Electronics - Basic Op-Amp Circuits

Exercise :: Basic Op-Amp Circuits - General Questions

6. 

If the input to a comparator is a sine wave, the output is a

A. ramp voltage
B. sine wave
C. rectangular wave
D. sawtooth wave

Answer: Option C

Explanation:

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7. 

A basic series regulator has

A. an error detector
B. a load
C. a reference voltage
D. both an error detector and a reference voltage

Answer: Option D

Explanation:

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8. 

A comparator is an example of a(n)

A. active filter
B. current source
C. linear circuit
D. nonlinear circuit

Answer: Option D

Explanation:

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9. 

Initially, the closed-loop gain (Acl) of a Wien-bridge oscillator should be

A. Acl < 3
B. Acl > 3
C. 0
D. Acl approxequalto.gif 1

Answer: Option B

Explanation:

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10. 

In an averaging amplifier, the input resistances are

A. equal to the feedback resistance
B. less than the feedback resistance
C. greater than the feedback resistance
D. unequal

Answer: Option C

Explanation:

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