximity of a conductor and it will indicate whether the conductor is energized.

A) noncontact
B) contact
C) combination
D) dual action

Question 25

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

Question 26

Kilowatt-hour meters are used to measure __________.

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

Question 27

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

Question 28

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

A) digital
B) analog
C) needle
D) voltage

Question 29

The abbreviation for a digital multimeter is ____________________.

Question 30

A __________ 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 31

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) noncontact voltage tester

Question 32

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

A) receptacle
B) switch
C) continuity tester
D) voltage tester

Question 33

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

Question 34

A(n) _______ 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 35

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 36

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 37

The amount of circuit voltage that is needed to force the circuit current through the resistance of the circuit conductors and load is called _______.

A) voltage
B) amperage
C) resistance
D) voltage drop

Question 38

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 39

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 40

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

Question 41

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

Question 42

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

Question 43

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

Question 44

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

Question 45

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 46

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

Question 47

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

Question 48

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

Question 49

Explain what a meter's auto-ranging function does.

Question 50

A newer 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 51

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