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Question
What is sampling theorem?
 Question Submitted By :: Electronics-Communications
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
at the time of sampling the signal,it satisfies the niquist
criteria(fs>2f,fs=sampling freq&f=signal freq)
 
Is This Answer Correct ?    89 Yes 24 No
Simi
 
Answer
# 2
@ minu priya : m sorry but i think you mis-typed it,
instead of the highest freq component u wrote sampling freq
component .. so the real thing is that " whenever a signal
is being sampled, the sampling frequency has to be greater
than the highest frequency component of the message signal
to avoid any loss of information during sampling process" if
this condition is not satisfied, it leads to certain loss of
information. this condition, i.e ( Fs >= 2Fm ) is called the
nyquist rate.
 
Is This Answer Correct ?    65 Yes 8 No
Poonam
 
 
 
Answer
# 3
Sampling therom means the sampling frequency must be grater than or equal to Double the signal frequency. this is alsi must be shown as,

Fs >= 2f.
 
Is This Answer Correct ?    48 Yes 8 No
Anil
 
Answer
# 4
@poonam: You've made a typo as well. Sampling frequency should be greater than twice the highest frequency in the message. 
Is This Answer Correct ?    20 Yes 6 No
Meera
 
Answer
# 5
sampling is a reduction of the continous signal into a
discrete signal
 
Is This Answer Correct ?    19 Yes 7 No
Raghavendra
 
Answer
# 6
Sampling theorem means,The sampling rate of the sampled
signal should be >= to Nyquist rate.Where Nyquist rate means
twice of the max of signal frequency .We can reconstruct the
original signal from the samples at the receiver end only
when the condition(Above) is met.
EX:Let the signal,that u want to sample, max frequency is 20kHZ.
Then Nyquist rate is 2*20kHZ=40kHZ.

Then the sampling rate is >=40kHZ.But generally sampling
rate units are mentioned as "Samples per Sec(Samples/sec)".
So for above example sampling rate is 40,000 samples/sec,if
sampling rate is equal to Nyquist rate.
 
Is This Answer Correct ?    17 Yes 7 No
Rajesh
 
Answer
# 7
Sampling theorem defined as sampling freq rate must double or equal to the signal freq to get orginal signal it is given by fs is equal to or twice of f. 
Is This Answer Correct ?    10 Yes 6 No
Ramesh Kamagouda
 
Answer
# 8
samplin theorem says that a continous time signal may be
completely in its samples and recovered back if the samplig
frequency is fs>=2fm. here fs is the sampling frequency and
fm is the maximum frequency present in the signal
 
Is This Answer Correct ?    2 Yes 0 No
Pummy Rawal
 
Answer
# 9
Sampling is the process of converting a signal from analog to digital in frequency domain.. the signal should satisfies the nyquist condition., I.e., fs is greater than or equal to 2fm.. 
Is This Answer Correct ?    2 Yes 0 No
K.mayaduraikrishnan
 
Answer
# 10
sampling theorem only for band limited signals only.
Sampling theorem
A bandlimited signal can be reconstructed exactly if it is
sampled at a rate atleast twice the maximum frequency
component in it.
 
Is This Answer Correct ?    1 Yes 0 No
Ranjith
 

 
 
 
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