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In frequency modulation, the amount of frequency deviation depends on the

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Important Questions on Communication Systems

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 49
The communication satellites are parked at a height of (from surface of earth)
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 50
3‐30 MHz frequency range is known as
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 51
Long distance short wave radio broadcasting uses
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 52
A photodetector is made from a compound semiconductor with band gap 0.73 eV. The maximum wavelength it can detect is
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 53
Satellite communication is generally carried out for frequencies above
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 55
For an amplitude modulated wave, the maximum amplitude is found to be 10 V while the minimum amplitude is found to be 6 V. Determine the modulation index (%).
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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 56

A transmitting antenna at the top of a tower has a height 32 m and the height of the receiving antenna is 50 m. What is the maximum distance between them for satisfactory communication in line of sight (LOS) mode?

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 57
Which of the following is not a transmission channel?