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BJT Amplifiers and Oscillators MCQs

Electronics Engineering Objective Questions

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379. The tuned circuit for good stability should have
A. low C
B. low R
C. high Q
D. low L
Discussion
380. By varying which of the following the RF feedback oscillator are usually tuned?
A. Load impedance
B. Bias
C. L or C
D. Supply voltage
Discussion
381. _____ oscillator has the best frequency stability and accuracy.
A. Tickler feedback
B. Crystal controlled
C. Colpitts
D. Hartley
Discussion
382. Surface Acoustic wave oscillators are suitable for
A. I-C applications
B. low power oscillations
C. low frequency oscillations
D. non-sinusoidal wave forms
Discussion
383.  Oscillators have ____ feedback
A. positive
B. negative
C. no
D. either positive or negative
Discussion
384.  From generating 1 kHz frequency which of the following oscillators will be suitable?
A. Hartley oscillator
B. Colpitts oscillator
C. Weinbridge oscillator
D. Tuned collector oscillator
Discussion
385.  Due to which of the following the crystal frequency is very stable?
A. Structure of crystal
B. Rigidity of crystal
C. High Q of crystal
D. Size of crystal
Discussion

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