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

Amplify radio frequency signals

Answer

Convert AC to DC

Answer

Tune antenna resonance

Question 2

What happens to inductive reactance as frequency increases?

Accepted Answer

It increases

Answer

It decreases

Answer

It remains constant

Answer

It becomes zero

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

Increase the gain at DC

Answer

Block all AC signals from the output

Answer

Reduce the supply voltage

Question 4

In a transistor, what are the three terminals called?

Accepted Answer

Emitter, base, collector

Answer

Anode, cathode, gate

Answer

Source, drain, gate

Answer

Positive, negative, ground

Question 5

What is the resonant frequency of an LC circuit?

Accepted Answer

The frequency at which inductive and capacitive reactances are equal

Answer

The highest frequency the circuit can pass

Answer

The frequency where resistance equals reactance

Answer

The frequency at which the capacitor fully charges

Question 6

What does the prefix 'pico' represent in electronics?

Accepted Answer

One trillionth (10⁻¹²)

Answer

One millionth (10⁻⁶)

Answer

One billionth (10⁻⁹)

Answer

One thousandth (10⁻³)

Question 7

What is the primary purpose of a voltage regulator in a power supply?

Accepted Answer

Maintain a constant output voltage despite input or load changes

Answer

Increase the output voltage to a higher level

Answer

Convert DC voltage to AC voltage

Answer

Filter out RF noise from the AC line