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  • Pn Junction Diode

General Science

PN JUNCTION DIODE MCQs

Total Questions : 25

Page 1 of 3 pages
Question 1. An instrument used to measure current is
  1.    Voltmeter
  2.    Ammeter
  3.    Multimeter
  4.    Speedometer
 Discuss Question
Answer is Option B. -> Ammeter
Question 2. Which of the following cannot move?
  1.    Holes
  2.    Free Electrons
  3.    Ions
  4.    Majority carriers
 Discuss Question
Answer is Option C. -> Ions
Question 3. If the positive terminal of the battery is connected to the anode of the diode, then it is known as
  1.    Forward biased
  2.    Reverse biased
  3.    Equilibrium
  4.    none of the above
 Discuss Question
Answer is Option A. -> Forward biased
Question 4. A galvanometer in series with a high resistance is called ……………
  1.    An ammeter
  2.    A voltmeter
  3.    A wattmeter
  4.    None of the above
 Discuss Question
Answer is Option B. -> A voltmeter
Question 5. The most commonly used semiconductor in making solar cell:
  1.    Ge
  2.    Si
  3.    Both Ge and Si
  4.    GaAs
 Discuss Question
Answer is Option D. -> GaAs
Question 6. Which of the following results when the equilibrium established in a semiconductor?
  1.    Restrain the process of diffusion
  2.    Electric field very high
  3.    Restrain the process of diffusion and electric field very high
  4.    None of these
 Discuss Question
Answer is Option C. -> Restrain the process of diffusion and electric field very high
Question 7. The current produced in reverse-bias is called as
  1.    Reverse Current
  2.    Breakdown Current
  3.    Negative Current
  4.    Leakage Current
 Discuss Question
Answer is Option D. -> Leakage Current
Question 8. A two-terminal device that which can maintain a fixed voltage
  1.    Voltage drop
  2.    Voltage potential
  3.    Voltage source
  4.    Voltage fixer
 Discuss Question
Answer is Option C. -> Voltage source
Question 9. The current in a semiconductor is produced by
  1.    electron only
  2.    holes only
  3.    negative ions
  4.    both electrons and holes
 Discuss Question
Answer is Option D. -> both electrons and holes
Question 10. Which of the below mentioned statements is false regarding a p-n junction diode?
  1.    Diodes are rectifying devices
  2.    Diodes are unidirectional devices
  3.    Diodes have three terminals
  4.    Diode are uncontrolled devices
 Discuss Question
Answer is Option C. -> Diodes have three terminals
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