Q.1
Are radio waves electromagnetic waves
  • True
  • False
Q.2
Which of the following uses radio waves?
  • Mobile phones
  • Satellites
  • Televisions
  • All of the these
Q.3
Maximum power transfer occurs when the generator impedance Zi is equal to the load impedance Zl
  • True
  • False
Q.4
The maximum power of typical transistor RF power amplifiers is in what range?
  • Milliwatts
  • Watts
  • Hundreds of Watts
  • Kilowatts
Q.5
What are the properties of a radio wave?
  • frequency
  • amplitude
  • protons
  • Both A & B
Q.6
What are radio waves used for on earth?
  • wireless transmission of sound messages
  • information for communication
  • Both A & B
  • None of these
Q.7
Can radio waves damage your DNA and even lead to cancer?
  • False
  • True
Q.8
Which of the following materials allows the flow of radio waves?
  • conductor
  • inductor
  • insulator
  • resistor
Q.9
Which of the following is the frequency range of radio waves?
  • 300 kHz – 300 GHz
  • 300 GHz - 3 x 1013 Hz
  • 3 x 1013 Hz - 3 x 1015 Hz
  • 3 GHz - 3 x 1021 Hz
Q.10
In which of the following means is radio waves generated and detected?
  • A battery and a microscope
  • A light detector
  • A microphone and Z104 detector
  • A spark-gap transmitters and receivers
Q.11
The Radio Act ofset up the ________ to regulate the airwaves and grant licenses to broadcasters who serve a public interest.
  • Federal Airwaves Commission (FAC)
  • Federal Radio Commission (FRC)
  • Radio Airwaves Commission (FAC)
Q.12
Who first produced radio waves through an oscillator inwhich included two coils of wire & transmitting radio waves from one coil to the other?
  • Heinrich Hertz
  • Rick Dees
  • Wilton Meyers
  • Gregory Vincent
Q.13
The following are known scientists. Who among them first predicted that radio waves existed
  • Galileo Galilee
  • Guglielmo Marconi
  • Isaac Newton
  • James Clerk Maxwell
Q.14
Based on the electromagnetic spectrum, which of the following do radio waves have?
  • High frequency and long wavelength
  • High frequency and short wavelength
  • Low frequency and long wavelength
  • Low frequency and short wavelength
Q.15
Janus has to research and give a presentation to his class on among the different types of electromagnetic waves. Which of the following would be impossible for him to work on?
  • Infrared
  • Microwave
  • Radio wave
  • Ultrasound
Q.16
Radio waves use ultra-high frequency band to deliver which of the following?
  • Email
  • Music
  • Signal
  • Text Message
Q.17
Who is the first person to prove that radio waves exist?
  • Heinrich Jazz
  • Henry Hertz
  • Albert Einstein
  • Heinrich Hertz
Q.18
What does GPS tell you?
  • The time
  • Your exact location
  • How much money you have
  • What the weather is like
Q.19
What is the correct way a cell phone call goes out?
  • The phone call goes out, transmits through microwaves, then moves to the central hub. Then the signals go to the nearest tower to the receiver of the call
  • The phone call goes out, transmits through  radio waves, then moves to the central hub. Then the signals go to the nearest tower to the receiver of the call
  • The phone call goes out, transmits through microwaves, then moves to the tower. Then the signals go to the nearest hub to the receiver of the call
  • The phone call just magically gets to the other phone
Q.20
Which waves can reach great distances (Waves go into atmosphere and reflect back to Earth so that can move around the curvature of Earth)?
  • FM
  • AM
  • Radio
  • Microwaves
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