For a system to work, as oscillator the total phase shift of the loop gain must

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Question
For a system to work, as oscillator the total phase shift of the loop gain must be equal to
Options
A. 90°
B. 45°
C. 270°
D. 360°

Correct Answer

360°

Explanation

Gain of system with + ve feedback =

For a system to work, as oscillator the total phase shift of the loop gain must be equal to 90° 45°

for oscillation

but V₀ ? 0

so, that 1 - AB = 0 ⟹ AB = 1 ?0° or 360°.

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Options
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B. T_on is kept constant T is varied
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Options
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