T3B-2010: Radio and electromagnetic wave properties; the electromagnetic spectrum, wavelength vs. frequency, velocity of electromagnetic waves
T3B01:
What is the name for the distance a radio wave travels during one complete cycle?
Wavelength
Wave speed
Waveform
Wave spread
T3B02:
What term describes the number of times per second that an alternating current reverses direction?
Frequency
Pulse rate
Speed
Wavelength
T3B03:
What are the two components of a radio wave?
Electric and magnetic fields
AC and DC
Voltage and current
Ionizing and non-ionizing radiation
T3B04:
How fast does a radio wave travel through free space?
At the speed of light
At the speed of sound
Its speed is inversely proportional to its wavelength
Its speed increases as the frequency increases
T3B05:
How does the wavelength of a radio wave relate to its frequency?
The wavelength gets shorter as the frequency increases
The wavelength gets longer as the frequency increases
There is no relationship between wavelength and frequency
The wavelength depends on the bandwidth of the signal
T3B06:
What is the formula for converting frequency to wavelength in meters?
Wavelength in meters equals 300 divided by frequency in megahertz
Wavelength in meters equals frequency in hertz multiplied by 300
Wavelength in meters equals frequency in hertz divided by 300
Wavelength in meters equals frequency in megahertz divided by 300
T3B07:
What property of radio waves is often used to identify the different frequency bands?
The approximate wavelength
The magnetic intensity of waves
The time it takes for waves to travel one mile
The voltage standing wave ratio of waves
T3B08:
What are the frequency limits of the VHF spectrum?
30 to 300 MHz
30 to 300 kHz
300 to 3000 kHz
300 to 3000 MHz
T3B09:
What are the frequency limits of the UHF spectrum?
300 to 3000 MHz
30 to 300 kHz
30 to 300 MHz
300 to 3000 kHz
T3B10:
What frequency range is referred to as HF?
3 to 30 MHz
300 to 3000 MHz
30 to 300 MHz
300 to 3000 kHz
T3B11:
What is the approximate velocity of a radio wave as it travels through free space?
300,000,000 meters per second
3000 kilometers per second
300,000 miles per hour
186,000 miles per hour
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