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Multiple Choice Quiz
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1
Which of the following is not a reason why most half-wave antennas are mounted horizontally at low frequencies?
A)physical construction is easier
B)more cost-effective
C)mounting is easier
D)support is easier
2
The shape of the electromagnetic energy radiated from or received by an antenna is called the
A)signal shape
B)electromagnetic pattern
C)radiation pattern
D)antenna pattern
3
Antennas that transmit an equal amount of energy in the horizontal direction are called
A)bi-directional
B)unidirectional
C)omnidirectional
D)unilateral
4
The ability of an antenna to send or receive signals over a narrow horizontal directional range is referred to as
A)focal factor
B)permittivity
C)directivity
D)horizontal range
5
A basic antenna connected to a transmission line plus one or more additional conductors that are not connected to the transmission line form a
A)parasitic array
B)bi-directional array
C)half-wave dipole
D)counterpoise
6
An antenna made up of a driven element and one or more parasitic elements is generally referred to as a
A)Hertz antenna
B)Marconi antenna
C)collinear antenna
D)Yagi antenna
7
Which antennas usually consist of two or more half-wave dipoles mounted end to end?
A)Hertz
B)Marconi
C)collinear
D)Yagi
8
A stacked collinear antenna consisting of half-wave dipoles spaced from one another by one-half wavelengths is the
A)broadside array
B)end-fire array
C)wide-bandwidth array
D)parasitic array
9
When the characteristic impedance of the transmission line matches the output impedance of the transmitter and the impedance of the antenna itself,
A)the SWR will be 10:1
B)the SWR will be 1:10
C)minimum power transfer will take place
D)maximum power transfer will take place
10
A one-quarter wavelength of coaxial or balanced transmission line of a specific impedance connected between a load and a source in order to match impedances is
A)a balun
B)an autotransformer
C)a Q section
D)dummy load





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