Deck 6: Electrical Quantity Measurement

Question 1

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

Answer 1

False

Question 2

Always connect ammeters ____.

A)with the pointer at zero
B)with the pointer downhill
C)in series
D)in a laboratory setting

Answer 2

C

Question 3

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

Answer 3

True

Question 4

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

A)top to bottom
B)right to left
C)left to right
D)bottom to top

Question 5

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

A)dialog
B)ampere
C)digital
D)analog

Question 6

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.

Question 7

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

A)voltmeters
B)amperemeters
C)wattmeters
D)ohmmeters

Question 8

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

Question 9

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

A)VM (short for volt-milliamperes)
B)WOM (short for watt-ohm-milliamperes)
C)VOM (short for volt-ohm-milliamperes)
D)WM (short for watt-milliamperes)

Question 10

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

A)highest
B)lowest
C)middle
D)closest

Question 11

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

A)induction
B)resistance
C)friction
D)conduction

Question 12

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

Question 13

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

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

Question 14

Always connect voltmeters perpendicular to a load or source.

Question 15

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

Question 16

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

A)two
B)three
C)four
D)six

Question 17

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

Question 18

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

Question 19

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

A)parallel to
B)level with
C)just to the left of
D)perpendicular to

Question 20

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.