Electronics - Operational Amplifiers

Exercise :: Operational Amplifiers - General Questions

21. 

All of the following are basic op-amp input modes of operation EXCEPT

A. inverting mode
B. common-mode
C. double-ended
D. single-ended

Answer: Option A

Explanation:

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22. 

What is the output voltage?

A. 15 V
B. 5 V
C. –5 V
D. –15 V

Answer: Option C

Explanation:

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23. 

A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier?

A. common-mode
B. darlington
C. differential
D. operational

Answer: Option C

Explanation:

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24. 

With negative feedback, the returning signal

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

Answer: Option C

Explanation:

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25. 

What is the output waveform?

A. sine wave
B. square wave
C. +15 V
D. –15 V

Answer: Option A

Explanation:

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