Electronics - Operational Amplifiers

Exercise :: Operational Amplifiers - General Questions

11. 

If ground is applied to the (+) terminal of an inverting op-amp, the (–) terminal will:

A. not need an input resistor
B. be virtual ground
C. have high reverse current
D. not invert the signal

Answer: Option B

Explanation:

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12. 

An astable multivibrator is also known as a:

A. one-shot multivibrator
B. free-running multivibrator
C. bistable multivibrator
D. monostable multivibrator

Answer: Option B

Explanation:

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13. 

With negative feedback, the returning signal:

A. aids the input signal
B. is proportional to output current
C. opposes the input signal
D. is proportional to differential voltage gain

Answer: Option C

Explanation:

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14. 

What starts a free-running multivibrator?

A. a trigger
B. an input signal
C. an external circuit
D. nothing

Answer: Option D

Explanation:

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15. 

A portion of the output that provides circuit stabilization is considered to be:

A. negative feedback
B. distortion
C. open-loop
D. positive feedback

Answer: Option A

Explanation:

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