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construction seminars > Untitled Deck > Flashcards

Untitled Deck Flashcards

1
Q

What does the face of a utility pole refer to?

A

The concave side

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2
Q

What is the minimum height for the top of a conduit system below the top of the rails of a street railway?

A

36 inches

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3
Q

What is the minimum height for the top of a conduit system below the top of the rails of a railroad?

A

60 inches

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4
Q

What type of equipment is installed in a substation that refers to SF6?

A

Circuit breaker

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5
Q

What does a wattmeter measure?

A

Power consumed

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6
Q

What voltage classification does a transmission line of 345 kV fall under?

A

EHV

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7
Q

What indicates it is safe to connect lines when phasing out conductors?

A

Voltmeter reads 0 volts

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8
Q

What is the minimum separation between a communications cable and a 7.2 kV line in a manhole?

A

6 inches

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9
Q

What does ACSR stand for?

A

Aluminum conductor steel reinforced

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10
Q

What will aerial conductors with scratches and nicks experience?

A

High corona

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11
Q

According to OSHA, when must fall protection be used?

A

For employees working at elevated locations more than 4 feet

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12
Q

What does OPT-GW stand for?

A

Optic fiber ground wire

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13
Q

What component in a loudspeaker accomplishes the transduction of electrical signals into sound waves?

A

Driver

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14
Q

Which method is NOT acceptable for lowering the resistance of a grounding rod?

A

Remove water

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15
Q

What is the maximum number of overcurrent devices permitted in a lighting and receptacle panelboard?

A

42

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16
Q

What type of cable consists of four unshielded twisted-pair rated at 20 MHz?

A

Category 4

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17
Q

What is the symbol for ohms?

A

Ω

18
Q

How should wood poles next to poles supporting long spans be positioned?

A

Face away from the long span

19
Q

What is a wire running from the attachment near the top of the pole to a rod and anchor installed in the ground called?

A

Anchor guy or down guy

20
Q

How many channels does a T1 line have?

A

24

21
Q

What is the rating of Category 3 cable wire?

A

100 MHz

22
Q

What device is a microphone connected to?

A

Mixer

23
Q

How should bundled cables be pulled?

A

Simultaneously

24
Q

What is the outer protective coating on a cable referred to as?

A

Jacket

25
Q

What are the characteristics of a digital signal?

A

Pulse, no pulse

26
Q

What are the characteristics of an analog signal?

A

Voltage that is variable with time

27
Q

What device is used to measure resistance on a grounding rod?

A

Digital resistance tester

28
Q

What is the rating of Category 5 cable?

A

100 MHz

29
Q

What should backfill within 6 inches of the conduit be free of?

A

Solid material greater in maximum dimension than 4 inches

30
Q

What is the required separation between conduit systems for communications conductors and supply systems?

A

12 inches of well tamped earth

31
Q

What is an example of a point to point network?

A

Two computers directly connected to one another

32
Q

What is an example of a star network?

A

A collection of links with a common node

33
Q

What is an example of a bus network?

A

Multiple computers sharing a common line

34
Q

What is a ring network?

A

A network in which each computer is connected to two other computers forming a circle

35
Q

What are tie wires normally made of?

A

Annealed wire

36
Q

What must cables located in manholes do?

A

Be tagged

37
Q

At what voltage is most electric energy generated?

A

Between 13.2 - 24 kV

38
Q

What operates a reed switch?

A

A magnet

39
Q

What happens when an electric current leaves its intended path?

A

The circuit is shorted

40
Q

Which device converts AC to DC with no moving parts?

A

Rectifier

41
Q

What is the relationship between the rate of flow of current and resistance?

A

Inversely proportionate

construction seminars (7 decks)

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