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Operational Amplifiers - General Questions (6)

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Operational Amplifiers - General Questions

41. 

mcq18_1012

Decreasing the gain in the given circuit could be achieved by

 

A. reducing the amplitude of the input voltage
B. increasing the value of the feedback resistor
C. increasing the value of the input resistor
D. removing the feedback resistor

Answer: Option C

Explanation:

No answer description available for this question

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42. 

Op-amps used as high- and low-pass filter circuits employ which configuration?

A. noninverting
B. comparator
C. open-loop
D. inverting

Answer: Option D

Explanation:

No answer description available for this question

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43. 

In order for an output to swing above and below a zero reference, the op-amp circuit requires:

A. a resistive feedback network
B. zero offset
C. a wide bandwidth
D. a negative and positive supply

Answer: Option D

Explanation:

No answer description available for this question. 

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44. 

A noninverting closed-loop op-amp circuit generally has a gain factor:

A. less than one
B. greater than one
C. of zero
D. equal to one

Answer: Option B

Explanation:

No answer description available for this question

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45. 

What is this circuit?

mcq15_1017_1

A. a low-pass filter
B. a high-pass filter
C. a bandpass filter
D. a band-stop filter

Answer: Option D

Explanation:

No answer description available for this question.

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46. 

A series dissipative regulator is an example of a:

A. linear regulator
B. switching regulator
C. shunt regulator
D. dc-to-dc converter

Answer: Option A

Explanation:

No answer description available for this question

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47. 

What is the output waveform?

mcq15_1016_1

A. sine wave
B. square wave
C. sawtooth wave
D. triangle wave

Answer: Option D

Explanation:

No answer description available for this question.

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48. 

The open-loop voltage gain (Aol) of an op-amp is the

A. external voltage gain the device is capable of
B. internal voltage gain the device is capable of
C. most controlled parameter
D. same as Acl

Answer: Option B

Explanation:

No answer description available for this question

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