oscillators MCQs – Page 2

Practise focused oscillators questions with marked answers for exam preparation and subject revision.

oscillators Mcqs
21. In an LC circuit, when the capacitor is maximum, the inductor energy is____________?
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A. Maximum

B. None of the above

C. Half-way between maximum and minimum

D. Minimum
22. In a phase shift oscillator, the frequency determining elements are _______________?
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A. R and C

B. L and C

C. None of the above

D. R, L and C

23. In an LC oscillator, the frequency of oscillator is____________L or C?
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A. Proportional to square of

B. Directly proportional to

C. Inversely proportional to square root of

D. Independent of the values of

24. A Wien bridge oscillator uses___________feedback?
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A. Only positive

B. Only negative

C. Both positive and negative

D. None of the above

25. In a phase shift oscillator, we use____________RC sections?
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A. Two

B. Four

C. None of the above

D. Three
26. The piezoelectric effect in a crystal is___________?
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A. A change in resistance because of temperature

B. A change in frequency because of temperature

C. None of the above

D. A voltage developed because of mechanical stress
27. ____________is a fixed frequency oscillator?
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A. Hartely-oscillator

B. Phase-shift oscillator

C. Colpitts oscillator

D. Crystal oscillator
28. For an oscillator to properly start, the gain around the feedback loop must initially be_________?
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A. Greater than 1

B. 1

C. Less than 1

D. Equal to attenuation of feedback circuit