A repeater in $T.V.$ transmission is

Important Questions on Communication Systems

EASY

COMEDK UGET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 33 - Communication Systems>COMEDK UGET 2014>Q 1

The increase in the height of the tower of height $200 \mathrm{m}$ to get its coverage range tripled is

MEDIUM

COMEDK UGET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 33 - Communication Systems>COMEDK UGET 2014>Q 1

The T.V. signals have a bandwidth of $3.7 \mathrm{Mhz}.$ The number of T.V. channels that can be accommodated with a band of $3700 \mathrm{GHz}$ is

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 33 - Communication Systems>COMEDK UGET 2014>Q 1

The waves suitable for transmission of radio signals are

EASY

COMEDK UGET

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 33 - Communication Systems>COMEDK UGET 2015>Q 1

A message signal of frequency $10 \mathrm{kHz}$ and peak value of $10 \mathrm{volts}$ is used to moderate a carrier of frequency $1 \mathrm{MHz}$ and peak voltage $20 \mathrm{volts}.$ The modulation index and side bands produced are