Electronics - Operational Amplifiers

Exercise :: Operational Amplifiers - True or False

1. 

Feedback is used in an open-loop operational amplifier circuit.

A. True
B. False

Answer: Option B

Explanation:

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2. 

This circuit is operating in a closed-loop mode.

A. True
B. False

Answer: Option B

Explanation:

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3. 

This circuit is a bandpass filter.

A. True
B. False

Answer: Option A

Explanation:

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4. 

This circuit is a voltage follower.

A. True
B. False

Answer: Option B

Explanation:

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5. 

If the two inputs to a differential amplifier are exactly the same, then the output is the signal multiplied by two.

A. True
B. False

Answer: Option B

Explanation:

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