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Operational Amplifiers
Comments
Question
The feedback resistor has a value of ______ in the given circuit
Options
A. 2 kΩ
B. 10.5 kΩ
C. 21 kΩ
D. 40 kΩ
Correct Answer
40 kΩ
Operational Amplifiers problems
Search Results
1. A circuit that has an output equal to the algebraic sum of the inputs is called a(n) ______ .
Options
A. integrator amplifier
B. summing amplifier
C. differential amplifier
D. voltage multiplier
Show Answer
Scratch Pad
Discuss
Correct Answer: summing amplifier
2. If the input to a comparator is a sine wave, the output is a(n) _________.
Options
A. ramp voltage
B. sine wave
C. sawtooth wave
D. rectangular wave
Show Answer
Scratch Pad
Discuss
Correct Answer: rectangular wave
3. A ______ is not a multivibrator.
Options
A. one-shot
B. flip-flop
C. VCO
D. bistable
Show Answer
Scratch Pad
Discuss
Correct Answer: one-shot
4. An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .
Options
A. PLL
B. Schmitt trigger
C. VCO
D. S-R latch
Show Answer
Scratch Pad
Discuss
Correct Answer: VCO
5. The 555 timer can be connected to operate a(n) ___________.
Options
A. astable multivibrator
B. bistable multivibrator
C. monostable multivibrator
D. astable multivibrator and a monostable multivibrator
Show Answer
Scratch Pad
Discuss
Correct Answer: astable multivibrator and a monostable multivibrator
6. A PLL can be used as a(n) ___________.
Options
A. series voltage regulator
B. frequency multiplier
C. relaxation oscillator
D. Schmitt trigger
Show Answer
Scratch Pad
Discuss
Correct Answer: frequency multiplier
7. Switching voltage regulators have ______ than linear regulators.
Options
A. longer life
B. simpler circuitry
C. greater efficiency
D. lower cost
Show Answer
Scratch Pad
Discuss
Correct Answer: greater efficiency
8. The efficiency rating of a power supply is determined by internal power loss.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
9. Heat produced by a resistor is generally a desirable effect.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
10. Doubling the voltage across a resistor will cut the current by half.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
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