NEET Online Exam: Trivia Quiz

23 Questions | Total Attempts: 223

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NEET Online Exam: Trivia Quiz

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Questions and Answers
  • 1. 
    The property of inductance offers opposition to which of the following quantities?
    • A. 

      Constant current

    • B. 

      Constant voltage

    • C. 

      Changes in current

    • D. 

      Changes in voltage

  • 2. 
    What is the symbol for inductance?
    • A. 

      L

    • B. 

      H

    • C. 

      XL

    • D. 

      IND

  • 3. 
    What is the unit of measurement for inductance?
    • A. 

      Ohm

    • B. 

      Rel

    • C. 

      Farad

    • D. 

      Henry

  • 4. 
    If 9 volts are induced in a conductor when the current changes by 4.5 amperes in one second, what is the total inductance of the circuit?
    • A. 

      1.5 henries

    • B. 

      2.0 henries

    • C. 

      13.5 henries

    • D. 

      40.0 henries

  • 5. 
    What physical property is similar to inductance?
    • A. 

      Mass

    • B. 

      Motion

    • C. 

      Velocity

    • D. 

      Inertia

  • 6. 
    The difference in potential across a resistor, created by current through the resistor is an example of which of the following forces?
    • A. 

      Resistive

    • B. 

      Inertia

    • C. 

      Inductive

    • D. 

      Electromotive

  • 7. 
    When a magnetic field moves through a stationary conductor, the electrons in orbit are affected in what manner?
    • A. 

      They are dislodged from orbit

    • B. 

      They move closer to their nucleus

    • C. 

      They move closer to other orbiting electrons

    • D. 

      They bunch up on one side of the nucleus

  • 8. 
    When electrons are moved in a conductor by a magnetic field, a force known by which of the following terms is created?
    • A. 

      Voltage

    • B. 

      Electromotive

    • C. 

      Potential difference

    • D. 

      All of the above

  • 9. 
    Self-induced emf is also known as what force?
    • A. 

      Magnetic force

    • B. 

      Inertial force

    • C. 

      Electromotive force

    • D. 

      Counter electromotive force

  • 10. 
    According to Lenz’s Law, the induced emf produced by a change in current in an inductive circuit tends to have what effect on the current?
    • A. 

      It aids a rise in current and opposes fall in current

    • B. 

      It aids a fall in current and opposes a rise in current

    • C. 

      It opposes either a rise or a fall in current

    • D. 

      It aids either a rise or fall in current

  • 11. 
    The direction of the induced voltage in an inductor may be found by the application of which of the following rules?
    • A. 

      The left-hand rule for inductors

    • B. 

      The left-hand rule for generators

    • C. 

      The right-hand rule for conductors

    • D. 

      The right-hand rule for motors

  • 12. 
    The left-hand rule for generators states that the thumb of the left-hand points in the direction of motion of the:
    • A. 

      Conductor

    • B. 

      Magnetic field

    • C. 

      Generator poles

    • D. 

      Induced current

  • 13. 
    When source voltage is removed from a current-carrying conductor, a voltage will be induced in the conductor by which of the following actions?
    • A. 

      The decreasing voltage

    • B. 

      The collapsing magnetic field

    • C. 

      The reversal of current

    • D. 

      The reversing electrical field

  • 14. 
    The property of inductance is present in which of the following electrical circuits?
    • A. 

      An ac circuit

    • B. 

      A dc circuit

    • C. 

      A resistive circuit

    • D. 

      Each of the above

  • 15. 
    How are inductors classified?
    • A. 

      By core type

    • B. 

      By conductor type

    • C. 

      By the number of turns

    • D. 

      By the direction of the windings on the core

  • 16. 
    Normally, most coils have cores composed of either air or:
    • A. 

      Copper

    • B. 

      Carbon

    • C. 

      Soft iron

    • D. 

      Carbon steel

  • 17. 
    The hollow form of nonmagnetic material found in the center of an aircore coil has what purpose?
    • A. 

      To focus the magnetic flux

    • B. 

      To support the windings

    • C. 

      To act as a low resistance path for flux

    • D. 

      To serve as a container for the core

  • 18. 
    Which of the following factors will NOT affect the value of inductance of a coil?
    • A. 

      Number of coil turns

    • B. 

      Diameter of the coil

    • C. 

      Conductor tensility

    • D. 

      Core materials used

  • 19. 
    When the number of turns is increased in a coil from 2 to 4, the total inductance will increase by a factor of?
    • A. 

      Eight

    • B. 

      Two

    • C. 

      Six

    • D. 

      Four

  • 20. 
    Why do large diameter coils have greater inductance than smaller diameter coils, all other factors being the same?
    • A. 

      Large diameter coils have more wire and thus more flux

    • B. 

      Large diameter coils have less resistance

    • C. 

      Small diameter coils have less resistance

    • D. 

      Small diameter coils have large cemfs which oppose current flow

  • 21. 
    If the radius of a coil is doubled, its inductance is increased by what factor?
    • A. 

      One

    • B. 

      Two

    • C. 

      Eight

    • D. 

      Four

  • 22. 
    If the length of a coil is doubled while the number of turns is kept the same, this will have (a) what effect on inductance and (b) by what factor?
    • A. 

      (a) Decrease, (b) by 1/4

    • B. 

      (a) Decrease, (b) by 1/2

    • C. 

      (a) Increase, (b) by 2 times

    • D. 

      (a) Increase, (b) by 4 times

  • 23. 
    A soft iron core will increase inductance because it has which of the following characteristics?
    • A. 

      Low permeability and low reluctance

    • B. 

      Low permeability and high reluctance

    • C. 

      High permeability and high reluctance

    • D. 

      High permeability and low reluctance

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