|
About the Extra Questions category
|
|
0
|
3
|
December 15, 2025
|
|
E7B08 - Why are switching amplifiers more efficient than linear amplifiers?
|
|
1
|
4
|
January 24, 2026
|
|
E8A01 - What technique shows that a square wave is made up of a sine wave and its odd harmonics?
|
|
1
|
3
|
January 24, 2026
|
|
E2A13 - Which of the following techniques is used by digital satellites to relay messages?
|
|
1
|
9
|
January 2, 2026
|
|
E6D07 - What is the current that flows in the primary winding of a transformer when there is no load on the secondary winding?
|
|
1
|
6
|
January 2, 2026
|
|
E7H13 - Which of the following is a technique for providing highly accurate and stable oscillators needed for microwave transmission and reception?
|
|
0
|
2
|
January 2, 2026
|
|
E7H12 - Which of the following ensures that a crystal oscillator operates on the frequency specified by the crystal manufacturer?
|
|
0
|
0
|
January 2, 2026
|
|
E7H11 - What are the major spectral impurity components of direct digital synthesizers?
|
|
0
|
0
|
January 2, 2026
|
|
E7H10 - What information is contained in the lookup table of a direct digital synthesizer (DDS)?
|
|
0
|
1
|
January 2, 2026
|
|
E7H09 - What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital-to-analog converter, and a low-pass anti-alias filter?
|
|
0
|
0
|
January 2, 2026
|
|
E7H08 - Which of the following components can be used to reduce thermal drift in crystal oscillators?
|
|
0
|
0
|
January 2, 2026
|
|
E7H07 - How can an oscillator's microphonic responses be reduced?
|
|
0
|
0
|
January 2, 2026
|
|
E7H06 - Which of these functions can be performed by a phase-locked loop?
|
|
0
|
0
|
January 2, 2026
|
|
E7H05 - How is positive feedback supplied in a Pierce oscillator?
|
|
0
|
0
|
January 2, 2026
|
|
E7H04 - How is positive feedback supplied in a Colpitts oscillator?
|
|
0
|
0
|
January 2, 2026
|
|
E7H03 - What is a phase-locked loop?
|
|
0
|
0
|
January 2, 2026
|
|
E7H02 - What is a microphonic?
|
|
0
|
0
|
January 2, 2026
|
|
E7H01 - What are three common oscillator circuits?
|
|
0
|
0
|
January 2, 2026
|
|
E7G12 - What is an operational amplifier?
|
|
0
|
0
|
January 2, 2026
|
|
E7G11 - What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 3,300 ohms and RF is 47 kilohms?
|
|
0
|
1
|
January 2, 2026
|
|
E7G09 - What will be the output voltage of the circuit shown in Figure E7-3 if R1 is 1,000 ohms, RF is 10,000 ohms, and 0.23 volts DC is applied to the input?
|
|
0
|
1
|
January 2, 2026
|
|
E7G08 - How does the gain of an ideal operational amplifier vary with frequency?
|
|
0
|
0
|
January 2, 2026
|
|
E7G07 - What voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms?
|
|
0
|
1
|
January 2, 2026
|
|
E7G06 - What is the gain-bandwidth of an operational amplifier?
|
|
0
|
0
|
January 2, 2026
|
|
E7G05 - How can unwanted ringing and audio instability be prevented in an op-amp audio filter?
|
|
0
|
0
|
January 2, 2026
|
|
E7G04 - What is meant by the term "op-amp input offset voltage"?
|
|
0
|
1
|
January 2, 2026
|
|
E7G03 - What is the typical input impedance of an op-amp?
|
|
0
|
0
|
January 2, 2026
|
|
E7G02 - What is the frequency response of the circuit in E7-3 if a capacitor is added across the feedback resistor?
|
|
0
|
1
|
January 2, 2026
|
|
E7G01 - What is the typical output impedance of an op-amp?
|
|
0
|
0
|
January 2, 2026
|
|
E7F14 - Which of the following would allow a digital signal processing filter to create a sharper filter response?
|
|
0
|
0
|
January 2, 2026
|