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ANALOG ELECTRONICS

Analog Electronics
One of the following is the primary function of an oscillator

None of these
 generates non sinusoidal waveforms
 produces sinusoidal oscillations
 generates sustained oscillations at a constant amplitude and specific frequency

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Analog Electronics
Relaxation Voltage controlled oscillators are used to generate

 Sinusoidal wave
 Triangular wave
 Sawtooth wave
 Both B and C

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Analog Electronics
Feedback circuit in an oscillator can be accomplished by

 Capacitive coupling between input and output
 Resistive coupling between input and output
 Inductive coupling between input and output
 Any one or combinations of the above methods

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Analog Electronics
The following are the necessary requirements of an oscillator

 Frequency stability
 Amplitude stability
 Both A and B
 Power stability

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Analog Electronics
The Barkhausen criterion for an oscillator

 Loop gain should be less than unity
 Both A and C
 The phase of a feedback signal with respect to input should be 0° or 360°
 Loop gain should be unity

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