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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?

A

53kVDC

24
Q

Negative Phase sequence relays are used to

protect _____ from phase to phase faults.

A

Generators

25
Q

Rod and pipe grounding electrodes must be
at least _____feet in length in accordance with
the NEC.

A

8

26
Q

In general, the most important point to
monitor in regards to the operation of
transformers is _______?

A

Temperature

27
Q

How much energy does a 2.5MW turbine

produce in one complete cycle?

A

0.012 KWh

28
Q

Which of the following refers to the current a
switchboard or protective device can carry
continuously without deterioration and without
exceeding temperature rise limits?

A

Ampere rating

29
Q

The vacuum bottle Integrity test provides an

indication of:

A

The current state of the vacuum

bottle

30
Q

The continuous current rating of a circuit

breaker will be determined by the ______.

A

Sensor rating/tap, with long-time

delay setting

31
Q

A wye-delta transformer has a primary line
voltage of 7200 V and a secondary voltage of
360 V. What is the turns ratio?

A

11.55:1

32
Q

The applied DC voltage on a cable hipot test

is ______ that for an AC test.

A

Higher than

33
Q

In HV circuit breakers, the steady state
contact stroke minus the rebound distance is
defined as:

A

Minimum dynamic contact gap

34
Q

Filters are used to reduce what?

A

Harmonics

35
Q

When arcing occurs in SF6 , what is one

hazardous byproduct?

A

Metal fluorides

36
Q

An object that is a poor emitter is also a:

A

Good reflector

37
Q

Increased ground rod diameter significantly reduces ground resistance.(T/F)

A

False

38
Q

What color label does a class 4 rubber insulating glove have?

A

Orange

39
Q

What color label does a class 3 rubber insulating glove have?

A

Green

40
Q

What color label does a class 2 rubber insulating glove have?

A

Yellow

41
Q

What color label does a class 1 rubber insulating glove have?

A

White

42
Q

What color label does a class 0 rubber insulating glove have?

A

Red

43
Q

Class 3 rubber insulating gloves are proof
tested at 30,000 VAC, what is the AC max use
voltage of these gloves?

A

26,500

44
Q

Class 2 rubber insulating gloves are proof
tested at 20,000 VAC, what is the AC max use
voltage of these gloves?

A

17,000

45
Q

Class 1 rubber insulating gloves are proof
tested at 10,000 VAC, what is the AC max use
voltage of these gloves?

A

7,500

46
Q

Class 0 rubber insulating gloves are proof
tested at 5,000 VAC, what is the AC max use
voltage of these gloves?

A

1,000

47
Q

How much torque does the 29,000 RPM
turbine section of a 13.2kV 600 HP gas turbine
generator engine produce?

A

109 lb-ft

Help: Torque = HP x 5252 / RPM

48
Q

Class E hard hats are a good choice for

protection from electrical hazards.(T/F)

A

True

49
Q

What is the minimum acceptable PI value for
a newly installed 500kW emergency generator
per NETA standards?

A

2.0

50
Q

What is the expected torque (pound-feet)

value of a 1/2” Grade 7 bolt?

A

68

51
Q

What is the Limited Approach Boundary for

a 138 kV bus?

A

10 feet

52
Q

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?

A

103kVDC

53
Q

How much energy does a 1.2MW turbine

produce in one complete cycle?

A

0.006 kWh

54
Q

A wye-delta transformer has a primary line
voltage of 4800 V and a secondary voltage of
360 V. What is the turns ratio?

A

7.70:1

55
Q

The applied AC voltage on a cable hipot test

is ______ that for an DC test.

A

Lower than

NETA 2 (3 decks)

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