ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Aptitude Questions >> English
 
 


 

 
 English interview questions  English Interview Questions (464)
 General Aptitude interview questions  General Aptitude Interview Questions (1894)
 Puzzles interview questions  Puzzles Interview Questions (460)
Question
Why is modulation necessary in a communication system
 Question Submitted By :: English
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Two main reasons:
1. Most of the signals of our interest are of low
frequency(information signals). But low frequency signals
are not transmissible so they have to be carried by high
frequency signals!
This is due to 2 reasons:
a)low frequency means longer antenna
b]low frequency signals are not powerful enough to be
transmitted at longer distances
To carry low frequency signals(information signal) by high
frequency carrier signals modulation must be done!!

2. For sending and receiving multiple signals at the same
time u need to send the signals at different frequency(other
ways they would interfere) which can only be done by
modulating them with different high frequency signals!
 
Is This Answer Correct ?    47 Yes 1 No
Ali Azam
 
Answer
# 2
modulation is necessary in communication bcoz to reach the
destination the signal want some power to reach there.so
modulation is used 2 add an extra energy 2 signal 2 reach
destination........
 
Is This Answer Correct ?    17 Yes 13 No
Antony Rebello.s
 
 
 

 
 
 
Other English Interview Questions
 
  Question Asked @ Answers
 
What does endurance mean? Yardi 2
briefly describe your ideal job Technip 1
SSC ? Grade ?D? Exam ENGLISH SPOTTING ERRORS   2
SSC ? Grade ?D? Exam ENGLISH CLOSET TEST TEST ? 22   1
I like to visit other countries but I find the __________ of travel is too high. a) money B) cost c) expenses d) currency eClerx 7
pivot table is use for? eClerx 3
2^31*2^40   2
hi guys, how to prepare for INDIAN BANK clerk exam,pls gave me any suggestions, abt related on bank exams,prvs examinors on iob done, pls told me how to prepare for exams, abt timings etc. Indian-Bank 1
can u send me last 5 years tax assistant examination solved papers SSC 3
What is the hindi menning of AMBULANCE   6
I have passed in repco bank officer scale 1.what type of interview question they may ask? pls send ur ideas to my email id nabanbadma@yahoo.co.in   1
SSC ? Grade ?D? Exam ENGLISH CLOSET TEST TEST-5   1
 
For more English Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com