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NETA 2 > Round 1 > Flashcards

Round 1 Flashcards

1
Q

An object that is a good reflector is also a:

A

Poor emitter

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2
Q

In a power system, what would installing

capacitors accomplish?

A

Power factor correction and _______________

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3
Q

What would not significantly

reduce ground resistance?

A

Increased ground rod diameter

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4
Q

Class 4 rubber insulating gloves are proof
tested at 40,000 VAC, what is the AC max use
voltage of these gloves?

A

36,000

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5
Q

How much torque does the 41,000 RPM
turbine section of a 5kV 300 HP gas turbine
generator engine produce?

A

38 lb-ft

Help: Torque = HP x 5252 / RPM

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6
Q

Low voltage is defined as a class of nominal

A

1000

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7
Q

The unit of electromotive force is the:

A

Volt

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8
Q

What is the expected contact-resistance
measurement for a 4000A 480V air circuit
breaker in good condition?

A

8-24 microhms

less than 30 microhms

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9
Q

Which device functions when the ratio of
voltage to frequency (V/Hz) exceeds a preset
value?

A

24

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10
Q

Class C hard hats are a good choice for

protection from electrical hazards.(T/F)

A

False

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11
Q

What is the minimum acceptable PI value for
a newly installed 200kW emergency generator
per NETA standards?

A

2.0

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12
Q

Switchboards, switchgear, and panelboards
used as service equipment on high-impedance
grounded neutral systems are required to be
provided with a main bonding jumper(T/F)

A

False

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13
Q

What is the expected torque (pound-feet)

value of a 3/8” Grade 5 bolt?

A

20

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14
Q

Plastic and glass covers in electrical

enclosures are transparent to infrared radiation.(T/F)

A

False

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15
Q

What is the Limited Approach Boundary for

a 13.2kV switchgear?

A

5 feet

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16
Q

What are two relatively new risk assessments?

A

Human error and Hierarchy of risk control methods

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17
Q

Most probable cause of corona:

A

Moisture

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18
Q

In the National Electrical Code, Article _____
contains tables that are used to determine the
proper size of a conductor.

A

310

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19
Q

Meter Sockets and meter disconnect
switches should generally be connected on the
load side of a service disconnecting means.(T/F)

A

False

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20
Q

Which instrument is used to locate a 15kV

underground cable fault?

A

Time domain reflectometer

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21
Q

When is transformer polarity of concern?

A

When multiple sets of

primary and secondary windings are interconnected

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22
Q

A face shield has an 11cal/cm^2 rating

imprinted on it. What does this rating mean?

A

You have a 50% chance of

receiving a second degree burn on bare skin.

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23
Q

What is the NETA recommended acceptance
test voltage for a 15 minute withstand test on a
single-phase, 15kV line sectionalizer with a
rated impulse withstand voltage of 95kV?

24
Q

Negative Phase sequence relays are used to

protect _____ from phase to phase faults.

A

Generators

25
Rod and pipe grounding electrodes must be at least _____feet in length in accordance with the NEC.
8
26
In general, the most important point to monitor in regards to the operation of transformers is _______?
Temperature
27
How much energy does a 2.5MW turbine | produce in one complete cycle?
0.012 KWh
28
Which of the following refers to the current a switchboard or protective device can carry continuously without deterioration and without exceeding temperature rise limits?
Ampere rating
29
The vacuum bottle Integrity test provides an | indication of:
The current state of the vacuum | bottle
30
The continuous current rating of a circuit | breaker will be determined by the ______.
Sensor rating/tap, with long-time | delay setting
31
A wye-delta transformer has a primary line voltage of 7200 V and a secondary voltage of 360 V. What is the turns ratio?
11.55:1
32
The applied DC voltage on a cable hipot test | is ______ that for an AC test.
Higher than
33
In HV circuit breakers, the steady state contact stroke minus the rebound distance is defined as:
Minimum dynamic contact gap
34
Filters are used to reduce what?
Harmonics
35
When arcing occurs in SF6 , what is one | hazardous byproduct?
Metal fluorides
36
An object that is a poor emitter is also a:
Good reflector
37
Increased ground rod diameter significantly reduces ground resistance.(T/F)
False
38
What color label does a class 4 rubber insulating glove have?
Orange
39
What color label does a class 3 rubber insulating glove have?
Green
40
What color label does a class 2 rubber insulating glove have?
Yellow
41
What color label does a class 1 rubber insulating glove have?
White
42
What color label does a class 0 rubber insulating glove have?
Red
43
Class 3 rubber insulating gloves are proof tested at 30,000 VAC, what is the AC max use voltage of these gloves?
26,500
44
Class 2 rubber insulating gloves are proof tested at 20,000 VAC, what is the AC max use voltage of these gloves?
17,000
45
Class 1 rubber insulating gloves are proof tested at 10,000 VAC, what is the AC max use voltage of these gloves?
7,500
46
Class 0 rubber insulating gloves are proof tested at 5,000 VAC, what is the AC max use voltage of these gloves?
1,000
47
How much torque does the 29,000 RPM turbine section of a 13.2kV 600 HP gas turbine generator engine produce?
109 lb-ft Help: Torque = HP x 5252 / RPM
48
Class E hard hats are a good choice for | protection from electrical hazards.(T/F)
True
49
What is the minimum acceptable PI value for a newly installed 500kW emergency generator per NETA standards?
2.0
50
What is the expected torque (pound-feet) | value of a 1/2" Grade 7 bolt?
68
51
What is the Limited Approach Boundary for | a 138 kV bus?
10 feet
52
What is the NETA recommended acceptance test voltage for a 15 minute withstand test on a single-phase, 38kV line sectionalizer with a rated impulse withstand voltage of 150kV?
103kVDC
53
How much energy does a 1.2MW turbine | produce in one complete cycle?
0.006 kWh
54
A wye-delta transformer has a primary line voltage of 4800 V and a secondary voltage of 360 V. What is the turns ratio?
7.70:1
55
The applied AC voltage on a cable hipot test | is ______ that for an DC test.
Lower than

NETA 2 (3 decks)

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