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Computer Science

TRANSISTORS MCQs

Total Questions : 50

Page 1 of 5 pages
Question 1. A tuned amplifier is generally operated in ___________ operation
  1.    Class A
  2.    Class C
  3.    Class B
  4.    None of the above
 Discuss Question
Answer is Option B. -> Class C
Question 2. The arrow in the symbol of a transistor indicates the direction of ___________
  1.    electron current in the emitter
  2.    electron current in the collector
  3.    hole current in the emitter
  4.    donor ion current
 Discuss Question
Answer is Option C. -> hole current in the emitter
Question 3. A transistor is a ___________ operated device
  1.    current
  2.    voltage
  3.    both voltage and current
  4.    none of the above
 Discuss Question
Answer is Option A. -> current
Question 4. At series resonance, voltage across L is ___________ voltage across C
  1.    Equal to but opposite in phase to
  2.    Equal to but in phase with
  3.    Greater than but in phase with
  4.    Less than but in phase with
 Discuss Question
Answer is Option A. -> Equal to but opposite in phase to
Question 5. In parallel resonance, the circuit impedance is ___________
  1.    C/LR
  2.    R/LC
  3.    CR/L
  4.    L/CR
 Discuss Question
Answer is Option D. -> L/CR
Question 6. IC = [a / (1 - a )] IB + [ / (1 - a )]
  1.    ICBO
  2.    ICEO
  3.    IC
  4.    IE
 Discuss Question
Answer is Option A. -> ICBO
Question 7. The dimensions of L/CR are that of ___________
  1.    Farad
  2.    Henry
  3.    Ohm
  4.    None of the above
 Discuss Question
Answer is Option C. -> Ohm
Question 8. The disadvantage of base resistor method of transistor biasing is that it ___________
  1.    Is complicated
  2.    Is sensitive to changes in ß
  3.    Provides high stability
  4.    None of the above
 Discuss Question
Answer is Option B. -> Is sensitive to changes in ß
Question 9. If the value of a is 0
  1.    9
  2.    0.9
  3.    900
  4.    90
 Discuss Question
Answer is Option D. -> 90
Question 10. The purpose of resistance in the emitter circuit of a transistor amplifier is to ___________
  1.    Limit the change in emitter current
  2.    Provide base-emitter bias
  3.    Limit the maximum emitter current
  4.    None of the above
 Discuss Question
Answer is Option A. -> Limit the change in emitter current
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