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Transmission Line II

Transmission Line II
37問 • 2年前
  • John Cerda
    • 通報

    問題一覧

  • 1

    Transmission line terminated in a short look like short to source at:

    1/4 wavelength

  • 2

    If terminating impedance is exactly equal to characteristic impedance, the return loss is ______.

    infinite

  • 3

    If terminating impedance is infinite, it is ____ line

    open ended

  • 4

    If line impedance is not terminated, it is

    finite

  • 5

    ______ is reflected from an open end without change in polarity, amplitude, or shape.

    Voltage

  • 6

    ______ is reflected from an open end with opposite polarity and without change in amplitude or shape.

    Current

  • 7

    A positive pulse sent down a transmission line terminated in a short circuit _____

    would not reflect

  • 8

    A positive pulse sent down a transmission line terminated in a open circuit would

    reflect as positive pulse

  • 9

    The reflected voltage terminated in short circuit has ______.

    the opposite polarity as the incident wave

  • 10

    The reflected voltage terminated in open circuit has

    the same polarity as the incident wave

  • 11

    The reflected current terminated in short circuit has _____

    the same polarity as the incident wave

  • 12

    The reflected current terminated in open circuit has _____

    the opposite polarity as incident wave

  • 13

    The desirable reflection coefficient is ____

    zero

  • 14

    The desirable standing wave ratio is ____

    one

  • 15

    It is ratio of load impedance to line impedance.

    Standing Wave Ratio

  • 16

    It refers to either infinitely long or terminated in its characteristic impedance.

    Any of these

  • 17

    Resonant or Tuned Line has a _____ length and is _______ in its characteristic impedance.

    finite, not terminated

  • 18

    It has impedance inversion and used as impedance transformer.

    Half Wave Line

  • 19

    A short stub is equal to quarter wavelength. The circuit is _____

    Parallel resonant

  • 20

    A open stub is equal to quarter wavelength. The circuit is _____

    Series Resonant

  • 21

    A open stub is less than quarter wavelength. The circuit is _____

    Capacitive

  • 22

    A short stub is greater than quarter wavelength. The circuit is _____

    Capacitive

  • 23

    A open stub is greater than quarter wavelength. The circuit is _____

    Inductive

  • 24

    A short stub is less than quarter wavelength. The circuit is _____

    Inductive

  • 25

    A short stub is equal to half wavelength. The circuit is _____

    Series Resonant

  • 26

    A open stub is equal to half wavelength. The circuit is _____

    Parallel Resonant

  • 27

    ____ Stub are preferred to _____ Stub due to liability to radiate.

    Short, Open

  • 28

    Use for transmission line load matching over range of frequencies.

    Double Stub

  • 29

    All open odd quarter wave and shorted even quarter wave has ______

    minimum voltage and impedance and maximum current.

  • 30

    All shorted even quarter wave has ______

    minimum voltage and impedance and maximum current.

  • 31

    All shorted even quarter wave has _____

    maximum voltage and impedance and minimum current.

  • 32

    All open odd quarter wave has _____

    maximum voltage and impedance and minimum current.

  • 33

    In Open Circuit, the _______ every half wavelength from end and _______ every quarter wavelength from end.

    voltage peaks, voltage zero

  • 34

    In Open Circuit, the adjacent zero current distance is _____and alternate current point is _______.

    half wavelength, one wavelength

  • 35

    In Short Circuit, there is maximum current and zero voltage _____ and zero current and maximum voltage at quarter wavelength _____.

    at end, from end

  • 36

    The following are function of Time Domain Reflector except:

    measure capacitance between two conductors

  • 37

    A transmission line has inductance of 1 mH and capacitance of 20 nF is coupled to 190 ohm load. The incident power is 60 W at 50 MHz. What is the series resistance needed to add to the load to match the line impedance?

    1,250 Ohm

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    問題一覧

  • 1

    Transmission line terminated in a short look like short to source at:

    1/4 wavelength

  • 2

    If terminating impedance is exactly equal to characteristic impedance, the return loss is ______.

    infinite

  • 3

    If terminating impedance is infinite, it is ____ line

    open ended

  • 4

    If line impedance is not terminated, it is

    finite

  • 5

    ______ is reflected from an open end without change in polarity, amplitude, or shape.

    Voltage

  • 6

    ______ is reflected from an open end with opposite polarity and without change in amplitude or shape.

    Current

  • 7

    A positive pulse sent down a transmission line terminated in a short circuit _____

    would not reflect

  • 8

    A positive pulse sent down a transmission line terminated in a open circuit would

    reflect as positive pulse

  • 9

    The reflected voltage terminated in short circuit has ______.

    the opposite polarity as the incident wave

  • 10

    The reflected voltage terminated in open circuit has

    the same polarity as the incident wave

  • 11

    The reflected current terminated in short circuit has _____

    the same polarity as the incident wave

  • 12

    The reflected current terminated in open circuit has _____

    the opposite polarity as incident wave

  • 13

    The desirable reflection coefficient is ____

    zero

  • 14

    The desirable standing wave ratio is ____

    one

  • 15

    It is ratio of load impedance to line impedance.

    Standing Wave Ratio

  • 16

    It refers to either infinitely long or terminated in its characteristic impedance.

    Any of these

  • 17

    Resonant or Tuned Line has a _____ length and is _______ in its characteristic impedance.

    finite, not terminated

  • 18

    It has impedance inversion and used as impedance transformer.

    Half Wave Line

  • 19

    A short stub is equal to quarter wavelength. The circuit is _____

    Parallel resonant

  • 20

    A open stub is equal to quarter wavelength. The circuit is _____

    Series Resonant

  • 21

    A open stub is less than quarter wavelength. The circuit is _____

    Capacitive

  • 22

    A short stub is greater than quarter wavelength. The circuit is _____

    Capacitive

  • 23

    A open stub is greater than quarter wavelength. The circuit is _____

    Inductive

  • 24

    A short stub is less than quarter wavelength. The circuit is _____

    Inductive

  • 25

    A short stub is equal to half wavelength. The circuit is _____

    Series Resonant

  • 26

    A open stub is equal to half wavelength. The circuit is _____

    Parallel Resonant

  • 27

    ____ Stub are preferred to _____ Stub due to liability to radiate.

    Short, Open

  • 28

    Use for transmission line load matching over range of frequencies.

    Double Stub

  • 29

    All open odd quarter wave and shorted even quarter wave has ______

    minimum voltage and impedance and maximum current.

  • 30

    All shorted even quarter wave has ______

    minimum voltage and impedance and maximum current.

  • 31

    All shorted even quarter wave has _____

    maximum voltage and impedance and minimum current.

  • 32

    All open odd quarter wave has _____

    maximum voltage and impedance and minimum current.

  • 33

    In Open Circuit, the _______ every half wavelength from end and _______ every quarter wavelength from end.

    voltage peaks, voltage zero

  • 34

    In Open Circuit, the adjacent zero current distance is _____and alternate current point is _______.

    half wavelength, one wavelength

  • 35

    In Short Circuit, there is maximum current and zero voltage _____ and zero current and maximum voltage at quarter wavelength _____.

    at end, from end

  • 36

    The following are function of Time Domain Reflector except:

    measure capacitance between two conductors

  • 37

    A transmission line has inductance of 1 mH and capacitance of 20 nF is coupled to 190 ohm load. The incident power is 60 W at 50 MHz. What is the series resistance needed to add to the load to match the line impedance?

    1,250 Ohm