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 >> Engineering >> Electronics Communications
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3130)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3300)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13442)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2386)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (420)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (80)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (165)
 Instrumentation interview questions  Instrumentation Interview Questions (2402)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (107)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (45)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (80)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1204)
Question
What is the difference between FDM and WDM?
 Question Submitted By :: Electronics-Communications
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
FDM IS USED FOR ANALOG SIGNALS GENERALLY FOR THE SIGNALS
TRANSMITED THROUGH TWISTED PAIR CABLE.
WHILE
WDM IS USED FOR SIGNALS TRANSMITTED THROUGH OPTICAL FIBER
CABLES.
BOTH ARE SAME BUT USED IN DIFFERENT AREAS.
 
Is This Answer Correct ?    38 Yes 2 No
Sanjay Kumar Pal
 
Answer
# 2
FDM > Frequency Division Multiplexing
WDM > Wavelength Division Multiplexing
 
Is This Answer Correct ?    32 Yes 13 No
Aby Perumpanany
 
 
 
Answer
# 3
in fdm data transmitted based on the particular frequency
and in wdm data transmitted based on the particular wavelength .
fdm is used in twisted pair cable and wdm is used in fiber
optic cable .
 
Is This Answer Correct ?    13 Yes 5 No
Vinit92
 
Answer
# 4
their is no difference between FDM and WDM because wavelenth is inversly proportional to frequency. but generally when we are working on optical domain then we consider WDM because

i) we have limited source to genrate light using LED or LASER. using this we can genrate light easily and then passthourgh prism to get different wavelength. we can not genrate such high frequency.

ii) to analysis of such high frequency in CRO is not possible that why we are using WDM when we r working on Optical domain


Regards,
Raj Hakani
(M.tech Communication)
Nirma University
 
Is This Answer Correct ?    8 Yes 3 No
Hakani Raj
 
Answer
# 5
yes 
Is This Answer Correct ?    8 Yes 12 No
Sandhi
 

 
 
 
Other Electronics Communications Interview Questions
 
  Question Asked @ Answers
 
aoa, i have applied in FFC pakistan. i want to know the technical written test questions of FFC. can anybody plz help me   5
what is the difference between drift current and diffusion current. TCS 23
WHAT IS THE USES OF PLC? Avanceon 16
hi friends, i have applied for oces 2010. can u give me a brief idea about the entrance exam which is gng to be held on may30th.Is the exam of technical or it includes aptitude? i am from ece stream.pls mail me at navinmsl@gmail.com   1
why we can indicate inductor with 'L'?   1
what is the basic difference between latches and flip flops ABC 5
explain 4 maxwell equations??? BEL 1
why the input resistance of an op-amp is high whereas it's output resistance is low? IBM 10
what does hi-fi stands for BEL 3
what is CFC logic in communication system? where do we require this for protection system ABB 2
How to programme PIC microcontroller.   1
What is the difference between Analog circuit and Digital circuit? TCS 2
 
For more Electronics Communications 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