Ham Radio Technician Test Basic Electronics & Circuitry 3

Question 1

What is the function of an RF choke in a ham radio circuit?

Accepted Answer

Block RF while passing DC

Answer

An RF choke is an inductor designed to block high-frequency RF signals while allowing DC to pass.

Question 2

What happens to inductive reactance as frequency increases?

Accepted Answer

It increases

Answer

Inductive reactance (XL = 2πfL) increases proportionally with frequency.

Question 3

What is the purpose of a bypass capacitor in an amplifier circuit?

Accepted Answer

Provide a low-impedance path for AC signals around a resistor

Answer

A bypass capacitor provides a low-impedance AC path around a resistor, preventing signal loss.

Question 4

In a transistor, what are the three terminals called?

Accepted Answer

Emitter, base, collector

Answer

A bipolar junction transistor (BJT) has emitter, base, and collector terminals.

Question 5

What is the resonant frequency of an LC circuit?

Accepted Answer

The frequency at which inductive and capacitive reactances are equal

Answer

At resonance, XL equals XC, and the circuit oscillates at its natural frequency.

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