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.
In Figure E6-2, which is the schematic symbol for a Schottky diode?
What is used to control the attenuation of RF signals by a PIN diode?
What is the function of hysteresis in a comparator?
What happens when the level of a comparator’s input signal crosses the threshold voltage?
What is tri-state logic?
Which of the following is an advantage of BiCMOS logic?
Which of the following digital logic families has the lowest power consumption?
Why do CMOS digital integrated circuits have high immunity to noise on the input signal or power supply?
What best describes a pull-up or pull-down resistor?
In Figure E6-3, which is the schematic symbol for a NAND gate?
What is used to design the configuration of a field-programmable gate array (FPGA)?
In Figure E6-3, which is the schematic symbol for a NOR gate?
In Figure E6-3, which is the schematic symbol for the NOT operation (inversion)?
What is piezoelectricity?
What is the equivalent circuit of a quartz crystal?
Which of the following is an aspect of the piezoelectric effect?
Why are cores of inductors and transformers sometimes constructed of thin layers?
How do ferrite and powdered iron compare for use in an inductor core?
What core material property determines the inductance of an inductor?
Which of the following materials has the highest temperature stability of its magnetic characteristics?
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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.