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Electromagnetic Radiation Fundamentals

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Questions and Answers

What occurs when a source is moving away from an observer?

Frequency appears higher

Frequency appears lower (correct)

Frequency becomes infinite

Frequency remains the same

What is the phenomenon where multiple versions of a signal arrive at the receiver with different delays?

Delay effect (correct)

Channel dispersion

Multipath propagation

Intersymbol interference

What is the result of intersymbol interference (ISI)?

Received signal is delayed

Received signal is enhanced

Received signal is amplified

Received signal is distorted (correct)

What is the main cause of intersymbol interference (ISI)?

All of the above Signup and view all the answers

What is the effect of intersymbol interference (ISI) on the received signal?

Signal becomes distorted Signup and view all the answers

What is the result of signal reflections in a transmission medium?

Signals arrive at the receiver with different delays Signup and view all the answers

What is the consequence of finite speed of signal propagation?

Signals arrive with different delays Signup and view all the answers

What is the effect of multipath propagation on a transmitted signal?

Signal is distorted Signup and view all the answers

What is intersymbol interference (ISI) caused by?

Channel dispersion, multipath propagation, and signal reflections Signup and view all the answers

What happens when the frequency of a signal appears lower?

Pitch decreases Signup and view all the answers