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PUNJAB BOARD PREVIOUS YEAR PAPERS-Principles of communication-Exercise
- What is ozone layer ? Give its importance.
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- What is communication satellite ?
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- Explain sky wave propagation of radiowaves.
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- Draw the circuit diagram for an amplitude modulator.
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- Explain space wave propagation of radio waves.
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- What is space wave propagation ? Why is it limited upto small distance...
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- What is the need for modulation ?
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- Why audio signals cannotbe transmitted directly into space ?
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- Explain basic elements of communication system with the help of block ...
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- Explain space wave propagation.
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- Explain sky wave propagation of radiowaves.
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- What is the need for modulation ?
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- What are the limitations of amplitude modulation ?
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- Draw a labelled block diagram of a basic communication system.
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- Give one difference between point to point mode of communication and b...
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- Why is ground wave propagation not suitable for high frequency ?
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- What is the need for modulation ?
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- Draw a labelled block diagram of a basic communication system.
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- What is the modulation ? What is need for modulation?
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- Explain why sky wave propagation is not possible for high frequency ra...
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