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Electronic Devices - Oscillator Circuits

Exercise : Oscillator Circuits - General Questions
21.

Refer to this figure. Calculate the resonant frequency.

1.126 kHz
6.17 kHz
23.9 MHz
14.1 MHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following is required for oscillation?
A > 1
The phase shift around the feedback network must be 180º.
Both A > 1 and the phase shift around the feedback network must be 180º.
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
A circuit that can change the frequency of oscillation with an application of a dc voltage is sometimes called
a voltage-controlled oscillator.
a crystal oscillator.
a Hartley oscillator.
an astable multivibrator.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In order to start up, a feedback oscillator requires
negative feedback less than 1.
positive feedback greater than 1.
unity feedback equal to 1.
no feedback.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
This circuit is a ________ oscillator.

phase-shift
Wien bridge
Colpitts
Hartley
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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