Electrical And Radio Communications Quiz Form
Electrical And Radio Communications Quiz
Which component stores electrical energy in an electric field?
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Capacitor
Resistor
Inductor
Transistor
What is the SI unit of frequency?
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Hertz
Ohm
Farad
Volt
Select the correct statement about radio waves.
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They travel at the speed of light.
They require a medium to propagate.
They are sound waves.
They are visible to the human eye.
Match each radio frequency band to its typical application.
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Rows
Broadcast FM
2.4 GHz
VHF
Application
Marine Radio
Wi-Fi
FM Radio
Cellular
Marine Radio
Wi-Fi
FM Radio
Cellular
Marine Radio
Wi-Fi
FM Radio
Cellular
Which device is used to convert alternating current (AC) to direct current (DC)?
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Rectifier
Oscillator
Amplifier
Antenna
How confident are you in your answer to the previous question?
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1
2
3
4
5
What is the main function of an antenna?
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Transmit and receive radio signals
Store electrical charge
Regulate voltage
Amplify sound
Which of the following is NOT a type of modulation used in radio communications?
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Amplitude Modulation (AM)
Frequency Modulation (FM)
Pulse Modulation (PM)
Thermal Modulation (TM)
Arrange the following electromagnetic spectrum regions from lowest to highest frequency.
Select all components commonly found in a basic radio receiver.
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Antenna
Tuner
Speaker
Transformer
Other
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