Electronics - Basic Op-Amp Circuits

Exercise :: Basic Op-Amp Circuits - True or False

6. 

To operate properly, an oscillator requires an external ac input signal.

A. True
B. False

Answer: Option B

Explanation:

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7. 

For a Wien-bridge oscillator to produce a sustained sine-wave output, the phase shift around the positive feedback loop must be greater than 0°.

A. True
B. False

Answer: Option B

Explanation:

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8. 

The effectiveness of a filter in rejecting signals beyond cutoff frequency is a function of the filter roll-off rating.

A. True
B. False

Answer: Option A

Explanation:

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9. 

A two-pole active filter produces a roll-off rate of –20 dB/decade.

A. True
B. False

Answer: Option B

Explanation:

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10. 

A zero-level detector is a type of comparator circuit.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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