2A672 Edit Code 7 Quiz

90 Questions | Total Attempts: 179

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2A672 Quizzes & Trivia

2A672 edit code 7.


Questions and Answers
  • 1. 
    In an atom, this electron contains the most energy.
    • A. 

      Stationary electrons

    • B. 

      Orbiting electrons

    • C. 

      Valence electrons

    • D. 

      K shell electrons

  • 2. 
    When there are eight electrons in the outer most shell of an atom, it is considered
    • A. 

      Charged

    • B. 

      Unstable

    • C. 

      Complete

    • D. 

      Stable

  • 3. 
    Atoms having more than four electrons, but less than eight are known as
    • A. 

      Insulators

    • B. 

      Conductors

    • C. 

      Stable atoms

    • D. 

      Semiconductors

  • 4. 
    The electrostatic fields around a positive ion move
    • A. 

      Inward

    • B. 

      Outward

    • C. 

      Inward, then outward

    • D. 

      Outward, then inward

  • 5. 
    These factors affect the resistance of a material
    • A. 

      Area, weight, and state of material

    • B. 

      Area, temperature, and type of material

    • C. 

      Temperature, weight, and state of material

    • D. 

      Temperature, type of material, and state of material

  • 6. 
    In a series-parallel circuit, the series current at I1 = 9 amps; in the two parallel branches, I2 = 5 amps; and the value of I3 is not listed. Use Ohm’s law to find the value of I3 and IT.
    • A. 

      I3=5 amps and IT=14 amps

    • B. 

      I3=4 amps and IT=9 amps

    • C. 

      I3=4 amps and IT=18 amps

    • D. 

      Not enough information to solve

  • 7. 
    This is relative motion between a conductor and a magnetic field that causes voltage to be induced.
    • A. 

      Reluctance

    • B. 

      Direct current

    • C. 

      Magnetism

    • D. 

      Electromagnetic induction

  • 8. 
    This is the basic principle of transformer operation.
    • A. 

      Mutual induction

    • B. 

      Magnetic induction

    • C. 

      Counter electromotive force

    • D. 

      Primary and secondary induction

  • 9. 
    This transformer winding acts as a conductor and provides the path for the voltage to be induced into.
    • A. 

      Stationary

    • B. 

      Primary

    • C. 

      Secondary

    • D. 

      Field

  • 10. 
    If the size of the plates of a capacitor is increased, how is capacitance affected?
    • A. 

      Capacitance increases

    • B. 

      Capacitance decreases

    • C. 

      Capacitance remains the same

    • D. 

      Capacitance increases only if the plate size doubles

  • 11. 
    This statement best describes a capacitive circuit
    • A. 

      Current leads applied voltage by 90 degrees.

    • B. 

      Applied voltage leads current by 90 degrees

    • C. 

      Has the ability to conduct in one direction and not the other.

    • D. 

      Has the ability to conduct in all directions when gated or discharged.

  • 12. 
    This statement best describes a diode
    • A. 

      It is a five-terminal device

    • B. 

      It is a three-terminal device

    • C. 

      It has the ability to conduct in one direction and not the other

    • D. 

      It has the ability to conduct in all directions when gated or discharged

  • 13. 
    How many electrons does the valance band of an intrinsic semiconductor have?
    • A. 

      3

    • B. 

      4

    • C. 

      5

    • D. 

      6

  • 14. 
    This is the area of a semiconductor where P-type material is joined to N-type material.
    • A. 

      Dielectric region

    • B. 

      Depletion region

    • C. 

      Depletion field

    • D. 

      PN region

  • 15. 
    A bridge rectifier is installed in an alternating current (AC) circuit to
    • A. 

      Decrease direct current (DC) pulses

    • B. 

      Provide fullwave rectification

    • C. 

      Provide halfwave rectification

    • D. 

      Decrease ripple frequency

  • 16. 
    In a circuit using a bridge rectifier, how many diodes are forward biased during the first cycle of alternating current (AC)?
    • A. 

      4

    • B. 

      3

    • C. 

      2

    • D. 

      1

  • 17. 
    This is how a zener diode is connected in a solid state circuit to regulate voltage.
    • A. 

      In parallel to the load

    • B. 

      In series with the load

    • C. 

      In parallel to the resistor

    • D. 

      In series with the resistor

  • 18. 
    This is how is a zener diode is connected in a circuit to protect the load
    • A. 

      In parallel to the resistor

    • B. 

      In series with the load

    • C. 

      In parallel to the load

    • D. 

      Forward biased

  • 19. 
    A silicon-controlled rectifier (SCR) has this many layers
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 20. 
    In order to turn off a silicon-controlled rectifier (SCR), the current must drop below the
    • A. 

      Trigger current

    • B. 

      Holding current

    • C. 

      Variable current

    • D. 

      Breakdown current

  • 21. 
    This is the major difference between a NPN and PNP transistor.
    • A. 

      A PNP transistor can only be used as a regulator

    • B. 

      An NPN transistor can only be used as a switch

    • C. 

      Direction of current flow

    • D. 

      Number of junctions

  • 22. 
    If the arrow in a bipolar transistor is pointing away from the base, which type of transistor is it?
    • A. 

      N-type

    • B. 

      P-type

    • C. 

      NPN

    • D. 

      PNP

  • 23. 
    This is the circuit in a bipolar transistor that carries 5 percent of the current flow
    • A. 

      Base circuit

    • B. 

      Load circuit

    • C. 

      Control circuit

    • D. 

      Emitter-collector circuit

  • 24. 
    These are the three leads of a unijunction transistor (UJT).
    • A. 

      Anode, cathode, and gate

    • B. 

      Emitter, base 1, and base 2

    • C. 

      Emitter, collector, and base

    • D. 

      Common emitter, common collector, and common base

  • 25. 
    This is the purpose of a transistor amplifier
    • A. 

      Controls current to the load.

    • B. 

      Controls voltage to the load

    • C. 

      Controls resistance to the load

    • D. 

      Acts as a spike protector for the load

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