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PUNJAB BOARD PREVIOUS YEAR PAPERS-Principles of communication-Exercise
- 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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- What is the need for modulation ?
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- Why sky waves are not used in transmission of TV signals?
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- Explain sky wave propagation of radiowaves.
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- Explain the term ground waves propagation of radio-waves.
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- Explain space wave propagation of radiowaves.
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- Why sky waves are not used in transmission of TV signals?
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- What is difference between sky wave propagation and space wave propaga...
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- Why are short waves used in long distance broadcasts ?
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- Explain why sky wave propagation is not possible for high frequency ra...
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- What is space wave propagation ? Give one example of communication sys...
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- Write any two factors, which justify the need of modulation for the tr...
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- Explain ground wave propagation of radiowaves.
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- What is the need for modulation of a signal ? Give two reasons.
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