300+ TOP MCQs on Oscillator and Answers

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MCQs on Oscillator :

1. Which among the following parameters acts as an initiator for the operation of an oscillator in the absence of input signal?
(A) Noise figure
(B) Noise voltage
(C) Noise power
(D) Noise temperature

Answer

Answer: (B) Noise voltage

2. Multivibrators belongs to which of the following category?
(A) Square wave oscillators
(B) Sinusoidal oscillators
(C) Ramp wave oscillators
(D) Triangular wave oscillators

Answer

Answer: (A) Square wave oscillators

3. Which among the below-mentioned oscillators does not adopt any kind of feedback mechanism?
(A) Wein bridge oscillator
(B) UJT relaxation oscillator
(C) Phase-shift oscillator
(D) All of the above

Answer

Answer: (B) UJT relaxation oscillator

4. In an LC oscillator, the frequency of the oscillator is……………… L or C.
(A) Proportional to square of
(B) Directly proportional to
(C) Independent of the values of
(D) Inversely proportional to the square root of

Answer

Answer: (D) Inversely proportional to the square root of

5. An oscillator produces……………. oscillations
(A) Damped
(B) Undamped
(C) Modulated
(D) None of the above

Answer

Answer: (B) Undamped

6.: An oscillator employs ……………… feedback
(A) Positive
(B) Negative
(C) Neither positive nor negative
(D) Data insufficient

Answer

Answer: (A) Positive

7. Which of the following is not an example for the non-sinusoidal oscillator?
(A) Sawtooth Generators
(B) Blocking oscillators
(C) Multivibrator
(D) Crystal oscillators

Answer

Answer: (D) Crystal oscillators

8. The sinusoidal oscillator is also called
(A) LC oscillator
(B) Harmonic oscillator
(C) RC oscillator
(D) Crystal oscillators

Answer

Answer: (B) Harmonic oscillator

9. Which of the following oscillators cannot be used in low-frequency oscillations?
(A) Wein bridge oscillators
(B) RC phase shift oscillators
(C) Colpitts oscillators
(D) RC oscillators

Answer

Answer: (C) Colpitts oscillators