Oscillators(Electrical Engineering Questions ) Questions and Answers

Question 1. An oscillator produces___________oscillations?
  1.    Damped
  2.    Undamped
  3.    Modulated
  4.    None of the above
Explanation:-
Answer: Option B. -> Undamped
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. In a certain oscillator Av = 50. The attention of the feedback circuit must be___________?
  1.    1
  2.    01
  3.    10
  4.    02
Explanation:-
Answer: Option D. -> 02
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. The application where one would most likely find a crystal oscillator is____________?
  1.    Radio receiver
  2.    Radio transmitter
  3.    AF sweep generator
  4.    None of the above
Explanation:-
Answer: Option B. -> Radio transmitter
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. An LC oscillator cannot be used to produce ____________frequencies?
  1.    High
  2.    Audio
  3.    Very low
  4.    Very high
Explanation:-
Answer: Option C. -> Very low
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. In an LC transistor oscillator, the active device is___________?
  1.    LC tank circuit
  2.    Biasing circuit
  3.    Transistor
  4.    None of the above
Explanation:-
Answer: Option C. -> Transistor
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. In a phase shift oscillator, we use____________RC sections?
  1.    Two
  2.    Three
  3.    Four
  4.    None of the above
Explanation:-
Answer: Option B. -> Three
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. If the crystal frequency changes with temperature, we say that crystal has___________temperature coefficient?
  1.    Positive
  2.    Zero
  3.    Negative
  4.    None of the above
Explanation:-
Answer: Option A. -> Positive
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. An oscillator employs___________feedback?
  1.    Positive
  2.    Negative
  3.    Neither positive nor negative
  4.    Data insufficient
Explanation:-
Answer: Option A. -> Positive
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. ____________is a fixed frequency oscillator?
  1.    Phase-shift oscillator
  2.    Hartely-oscillator
  3.    Colpitt’s oscillator
  4.    Crystal oscillator
Explanation:-
Answer: Option D. -> Crystal oscillator
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. An important limitation of a crystal oscillator is____________?
  1.    Its low output
  2.    Its high Q
  3.    Less availability of quartz crystal
  4.    Its high output
Explanation:-
Answer: Option A. -> Its low output
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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