Discussion
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- Question
In an averaging amplifier, the input resistances are
Options- A. equal to the feedback resistance
- B. less than the feedback resistance
- C. greater than the feedback resistance
- D. unequal
- Correct Answer
- greater than the feedback resistance
- 1. The ramp voltage at the output of an op-amp integrator
Options- A. increases or decreases at a linear rate
- B. increases or decreases exponentially
- C. is always increasing and never decreasing
- D. is constant Discuss
- 2. A digital-to-analog converter is an application of the
Options- A. scaling adder
- B. voltage-to-current converter
- C. noninverting amplifier
- D. adjustable bandwidth circuit Discuss
- 3. A comparator is an example of a(n)
Options- A. active filter
- B. current source
- C. linear circuit
- D. nonlinear circuit Discuss
- 4. If the value of resistor Rf in an averaging amplifier circuit is equal to the value of one input resistor divided by the number of inputs, the output will be equal to
Options- A. the average of the individual inputs
- B. the inverted sum of the individual inputs
- C. the sum of the individual inputs
- D. the inverted average of the individual inputs Discuss
- 5. The center frequency of a band-pass filter is always equal to the
Options- A. bandwidth
- B. ?3 dB frequency
- C. bandwidth divided by Q
- D. geometric average of the critical frequencies Discuss
- 6. A basic series regulator has
Options- A. an error detector
- B. a load
- C. a reference voltage
- D. both an error detector and a reference voltage Discuss
- 7. The resistive change of a strain gauge
Options- A. is based on the weight placed upon it, but can be many thousands of ohms
- B. is usually no more than 100 Ω
- C. is based on the gauge factor, but is typically less than an ohm
- D. has a positive temperature coefficient Discuss
- 8. The change in value of an analog signal during the conversion process produces what is called the
Options- A. quantization error
- B. resolution error
- C. Nyquist error
- D. sampling error Discuss
- 9. The purpose of compensation for a thermocouple is
Options- A. to decrease temperature sensitivity
- B. to increase voltage output
- C. to cancel unwanted voltage output of a thermocouple
- D. used for high-temperature circuits Discuss
- 10. What is the moving part of a linear variable differential transformer?
Options- A. Primary
- B. Secondary
- C. Diaphragm
- D. Core Discuss
Basic Op-Amp Circuits problems
Search Results
Correct Answer: increases or decreases at a linear rate
Correct Answer: scaling adder
Correct Answer: nonlinear circuit
Correct Answer: the inverted average of the individual inputs
Correct Answer: geometric average of the critical frequencies
Correct Answer: both an error detector and a reference voltage
Correct Answer: is based on the gauge factor, but is typically less than an ohm
Correct Answer: quantization error
Correct Answer: to cancel unwanted voltage output of a thermocouple
Correct Answer: Core
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