Think you know everything there is to know about electromagnetic waves? This quiz can help. You should be aware of what ground wave communications are most effective, what ionization is, the greatest range that the ionosphere has on signals, what type of radio waves are responsible for long-distance communications, and an electromagnetic wave consist of, and what is a wavefront. This quiz can assist you in your learning about electromagnetic waves. All the best.
A voltage pulse in a conductor
A current pulse in a conductor
A voltage pulse across a resistor
A fixed point in an electromagnetic wave
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Radio waves
Light
Gamma rays
All of the above
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A region
E Region
D region
F region
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Not known
50Ω
infinite
377Ω
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ground wave
direct-wave
surface wave
Sky wave
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Both provide fade-free communications
Both are cheaper than HF radio
They operate on the same frequency band.
They are both line-of-sight (LOS) systems.
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Every 11 years
Every 4 years
Every 5 years
Every 10 years
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Depends on its constant
Depends on its wavelength
Depends on its electric and magnetic field
Is a universal constant
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Uses molecules in the Earth’s troposphere to scatter some radio energy back to Earth
Has a limited capability for data transmission
Is not widely used commercially
All of the above
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Close to the transmitter
Far from the transmitter
In the silent zone
In the skip zone
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is caused by reflections from the ground wave
arrives only with spherical wavefronts
Will occur around edge of a sharp obstacle
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12.3 MHz
33.9 Hz
33.9 MHz
12.3 Hz
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An overcast of cirriform clouds
A high pressure zone
A polar air mass
A widespread temperature inversion
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Absorption
Reflection
Attenuation
Refraction
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Increase antenna gain
Increase antenna height
Increase transmitter power
Increase receiver sensitivity
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A very low pressure area
An aurora to the north
Lightning between the transmitting and receiving antenna
A temperature inversion
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Their frequency
Their distance from the transmitter
The polarization of the wave
The polarization of the atmosphere
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VHF
UHF
HF
Microwave
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Receiver voltage
Field strength
Magnetic induction
Power density
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Circular
Elliptical
Vertical
Horizontal
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300 kHz to 3 MHz
3 to 30 MHz
30 to 300 MHz
above 300 MHz
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53.2 km
53.2 ft
53.2 mi
53.2 m
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The weather below the ionosphere
The ionization of the D region
The presence of the ionized cloud in the E region
The splitting of the E region
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direct wave
Sky wave
surface wave
Standing wave
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Critical frequency
Optimum Working Frequency (OWF)
Maximum Usable Frequency (MUF)
Skip zone
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F2
Stratosphere
Troposphere
Ionosphere
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Diffused
Absorbed
refracted
Reflected
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8.9 km
8.9 m
9.8 km
9.8 m
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Troposcatter
Ionospheric refraction
Subrefraction
The Faraday effect
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300 kHz
3 to 30 MHz
30 to 300 MHz
Above 300 MHz
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113 kW
113 W
131 W
131 kW
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595 nW
595 pW
56.9 nW
56.9 W
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