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True or False
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1
The interface between a transmitter and free space and between free space and a receiver is the antenna.
A)True
B)False
2
A radio signal is called an electromagnetic wave because it is made up of both electric and magnetic fields.
A)True
B)False
3
An electric field is an invisible force field produced by the presence of a potential difference between two conductors.
A)True
B)False
4
Permittivity is the dielectric constant of the material between the two conductors.
A)True
B)False
5
Even if a parallel-wire transmission line is left open, the electric and magnetic fields cannot escape from the end of the line and radiate into space.
A)True
B)False
6
The resistive component of an antenna is called is called antenna radiation resistance.
A)True
B)False
7
Polarization refers to the orientation of magnetic and electric fields with respect to the earth.
A)True
B)False
8
Antenna similarity means that the characteristics and performance of an antenna are the same whether the antenna is radiating or intercepting an electromagnetic signal.
A)True
B)False
9
One of the most widely used antenna types, formerly known as the Hertz antenna, is the one-quarter wavelength vertical antenna.
A)True
B)False
10
The bandwidth of an antenna is equal to the frequency of operation divided by Q.
A)True
B)False
11
An antenna tuner is a variable inductor, one or more variable capacitors, or a combination of these components.
A)True
B)False
12
A popular variation of the antenna tuner is the transformer circuit, which uses a coil and three capacitors to tune the antenna for optimal SWR.
A)True
B)False
13
Radio waves act very much as light waves do.
A)True
B)False
14
Refraction is the bending of a wave due to the physical makeup of the medium through which the wave passes.
A)True
B)False
15
Sky waves travel in a straight line directly from the transmitting antenna to the receiving antenna.
A)True
B)False





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