WAVE PRO. AND ANTENNAS QUIZ

Which of the following best describes radio interference?

• Same signal with different arrival times

• Two different signals at the same frequency

• Signals from adjacent channels but with overlapping spectra

• All of these

Which of the following is true about ground waves?

• The higher the frequency, the longer it can propogate

• The higher the frequency, the lesser the tilting

• Only vertically polarized signal can propagate

• All of these

A type of radio wave propagation that uses the ionosphere to transmit the signal to a greater distance

• Ground wave

• Sky wave

• Space wave

• Radio wave

"A changing magnetic field produces an electric field"

• Maxwell's equation

• Faraday's law

• Gauss Law

• Ampere's Law

What are the categories of polarization?

• Vertical, Horizontal

• Linear, Random

• Circular, Elliptical

• Linear, Non-Linear

A 1kW transmitter produces a power density of 3uW/m² at a distance of ___

• 3 km

• 5.15 km

• 26.53 Mm

• 18.23 km

Find the electric field strength if the magnetic field intensity is 12 uA/m in free space

• 4.52 mV/m

• 12 uV/m

• 31.83 nV/m

• 12 mV/m

Which of the following bands is sky wave most suited?

• Low Frequency

• High Frequency

• Very Lowe Frequency

• Very High Frequency

In ground wave propagation, the receiver antenna should be ___

• Vertically Polarized

• Horizontally Polarized

• Circularly Polarized

• Elliptically Polarized

What is the effect of increasing the length of a dipole antenna?

• Increases bandwidth

• Increases gain

• Decreases frequency

• Decreases polarization