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Communication Systems

Communication Systems
A woofer should be fed from the input through a

Band pass filter
Band stop filter
Low pass filter
High pass filter

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Communication Systems
Skip distance depends on time of day and angle of incidence.

True
False

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Communication Systems
Full duplex operation permits transmission in both directions at the same time.

True
False

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Communication Systems
For AM receivers the standard IF frequency is

10.7 MHz
1.07 MHz
455 kHz
106 kHz

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Communication Systems
In EM waves, polarization

Is always vertical in an isotropic medium
Is due to transverse nature of waves
Results from longitudinal nature of waves
Is caused by reflection

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Communication Systems
A telephone channel requires a bandwidth of about

3 kHz
50 kHz
10 kHz
1 kHz

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