Ham Radio General Class Test FREE Ham Radio General Class Test Electronic Principles and Circuits Questions and Answers 3

Question 1

What is the purpose of a bypass capacitor connected across the emitter resistor in a common-emitter amplifier?

Accepted Answer

To prevent signal gain reduction at AC frequencies

Answer

To increase DC bias stability

Answer

To protect the transistor from voltage spikes

Answer

To reduce power consumption

Question 2

What type of filter passes frequencies above a specified cutoff frequency and attenuates those below it?

Accepted Answer

High-pass filter

Answer

Low-pass filter

Answer

Band-pass filter

Answer

Notch filter

Question 3

What is the turns ratio of a transformer needed to match a 200-ohm source to a 50-ohm load?

Accepted Answer

2:1

Answer

4:1

Answer

1:2

Answer

1:4

Question 4

Which oscillator circuit uses a tapped inductor in its feedback network?

Accepted Answer

Hartley oscillator

Answer

Colpitts oscillator

Answer

Crystal oscillator

Answer

Wien bridge oscillator

Question 5

What is the effect of negative feedback on an amplifier's bandwidth?

Accepted Answer

Bandwidth increases

Answer

Bandwidth decreases

Answer

Bandwidth remains unchanged

Answer

Bandwidth becomes unpredictable

Question 6

What is the reactance of a 50 microhenry inductor at a frequency of 3.5 MHz?

Accepted Answer

1,099 ohms

Answer

175 ohms

Answer

550 ohms

Answer

35 ohms