Quiz  /  Semiconductor Device Class 11 MCQ Questions With Answers

  • 1. 
    A simple diode rectifier circuit can convert: I. AC voltage to DC voltage II. DC voltage to AC voltage III. Small AC voltage to a large AC voltage

  • I only
  • II only
  • III only
  • I and II only
  • I and III only

  • 2. 
    Find the voltage across the Silicon diode in the circuit shown:

  • 0 V
  • 0.2 V
  • 0.7 V
  • 5.3 V

  • 3. 
    For the circuit shown below, the output will be:

  • 2 negative peaks per full cycle of input
  • 2 Positive peaks per full cycle of input
  • Negative peaks for negative half cycles of input
  • Positive peaks for positive half cycles of input
  • Zero volts

  • 4. 
    Is the element added to the type N semiconductors.

  • Antimony
  • Boron
  • Chlorine
  • Argon

  • 5. 
    1. What is the output voltage for the circuit shown, if D1 and D2 are Silicon diodes, and D3 is a Germanium diode?

  • 1.3 V
  • 7.3 V
  • 7.7 V
  • 8.4 V

  • 6. 
    Diagram 12 shows the arrangement of silicon atoms after an atom X is doped to form an extrinsic semiconductor. Which of the following is true?

  • The conductivity of the semiconductor decreases.
  • The semiconductor becomes a p-type.
  • The majority charge carrier is electron.
  • Atom X is a trivalent atom

  • 7. 
    Let np and ne be the number density of holes and conduction electrons respectively in a semiconductor. Then,

  • np > ne in an intrinsic semiconductor, I < Ip + Ie
  • np = ne in an extrinsic semiconductor, I > Ip + Ie
  • np = ne in an intrinsic semiconductor, I = Ip + Ie
  • np > ne in an intrinsic semiconductor, I = 0( Here, Ip = current due to holes,Ie= current due to electrons, I= total current)

  • 8. 
    Which of the following circuits shows the forward-biased arrangement of a diode?

  • A
  • B
  • C
  • D

  • 9. 
    Diagram 11 shows a circuit with a bulb that does not light up. Which of the following actions will make the bulb light up?

  • Connecting a fuse to the circuit
  • Reversing the battery connection
  • Changing the power supply to a 3V battery
  • Reversing the bulb connection

  • 10. 
    Which of the following circuits will light up the bulb?

  • A
  • B
  • C
  • D

  • 11. 
    Which of the following statements is NOT the diode application in electronic circuit?

  • Diode as voltage regulator
  • Diode as Rectifier
  • Diode as Amplifier
  • Diode as solar cell

  • 12. 
    1. The resistivity of a semiconductor lies between

  • (a)10 -6 Ωm to10-8 Ωm
  • n(b) 108 Ωm to1014 Ωm
  • (c) 10 -2 Ωm to104 Ωm
  • (d) none of these

  • 13. 
    Diagram 13 shows five identical bulbs P, Q, R, S and T in a circuit. Which bulbs light up continuously when the switch is on?

  • P, Q and T only
  • Q and S only
  • R and S only
  • P and R only

  • 14. 
    Is the element added to the type p semiconductors.

  • Antimony
  • Boron
  • Chlorine
  • Argon
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