Discussion
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- Question
With negative feedback, the returning signal:
Options- A. aids the input signal
- B. is proportional to output current
- C. opposes the input signal
- D. is proportional to differential voltage gain
- Correct Answer
- opposes the input signal
- 1. An ideal operational amplifier has
Options- A. infinite output impedance
- B. zero input impedance
- C. infinite bandwidth
- D. All of the above Discuss
- 2. The Schmitt trigger is a two-state device that is used for:
Options- A. pulse shaping
- B. peak detection
- C. input noise rejection
- D. filtering Discuss
- 3. A noninverting closed-loop op-amp circuit generally has a gain factor:
Options- A. less than one
- B. greater than one
- C. of zero
- D. equal to one Discuss
- 4. What three subcircuits does a phase locked loop (PLL) consist of?
Options- A. phase comparator, comparator, and VCO
- B. phase comparator, bandpass filter, and VCO
- C. phase comparator, bandpass filter, and demodulator
- D. phase comparator, low-pass filter, and VCO Discuss
- 5. In order for an output to swing above and below a zero reference, the op-amp circuit requires:
Options- A. a resistive feedback network
- B. zero offset
- C. a wide bandwidth
- D. a negative and positive supply Discuss
- 6. An ideal amplifier should have:
Options- A. high input current
- B. zero offset
- C. high output impedance
- D. moderate gain Discuss
- 7. A series dissipative regulator is an example of a:
Options- A. linear regulator
- B. switching regulator
- C. shunt regulator
- D. dc-to-dc converter Discuss
- 8. All of the following are basic op-amp input modes of operation EXCEPT
Options- A. inverting mode
- B. common-mode
- C. double-ended
- D. single-ended Discuss
- 9.
What value of input resistance is needed in the given circuit to produce the given output voltage?
Options- A. 50 Ω
- B. 4 kΩ
- C. 4.08 kΩ
- D. 5 kΩ Discuss
- 10. How many logic states does an S-R flip-flop have?
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
Operational Amplifiers problems
Search Results
Correct Answer: infinite bandwidth
Correct Answer: pulse shaping
Correct Answer: greater than one
Correct Answer: phase comparator, low-pass filter, and VCO
Correct Answer: a negative and positive supply
Correct Answer: zero offset
Correct Answer: linear regulator
Correct Answer: inverting mode
Correct Answer: 4 kΩ
Correct Answer: 4
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