Electronic Devices and Circuit Theory:: Oscillator Circuits

Only the condition βA = ________ must be satisfied for self-sustained oscillations to result.

A. 0
B. -1
C 1
D. None of the above

At what phase shift is the magnitude of βA at its maximum in the Nyquist plot?

A. 90
B. 180
C 270
D. 0

The amplifier is unstable if the Nyquist curve plotted encloses (encircles) the 1 point, and it is stable otherwise.

A. True
B. False

What is the total phase shift requirement, around the feedback loop, for a phase-shift oscillator?

A. 90
B. 180
C 270
D. 360

Sinusoidal oscillators operate with ________ feedback.

A. positive
B. negative

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