Test Instruments Flashcards

1
Q

? is a method of using light to transport information from one location to another through thin filaments of glass or plastic.
Select one:

a.
Fiber optics

b.
Internet Protocol (IP)
c.
Transmission Control Protocol (TCP)

d.
Wireless

A

A

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2
Q

Nonlinear loads are a common source of ? problems.
Select one:

a.
harmonic

b.
noise

c.
sags

d.
transients

A

A

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3
Q

Improper phase sequence (phase reversal) is the changing of the sequence of any two phases in a three-phase system or circuit. Improper phase sequence reverses motor rotation.
Select one:
True
False

A

True

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4
Q

It is important to check a high voltage detector on a known (energized) voltage source or ? verifier before taking a measurement on an unknown voltage source.
Select one:

a.
energized fault

b.
high voltage

c.
piezo

d.
visual

A

C

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5
Q

Noncontact high voltage ? are designed to be used as current clamps but have open ends (a U shape) to allow safer current measurements.
Select one:

a.
ammeters

b.
piezo verifier

c.
verifiers

d.
voltmeters

A

A

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6
Q

Insulation has the lowest resistance when first placed into service on conductors and electrical devices.
Select one:
True
False

A

False

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7
Q

Megohmmeters and some hipot testers are also called ? .
Select one:

a.
capacitance testers

b.
insulation testers

c.
thumpers

d.
voltmeters

A

B

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8
Q

A(n) ? is a device that produces electricity when two different metals that are joined together are heated. The voltage produced is proportional to the applied heat (measured temperature).
Select one:

a.
hygrometer

b.
tachometer

c.
thermocouple

d.
thermometer

A

C

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9
Q

Photo tachometers are used for what kinds of applications?
Select one:

a.
A photo tachometer is used in applications in which the rotating object can be reached or touched.

b.
A photo tachometer is used in applications in which the rotating object cannot be reached or touched.

c.
A photo tachometer is used to measure linear speeds.

d.
All of the above.

A

B

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10
Q

A chip is an integrated circuit that is packaged in an insulating polymer case and is typically used to create digital circuits.
Select one:
True
False

A

True

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11
Q

The highest failure rate for most equipment occurs during the ? period.
Select one:

a.
break-in

b.
useful life

c.
wear-out

d.
none of the above

A

A

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12
Q

More Frequency, More ?.

A

Crosstalk

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13
Q

We can use ? multimeter to test for simple power interruptions.

A

MIN/MAX

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14
Q

Power factor is equal to Volt-amps divided by ?.

A

Watts

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15
Q

Power Factor is equal to apparent power divided by ?.

A

True Power

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