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Electronics - Basic Op-Amp Circuits

@ : Home > Electronics > Basic Op-Amp Circuits > General Questions

Exercise

"Everything you can imagine is real."
- Pablo Picasso
1. 

The center frequency of a band-pass filter is always equal to the
A. bandwidth
B. –3 dB frequency
C. bandwidth divided by Q
D. geometric average of the critical frequencies
2. 

The formula mcq19_1008_1.gif shows that for a given capacitor, if the voltage changes at a constant rate with respect to time, the current will
A. increase
B. decrease
C. be constant
D. decrease logarithmically
3. 

A zero-level detector is a
A. comparator with a sine-wave output
B. comparator with a trip point referenced to zero
C. peak detector
D. limiter
4. 

A digital-to-analog converter is an application of the
A. scaling adder
B. voltage-to-current converter
C. noninverting amplifier
D. adjustable bandwidth circuit
5. 

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
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

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