Extra Class
The highest level of amateur radio license with full operating privileges on all amateur bands. Most technical exam. 50 questions, 37 needed to pass.
Which of the following would allow a digital signal processing filter to create a sharper filter response?
What is the typical output impedance of an op-amp?
What is the frequency response of the circuit in E7-3 if a capacitor is added across the feedback resistor?
What is the typical input impedance of an op-amp?
What is meant by the term “op-amp input offset voltage”?
How can unwanted ringing and audio instability be prevented in an op-amp audio filter?
What is the gain-bandwidth of an operational amplifier?
What voltage gain can be expected from the circuit in Figure E7-3 when R1 is 10 ohms and RF is 470 ohms?
How does the gain of an ideal operational amplifier vary with frequency?
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?
What absolute voltage gain can be expected from the circuit in Figure E7-3 when R1 is 1,800 ohms and RF is 68 kilohms?
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?
What is an operational amplifier?
What are three common oscillator circuits?
What is a microphonic?
What is a phase-locked loop?
How is positive feedback supplied in a Colpitts oscillator?
How is positive feedback supplied in a Pierce oscillator?
Which of these functions can be performed by a phase-locked loop?
How can an oscillator’s microphonic responses be reduced?
HAM Test Bank Editorial Team
Licensed Amateur Radio Operators & Volunteer Examiners
Content for Extra Class exam questions is based on official FCC Part 97 regulations and the NCVEC question pool.