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General Science

JUNCTION TRANSISTOR MCQs

Total Questions : 16

Page 1 of 2 pages
Question 1. What are the 3 legs of a transistor called?
  1.    Base, Electrode, Commiter
  2.    Bridge, Collector, Extruder
  3.    Base, Collector, Emitter
  4.    Brake, Collection, Emit
 Discuss Question
Answer is Option C. -> Base, Collector, Emitter
Question 2. To operate properly, a transistor's base-emitter junction must be forward biased with reverse bias applied to which junction?
  1.    collector-emitter
  2.    base-collector
  3.    base-emitter
  4.    collector-base
 Discuss Question
Answer is Option D. -> collector-base
Question 3. Depletion region behaves as
  1.    Semiconductor
  2.    insulator
  3.    conductor
  4.    High resistance
 Discuss Question
Answer is Option B. -> insulator
Question 4. At the base-emitter junctions of a transistor, one finds
  1.    a reverse bias
  2.    a wide depletion layer
  3.    low resistance
  4.    none of the above
 Discuss Question
Answer is Option C. -> low resistance
Question 5. The ratio of dc collector current (IC) to dc emitter current (IE)
  1.    gamma
  2.    theta
  3.    beta
  4.    alpha
 Discuss Question
Answer is Option D. -> alpha
Question 6. The region of operation of a transistor where base-emitter junction has a low resistance due to forward bias and the base-collector junction has a high resistance due to reverse bias
  1.    cutoff
  2.    saturation
  3.    breakdown
  4.    active or linear
 Discuss Question
Answer is Option D. -> active or linear
Question 7. Which is beta's current ratio?
  1.    IC/IB
  2.    IC/IE
  3.    IB/IE
  4.    IE/IB
 Discuss Question
Answer is Option A. -> IC/IB
Question 8. When the transistor is in cutoff, VCE is
  1.    o V
  2.    equal to VBE
  3.    minimum
  4.    equal to VCC
 Discuss Question
Answer is Option D. -> equal to VCC
Question 9. Most of the electrons in the base of an NPN transistor flow:
  1.    out of the base lead
  2.    into the collector
  3.    into the emitter
  4.    into the base supply
 Discuss Question
Answer is Option B. -> into the collector
Question 10. When transistors are used in digital circuits they usually operate in the:
  1.    active region
  2.    breakdown region
  3.    saturation and cutoff regions
  4.    linear region
 Discuss Question
Answer is Option C. -> saturation and cutoff regions
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