Answer / anjani

FM DEMODULATION RESULTS IN A RANGE OF FREQUECIES i.e
basically bandwidth required for FM is high, also the video
signals themselves hav a large BW therfore if video is FM
MODULATED THEN THE BW REQUIREMENT WILL BE VERY HIGH SO
VIDEO SIGNALS R NOT FM MODULATED

Answer / vinit92

when we are using fm for sending video signal then in fm
phase shifting will be happen and it can be easily seen by
the eyes in t.v and it requires a larger bw. amplitude
,colors,contrasts can be easily adjust in am so we are using
am in transmitting video signal and where as a fm is used in
audio signals........

Answer / sarada

video is a combination of frames and when dealing with
properties of frames the main one will be amplitude
(color,contrast,brightness) as one of the parameter.And
with audio signals we have to concentrate on frequeny (of
signals)

Answer / ravindar singh

1. Video signal exhibits a large bandwidth and significant
low-frequency content which suggests the use of VSB,

Answer / pratiksha

FM makes phase changes in signal that can be easily perceived by viewer as distortions, also BW requirements are more for FM hence AM is feasible

Answer / mukul pateriya

since bandwidth of video signals are
on the range of 4.5MHz .if it is modulelted
with FM .then bandwidth requirement will be more.
which should not be desire.
also video signals posses very low frequency component .
its reception needs very sharp cut off filter so VSB is
used.

What are the characteristics of an ideal op-amp.

0 Answers  

How many types of Transmission cards are in Ultra BTS?

0 Answers   NSN,

hi...i had completed B.E.in Electronics & Communication.i had applied Section Engineer in railway recruit ment 2012.I need previous year exam papers.

0 Answers   RRB,

is multiplexing used in 8085 or not ?

12 Answers   ONGC,

what is the unit of capasitance

3 Answers  

what is the difference between delegation and containership?

0 Answers   KIIT,

describe the functioning of parallel adder ? what are the adventages of parallel adder over series adder?

0 Answers  

why gmsk modulation is used in gsm?

2 Answers  

what is the difference between electrical and electronics technicions and what they do/ and for what porpose?

19 Answers   HCL, IBM,

send me cutoff of surat nit for m.tech

0 Answers   NIT,

how can power amp inc the power without inc the voltage or current values?

0 Answers  

sir, I am taking jindal written test,which will be on 19th of this month.If any body have written test paper queatins,Plz send to this mail id.. bhaskarlxm@gmail.com

1 Answers   Jindal,