Quiz  /  Inductance Class 11 MCQ Questions With Answers

  • 1. 
    An iron core

  • increases the value of inductance
  • decreases the value of inductance

  • 2. 
    A common inductor found in fluorescent light fixtures is a __________

  • starter
  • cathode
  • ballast
  • switcher

  • 3. 
    Inductance is measured in __________.

  • Ohms
  • Farads
  • henrys
  • RPMs

  • 4. 
    Which of the following is the total series capacitive reactance formula?

  • XCT = XC1 * XC2 * XC3....
  • XCT = XC1 - XC2 - XC3...
  • XCT = XC1 + XC2 + XC3...
  • XCT = 1/[(1/XC1) + (1/XC2) + (1/XC3) ...]

  • 5. 
    The value of mutual inductance is measured

  • in watts
  • in henries

  • 6. 
    __________ affects a DC circuit only when the current is first turned on, turned off, or when there is a charge in the load resistance.

  • capacitance
  • Inductance
  • A time delay
  • A relay

  • 7. 
    A time-delay relay that uses an RC timing circuit is called a(n)_________

  • solid-state, time-delay relay
  • adjustable relay
  • dashpot time-delay relay
  • motor-driven, time-delay relay

  • 8. 
    The faster the current changes

  • the lower the induced voltage
  • the higher the induced voltage

  • 9. 
    Which of the following is a type of capacitor?

  • Electrolytic
  • Nonpolarized
  • Variable
  • All of the above
  • None of the above

  • 10. 
    The concept of a magnetic field being formed around a conductor when current flows through it is called __________.

  • capacitance
  • electromagnetism
  • flux
  • All of the above
  • None of the above

  • 11. 
    Elements with a definite value of inductance

  • are called inductors
  • are called coils
  • are called sources

  • 12. 
    Which of the following is not an example of an electromagnetic device?

  • Solenoid
  • Relay
  • Resistor
  • Motor

  • 13. 
    Induction by a varying current

  • results from the change in current
  • results from the change in the current value

  • 14. 
    One of the effects a capacitor has in a DC circuit is that it will __________.

  • charge to a voltage equal to the source voltage
  • continue to charge until the source is completely drained
  • act like an open until it is fully charged
  • All of the above
  • None of the above

  • 15. 
    Which of the following is the correct formula for calculating total parallel inductive reactance in a parallel circuit?

  • XLT = XL1 + XL2 + XL3 ...
  • XLT = XL1 * XL2 * XL3...
  • XLT = 1/[(1/XL1) + (1/XL2) + (1/XL3) ... ]
  • XLT = (1/XL1) + (1/XL2) + (1/XL3) ...

  • 16. 
    The resistance provided by an inductor in an AC circuit is called __________.

  • induced resistance
  • inductive reactance
  • electromotive force
  • All of the above
  • None of the above

  • 17. 
    The formula for calculating total parallel capacitance is __________

  • CT= C1 + C2 + C3...
  • (1/CT) = (1/C1) + (I/C2) + (1/C3)
  • CT= C1 * C2 * C3...
  • CT = C1 - C2 - C3 ....

  • 18. 
    Which of the following is the correct formula for calculating total series inductance?

  • LT = L1 + L2 + L3...
  • LT = L1 * L2 * L3...
  • LT = (1/L1) + (1/L2) + (1/L3) ..
  • All of the above
  • None of the above

  • 19. 
    Any conductor can provide

  • electric power
  • induced voltage

  • 20. 
    Capacitance is measured in __________.

  • Farads
  • henrys
  • Ohms
  • Volts

  • 21. 
    A coil that opposes any change in current flow is called a(n) __________

  • inductor
  • capacitor
  • transducer
  • oscillator

  • 22. 
    The inductance of a coil depends upon

  • its size
  • its core
  • its number of turns

  • 23. 
    Any conductor has

  • some definite value of resistance
  • some definite value of inductance

  • 24. 
    In an electric DC power supply, a capacitor is commonly used to__________

  • block the current flow
  • increase the current flow
  • filter out the unwanted AC voltage
  • decrease the voltage

  • 25. 
    The energy stored by a capacitor is called a(n) __________.

  • induced voltage
  • electrostatic charge
  • voltage spike
  • All of the above
  • None of the above
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