暗記メーカー

暗記メーカー

​
ログイン

AC Fundmentals

AC Fundmentals
25問 • 1年前
  • Maxwell Nemir
    • 通報

    問題一覧

  • 1

    All of the customer owned, three-phased motors on a distribution circuit spin in the same direction

    true

  • 2

    What is used to measure reactive power in a pure inductive circuit

    - VARs

  • 3

    Frequency

    - The number of time that a generator rotates

  • 4

    In a series circuit what remains constant throughout the the circuit?

    - Amperage

  • 5

    In a open circuit, current will not flow

    - True

  • 6

    If the phase voltage (phase-to-ground) of a Wye system is 12000 volts, what is the line voltage (phase-to-phase)?

    - 20800 volts

  • 7

    In a parallel circuit, what remains constant throughout the circuit?

    Voltage

  • 8

    What is an advantage of a three-phase system over a single-phase system?

    - A 73% increase in power

  • 9

    Why are capacitors installed on power lines?

    - To increase apparent power?

  • 10

    Induction only occurs?

    - When the magnetic field expands and collapses

  • 11

    Phasing out is necessary when?

    - Equipment is out dated and causes power factor problems

  • 12

    A sine wave can be defined as?

    - A graphical representation of what is happening to voltage in an AC circuit over time

  • 13

    Consider that a phase sequence into a motor is CBA and the motor is rotating clockwise, which of the following sequences will cause the motor to rotate counterclockwise?

    - ABC

  • 14

    A parallel circuit is a circuit where?

    - There is more than one path for current to flow

  • 15

    When current is in phase with voltage..

    - They both rise and fall at the same time

  • 16

    A short circuit is defined as

    A circuit where the load has been bypassed

  • 17

    Four wire Wye-systems are the overall preferred system by utility companies because?

    - it’s more reliable in regard to fault protection

  • 18

    RMS stands for root mean square and is?

    - a value of AC voltage that will produce the same amount of power as a like value of DC

  • 19

    Delta and three-wire Wye-systems look the same in the field?

    - true

  • 20

    The strength of generated voltage depends on three things. Which of the following is one of them?

    - The strength of the magnetic field

  • 21

    What effect do coil jumpers have on a power line circuit?

    They increase inductance

  • 22

    A series circuit is a circuit where?

    - There is only one path to follow

  • 23

    Rotating a magnet near a conductor produces a current because?

    The electrons are repelled and attracted due to the law of charges

  • 24

    Inductance can be increased by?

    Coiling the conductor

  • 25

    What is recommended to take place before working on a corner pole to ensure that the jumpers will be reconnected properly?

    - The jumper connections should be recorded

    • Electrical Testing Equipment

    Electrical Testing Equipment

    Maxwell Nemir · 26問 · 1年前

    Electrical Testing Equipment

    Electrical Testing Equipment

    26問 • 1年前
    Maxwell Nemir

    Electrical Systems

    Electrical Systems

    Maxwell Nemir · 25問 · 1年前

    Electrical Systems

    Electrical Systems

    25問 • 1年前
    Maxwell Nemir

    Applied Mathematics

    Applied Mathematics

    Maxwell Nemir · 25問 · 1年前

    Applied Mathematics

    Applied Mathematics

    25問 • 1年前
    Maxwell Nemir

    Introduction to Substations

    Introduction to Substations

    Maxwell Nemir · 31問 · 1年前

    Introduction to Substations

    Introduction to Substations

    31問 • 1年前
    Maxwell Nemir

    Into to power delivery

    Into to power delivery

    Maxwell Nemir · 23問 · 1年前

    Into to power delivery

    Into to power delivery

    23問 • 1年前
    Maxwell Nemir

    Electronics

    Electronics

    Maxwell Nemir · 24問 · 1年前

    Electronics

    Electronics

    24問 • 1年前
    Maxwell Nemir

    Substation Safety 2

    Substation Safety 2

    Maxwell Nemir · 25問 · 1年前

    Substation Safety 2

    Substation Safety 2

    25問 • 1年前
    Maxwell Nemir

    Rigging

    Rigging

    Maxwell Nemir · 11問 · 1年前

    Rigging

    Rigging

    11問 • 1年前
    Maxwell Nemir

    Disconnects and Switches

    Disconnects and Switches

    Maxwell Nemir · 25問 · 1年前

    Disconnects and Switches

    Disconnects and Switches

    25問 • 1年前
    Maxwell Nemir

    OSHA 2

    OSHA 2

    Maxwell Nemir · 25問 · 1年前

    OSHA 2

    OSHA 2

    25問 • 1年前
    Maxwell Nemir

    White Hat Test

    White Hat Test

    Maxwell Nemir · 27問 · 1年前

    White Hat Test

    White Hat Test

    27問 • 1年前
    Maxwell Nemir

    White hat test #2

    White hat test #2

    Maxwell Nemir · 18問 · 1年前

    White hat test #2

    White hat test #2

    18問 • 1年前
    Maxwell Nemir

    Into to power delivery

    Into to power delivery

    Maxwell Nemir · 23問 · 7ヶ月前

    Into to power delivery

    Into to power delivery

    23問 • 7ヶ月前
    Maxwell Nemir

    問題一覧

  • 1

    All of the customer owned, three-phased motors on a distribution circuit spin in the same direction

    true

  • 2

    What is used to measure reactive power in a pure inductive circuit

    - VARs

  • 3

    Frequency

    - The number of time that a generator rotates

  • 4

    In a series circuit what remains constant throughout the the circuit?

    - Amperage

  • 5

    In a open circuit, current will not flow

    - True

  • 6

    If the phase voltage (phase-to-ground) of a Wye system is 12000 volts, what is the line voltage (phase-to-phase)?

    - 20800 volts

  • 7

    In a parallel circuit, what remains constant throughout the circuit?

    Voltage

  • 8

    What is an advantage of a three-phase system over a single-phase system?

    - A 73% increase in power

  • 9

    Why are capacitors installed on power lines?

    - To increase apparent power?

  • 10

    Induction only occurs?

    - When the magnetic field expands and collapses

  • 11

    Phasing out is necessary when?

    - Equipment is out dated and causes power factor problems

  • 12

    A sine wave can be defined as?

    - A graphical representation of what is happening to voltage in an AC circuit over time

  • 13

    Consider that a phase sequence into a motor is CBA and the motor is rotating clockwise, which of the following sequences will cause the motor to rotate counterclockwise?

    - ABC

  • 14

    A parallel circuit is a circuit where?

    - There is more than one path for current to flow

  • 15

    When current is in phase with voltage..

    - They both rise and fall at the same time

  • 16

    A short circuit is defined as

    A circuit where the load has been bypassed

  • 17

    Four wire Wye-systems are the overall preferred system by utility companies because?

    - it’s more reliable in regard to fault protection

  • 18

    RMS stands for root mean square and is?

    - a value of AC voltage that will produce the same amount of power as a like value of DC

  • 19

    Delta and three-wire Wye-systems look the same in the field?

    - true

  • 20

    The strength of generated voltage depends on three things. Which of the following is one of them?

    - The strength of the magnetic field

  • 21

    What effect do coil jumpers have on a power line circuit?

    They increase inductance

  • 22

    A series circuit is a circuit where?

    - There is only one path to follow

  • 23

    Rotating a magnet near a conductor produces a current because?

    The electrons are repelled and attracted due to the law of charges

  • 24

    Inductance can be increased by?

    Coiling the conductor

  • 25

    What is recommended to take place before working on a corner pole to ensure that the jumpers will be reconnected properly?

    - The jumper connections should be recorded