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2-2 > 2-2-1 Introduction to Test Instruments > Flashcards

2-2-1 Introduction to Test Instruments Flashcards

1
Q

All other units of measure are defined and compared to the four basic measurements of length, __?__.

A

weight, time, and temperature

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2
Q

The Romans refined distance traveled to a unit of length called the __?__.

A

mile

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3
Q

The basic subunit of the ancient Egyptians’ royal cubit stone is the span.

A

False

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4
Q

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

A

Paris

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5
Q

Mass is used as a standard instead of weight.

A

True

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6
Q

Weight is often used as a standard because it is universally constant, regardless of latitude.

A

False

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7
Q

The Babylonian calendar consisted of 360 days. This led to fractions such as 1/60 which are still used in astronomy and for the minutes and seconds of the day.

A

True

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8
Q

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

A

second

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9
Q

Both Fahrenheit and Celsius thermometers have scales based on the freezing and boiling points of __?__.

A

water

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10
Q

The absolute zero scale of centigrade is often called the __?__.

A

Kelvin

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11
Q

The signal word used to indicate a potentially hazardous situation which could result in death or serious injury is the __?__.

A

warning

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12
Q

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.

A

True

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13
Q

The main reason for the increase in the use of digital electronic technology is for greater measuring capability.

A

True

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14
Q

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.

A

True RMS

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15
Q

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.

A

Autoranging

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16
Q

Digital test instruments are less susceptible to noise than analog test instruments.

A

False

17
Q

Analog test instruments are less accurate than digital test instruments.

A

True

18
Q

When using a test instrument with test leads, the __?__ lead should be connected first.

A

ground

19
Q

For maximum safety, personal protective equipment and safety requirements for test instrument procedures must be followed, as specified in __?__, which is one of several standards.

A

NFPA 70E

20
Q

The primary purpose of rubber insulating gloves is to insulate the hands and lower arms from possible contact with live conductors.

A

True

21
Q

__?__ are an eye protection device with special impact-resistant glass or plastic lenses.

A

Safety glasses

22
Q

An arc __?__ is an explosion that occurs when the air surrounding electrical equipment becomes ionized and conductive.

A

blast

23
Q

Electricity is the number one cause of fires.

A

True

24
Q

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 victim.

A

nonconducting

25
Q

Grounding is the connection of all exposed, noncurrent-carrying metal parts to the neutral conductor.

A

False

26
Q

__?__ is the process of removing the source of electrical power and installing a lock that prevents the power from being turned on.

A

Lockout

27
Q

Lockout/Tagout is normally removed by the __?__, other than in an emergency.

A

person who installed it

28
Q

An arc flash is an extremely high-temperature ? produced by an electrical fault in the air.

A

discharge

29
Q

Clothing made of synthetic materials, such as rayon, are the only type that are to be worn when working with energized electrical circuits.

A

False

30
Q

The __?__ is a federal act that requires all employers to provide a safe environment for employees.

A

OSH Act

31
Q

The life expectancy of a test instrument depends on the __?__.

A

care of the meter

32
Q

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

A

False

33
Q

The resistance of test leads must be less than __?__.

A

1 Ohm

2-2 (5 decks)

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