FREE Ham Radio Technician II Questions And Answers

Question 1

What mathematical formula should be used to determine the power lost by a series linear voltage regulator?

Accepted Answer

Voltage difference from input to out multiplied by output current

Answer

Input voltage multiplied by input current

Answer

Input voltage divided by output current

Answer

Output voltage multiplied by output current

Question 2

When during the day does transequatorial propagation work best?

Accepted Answer

Afternoon or early evening

Answer

Morning

Answer

Noon

Answer

Late at night

Question 3

Where are the rectangular coordinates for the impedance of a pure resistance plotted?

Accepted Answer

On the horizontal axis

Answer

On the vertical axis

Answer

On a line through the origin, slanted at 45 degrees

Answer

On a horizontal axis

Question 4

Which of the following best depicts how a receiving filter might block signals coming from an adjacent channel?

Accepted Answer

Shape factor

Answer

Passband ripple

Answer

Phase response

Answer

Noise factor

Question 5

Which of the following carrier frequencies is prohibited for LSB AFSK transmissions on the RTTY 17-meter band and the 18.068–18.110 MHz data segment?

Accepted Answer

18.068 MHz

Answer

18.100 MHz

Answer

18.107 MHz

Answer

18.110 MHz

Question 6

How can the noise produced by a car alternator be reduced in both conducted and radiated forms?

Accepted Answer

By connecting the radio's power leads directly to the battery and installing coaxial capacitors in line with the alternator leads

Answer

By installing filter capacitors in series with the DC power lead and a blocking capacitor in the field lead

Answer

By installing a noise suppression resistor and a blocking capacitor in both leads

Answer

By installing a high-pass filter in series with the radio's power lead and a low-pass filter in parallel with the field lead

Question 7

When the line is open at the other end, what impedance does a 1/4-wavelength transmission line present to a generator?

Accepted Answer

Very low impedance

Answer

The same as the characteristic impedance of the line

Answer

The same as the input impedance to the generator

Answer

Very high impedance

Question 8

What is the phase connection between a series resonant circuit's resonance voltage and current?

Accepted Answer

The voltage and current are in phase

Answer

The current leads the voltage by 90 degrees

Answer

The voltage leads the current by 90 degrees

Answer

The voltage and current are 180 degrees out of phase

Question 9

What occurs as the length of a long, unterminated wire antenna increases in terms of its radiation pattern?

Accepted Answer

The lobes align more in the direction of the wire

Answer

The lobes become more perpendicular to the wire

Answer

The vertical angle increases

Answer

The vertical angle increases

Question 10

What is the normalization procedure in relation to a Smith chart?

Accepted Answer

Reassigning impedance values with regard to the prime center

Answer

Reassigning resistance values with regard to the reactance axis

Answer

Reassigning reactance values with regard to the resistance axis

Answer

Reassigning prime center with regard to the reactance axis