Test Instruments and definitions

The resistance of test leads must be less than _____.

1 Ω

When using a test instrument with test leads, in what order should the leads be connected?

First, connect the ground test lead (black); then connect the voltage test lead (red).

For maximum safety, personal protective equipment and safety requirements for test instrument procedures must be followed as specified in _____?

NFPA 70E, OSHA Standard Part 1910, and other applicable safety mandates.

The _____ feature on a digital multimeter allows a meter to automatically adjust to a higher range setting if the set range is not high enough for the application.

autoranging

The frequency that controls the number of times solid-state switches in the inverter section of a pulse width modulated VFD turn ON & OFF per second

carrier frequency

In theory, a _____ will disappear at absolute zero.

gas

A(n) electrical warning signal word is a word used to indicate a _____ location and conditions that could result in death or serious personal injury from an electrical shock if proper precautions are not taken.

high voltage

All other units of measure are defined and compared to the four basic measurements of: _____?

length, weight, time, and temperature

The Romans' refined distance traveled to a unit of length called the _____.

mile

Never touch any part of an electrical shock victim's body when it is in contact with the circuit. When the circuit cannot be turned OFF, use any _____ device to free the person.

nonconducting

The metric system adopted the _____ as the standard unit of time measurement.

second

The life expectancy of a test instrument depends on how ______.

the meter is used, taken care of, and how well the meter is made.

Only a meter marked "_____" can be used when taking a measurement on a circuit that includes solid-state components that distort the shape of AC sine waves (motor drives, PLCs, computers, and printers).

true RMS

When the test leads of a test instrument or meter are connected to the amperage jacks, the resistance of the meter is _____?

very low

A _____ signal word is a word used to indicate a potentially hazardous situation which, if not avoided, could result in death or serious injury.

warning

True or False: Digital test instruments are less susceptible to noise than analog test instruments.

False

True or False: Extra care must be provided to digital test instruments because their movements are susceptible to damage from shock.

False

True or False: Grounding is the connection of all exposed non-current-carrying metal parts to the neutral conductor.

False

True or False: The basic subunit of the ancient Egyptians' royal cubit stone is the span.

False

An approach limit at a distance from exposed live parts within which a person could receive a second degree burn if an electrical arc flash were to occur

Flash Protection Boundary

Series

Generally speaking, should an ammeter be connected in series or in parallel with the component it's measuring current through?

Who can remove a lockout/tagout? I. Only the authorized person who installed the lockout/tagout. II. Only supervisory personnel may remove a lockout/tagout. III. In an emergency, only supervisory personnel may remove a lockout/tagout. IV. In an emergency and upon notification of the lockout/tagout person, only supervisory personnel may remove a lockout/tagout.

I. and IV.

_____ is the process of removing the source of electrical power and installing a lock that prevents the power from being turned ON.

Lockout

The _____ is a federal act that requires all employees to provide a safe environment for employees.

OSH Act

The meter was defined as 1/10,000,000 of the distance of the meridian passing through _____ from the North Pole to the equator.

Paris

_____ is/are an eye protection device with special impact-resistant glass or plastic lenses, reinforced frames, and side shields.

Safety glasses

True or False: Always ensure that the jack position of the test leads corresponds to the setting of the meter function and selector switch before taking a measurement.

True

True or False: Analog test instruments are less accurate than digital test instruments.

True

True or False: Both Fahrenheit and Celsius thermometers have scales based on the freezing and boiling points of water.

True

True or False: Clothing made of synthetic materials such as nylon, polyester, or rayon, alone or combined with cotton, must never be worn as synthetic materials burn and melt to the skin.

True

True or False: Electricity is the number one cause of fires.

True

True or False: The Babylonians believed the year consisted of 360 days. The 360-day year led to fractions such as 1/60 which are still used in astronomy and for the minutes and seconds of the day.

True

True or False: The main reason for the increase in the use of digital electronic technology in metering is that digital meters have far greater measuring capabilities than analog meters, and the digital circuitry takes up less space.

True

True or False: The primary purpose of rubber insulating gloves and leather protectors is to insulate hands and lower arms from possible contact with live conductors.

True

_____ differs with the pull of gravity, and the pull of gravity varies slightly across the surface of the earth according to latitude.

Weight

A(n) _____ is an explosion that occurs when the air surrounding electrical equipment becomes ionized and conductive.

arc blast

A(n) _____ is an extremely high-temperature discharge produced by an electrical fault in the air.

arc flash