Exam 4: Test and Measurement Instruments Used in Residential Wiring

One milliampere is equal to __________ of an amp.

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

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

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

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

Electrical power is measured in __________.

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

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

An analog ohmmeter scale is read from left to right.

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.

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

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

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

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

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.

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.

Kilowatt-hour meters are used to measure __________.

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

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

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