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Exam 6: Electrical Quantity Measurement

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Question 1

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It is customary to use fractions rather than common decimals to record the values of meter readings.

A) True
B) False

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Question 2

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For the protection of a meter, the range should never be exceeded.

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B) False

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Question 3

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Always connect voltmeters perpendicular to a load or source.

The skill of interpreting various ____ scales is a necessary and valuable asset to any technician.

The four basic circuit concepts are voltage, current, ____, and watts.

When ____ are applied to a circuit, be sure that the power is turned off.

When meters with multiple ranges are employed, protect the meter by switching to the ____ range first to prevent overloading.

Most ohmmeters have the numbers of their scales arranged from ____.

A dual-range ____ generally has three terminals for making the connections labeled COM, 3 A, and 30 A.

Traditional meters that have a pointer moving across the face of a scale (similar to the speedometer in many cars) are classified as analog meters.

Readings from analog meters are generally limited to ____-digit accuracy.

The DMM (dialog multimeter) directly displays the numerical results of a measurement.

The proper techniques of connecting electrical meters should be demonstrated and practiced in a laboratory setting.

The range of a meter is the maximum amount of the instrument at full-scale deflection.

Always connect ammeters ____.

Wattmeters generally have a range switch indicating multiplier values, such as X 1 or X 100, which means that each reading taken on the scale must be multiplied by the value indicated on the range switch.

Most electrical measuring devices, from panel meters for permanent installations to portable test instruments, have made use of analog scales.

When reading an analog dial, the observer's line of sight should be ____ the surface of the scale.

Throughout most of the twentieth century, one of the widely used portable test instruments has been the ____.

On a VOM, the correct alignment is achieved when the mirror image of the pointer disappears behind the pointer itself.