Module 1_2 Quiz

1. How do radio antennas transmit radio waves?

a) Accelerating photons in the antenna generate radio waves.
b) Accelerating electrons in the antenna generate radio waves.
c) Antenna vibrations generate radio waves.
d) Small changes in antenna temperature generate radio waves.
e) None of the above are correct.

2. How do radio antennas receive radio waves?

a) Radio waves accelerate photons in the antenna.
b) Radio waves accelerate electrons in the antenna.
c)Radio waves cause antenna vibrations.
d) Radio waves create small changes in antenna temperature.
e) None of the above are correct.

3. What is r-squared loss?

a) The loss of radio energy caused by resistance to electric current.
b) The loss of radio energy due to absorption and/or scattering by air molecules.
c) The loss of radio energy during reflection from the square corners of radar reflectors.
d) The loss of radio energy due to refraction (bending) of the radio waves.
e) None of the above are correct.

4. Which of the following radio display methods can give an indication of wavelength?

a) Wave display.
b) Phase display.
c) Ray trace display.
d) Signal strength display.
e) a and b above.

5. Which of the following radio displays can be thought of as representing photon paths?

a) Wave display.
b) Phase display.
c) Ray trace display.
d) signal Strength display.
e) a and b above

6. Which of the following radio displays shows details of how signal strength varies as a function of range and height?

a) Wave display.
b) Ray Trace display
c) Signal Strength display
d) a and b above
e) None of the above