# Practice Quiz in Op-Amp Applications Part 5

(Last Updated On: February 3, 2020)

This is the Online Practice Quiz in Op-Amp Applications Part 5 from the book, Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad. If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

### Continue Part V of the Online Practice Quiz

#### Quiz in Op-Amp Applications

Question 41. The roll-off for a second-order high-pass filter is _____.

A. either –20 dB per decade or –6 dB per octave

B. either –40 dB per decade or –12 dB per octave

C. either –60 dB per decade or –18 dB per octave

D. None of these

Question 42. A low-pass filter _____.

A. provides a constant output up to the cutoff frequency

B. passes frequencies from zero up to the cutoff frequency

C. rejects all frequencies above the cutoff frequency

D. All of these

Question 43. The input impedance of a voltage buffer is _____.

A. very low

B. low

C. high

D. very high

Question 44. When a number of stages are connected in series, the overall gain is the _____ of the individual stage gains.

A. sum

B. product

C. difference

D. average

Question 45. An active circuit is composed of a(n) _____.

A. resistor

B. capacitor

C. op-amp

D. All of these

Question 46. In a millivoltmeter, the diodes and the capacitor are used in _____ parts of the circuit.

A. the dc

B. the ac

C. both the dc and ac

D. neither the dc nor ac

Question 47. The output voltage of a voltage buffer is _____ with the input voltage.

A. in phase

B. 45º out of phase

C. 90º out of phase

D. 180º out of phase

Question 48. In a current-controlled voltage source using the inverting op-amp circuit, the controlled output current is _____ with the input voltage source.

A. in phase

B. 45º out of phase

C. 90º out of phase

D. 180º out of phase

Question 49. A voltage summing amplifier has _____.

A. several inputs and several outputs

B. several inputs and one output

C. one input and several outputs

D. one input and one output

Question 50. A bandpass filter uses _____ circuit.

A. a high-pass

B. a low-pass

C. a high-pass and a low-pass

D. neither a low-pass nor a high-pass

### More Practice Quiz in Op-Amp Applications

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

Practice Quiz Part 4

Practice Quiz Part 5

Practice Quiz Part 6

### See: Complete List of Practice Quizzes

Note: After taking this particular quiz, you can proceed to check all the topics.