A repeater is a combination of

Important Questions on Communication Systems

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 6

The audible range of frequencies is

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 7

The frequency band of $\mathrm{FM}$ broadcast is

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 8

If $\mathrm{\lambda }$ is the wavelength of radio signals is to be transmitted, then the length of the Hertz antenna is,

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 9

Modulation is necessary

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 10

A device that connects one computer to another across ordinary telephone lines is called

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 11

Three waves $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ of frequencies $1600 \mathrm{kHz}, 5 \mathrm{MHz}$ and $60 \mathrm{MHz}$, respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communication:

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 12

The velocity of electromagnetic waves in a dielectric medium (refractive index $\mathrm{\mu }=4$) is

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Gamma Question Bank for Engineering Physics>Chapter 24 - Communication Systems>Assignment Set-2>Q 13

A speech signal of $3 \mathrm{kHz}$ is used to modulate a carrier signal of frequency $1 \mathrm{MHz}$, using amplitude modulation. The frequencies of the side bands will be