Ham Radio General Class Test FREE Ham Radio General Class Test Electronic Principles and Circuits Questions and Answers 2

Question 1

What is the primary function of a mixer stage in a superheterodyne receiver?

Accepted Answer

To combine two frequencies to produce sum and difference frequencies

Answer

To amplify the incoming RF signal

Answer

To filter out unwanted harmonics

Answer

To convert audio signals to RF

Question 2

Which component is commonly used to regulate voltage in a power supply circuit?

Accepted Answer

Zener diode

Answer

Transformer

Answer

Inductor

Answer

Fuse

Question 3

What is the approximate impedance of a half-wave dipole antenna in free space?

Accepted Answer

73 ohms

Answer

50 ohms

Answer

100 ohms

Answer

300 ohms

Question 4

In a common-emitter transistor amplifier, what is the phase relationship between input and output signals?

Accepted Answer

180 degrees out of phase

Answer

In phase

Answer

90 degrees out of phase

Answer

45 degrees out of phase

Question 5

What happens to the total capacitance when capacitors are connected in parallel?

Accepted Answer

Total capacitance is the sum of individual capacitances

Answer

Total capacitance decreases

Answer

Total capacitance equals the smallest value

Answer

Total capacitance is the reciprocal of the sum of reciprocals

Question 6

What is the resonant frequency of a series LC circuit with a 10 microhenry inductor and a 100 picofarad capacitor?

Accepted Answer

5.03 MHz

Answer

1.59 MHz

Answer

15.9 MHz

Answer

50.3 MHz