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Electronic Mechanic
Electronic Mechanic Set-1
Oscillators
7

Oscillators MCQ with Answers

7) Which circuits commonly use parallel-fed Hartley oscillators?

Stereo amplifiers

Radio receivers

Television receivers

Automatic voltage stabilizers

Answer is:

Radio receivers

Oscillators MCQ with Answers

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Related Oscillators MCQ with Answers

8) What type of arrangement is required to sustain the oscillations of the oscillator circuit?

Provide negative feedback

Provide regenerative feedback

Increase the bias voltage

Increase the value of inductor

Answer is:

Provide regenerative feedback

9) What type of feed back is used by the Wein-bridge oscillator to oscillate the signal?

No feedback

Positive feedback

Negative feedback

Both positive and negative feedback

Answer is:

Both positive and negative feedback

10) How to improve the frequency stability in oscillator circuits?

Increase the supply voltage

By using quartz crystal

Using L and C

Improve the property of circuits

Answer is:

By using quartz crystal

11) Which is the transistor used to operate the Colpitts oscillator?

AC 127

BF 194B

BC 148B

AC 188

Answer is:

BF 194B

Oscillators MCQ with Answers

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