discussing the answers

discussing the answers

Postby karthika » Thu May 12, 2011 9:47 pm

Could I please know the answers for gate exam 2011 ece department
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Re: discussing the answers

Postby CustardApple » Thu May 12, 2011 11:58 pm

You just want the key or even the solution?

If you want the key, go to any coaching institute website. They will give you the key.
But if you want the solution, I dont know any place which will give you. But you can ask here and we can help you in giving the solution ;)
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Re: discussing the answers

Postby abhishekpawar » Mon Nov 14, 2011 8:49 pm

GATE 2011 : question 38:

A message m ( t ) = cos 200πt + 4 cos πt
signal modulates the carrier c ( t ) = cos 2π fc t where fc = 1 MHZ to produce an AM signal. For demodulating the
generated AM signal using an envelope detector, the time constant RC of the
detector circuit should satisfy

Ans given in solution is: 1μs << RC < 0.5 ms


fomrula is:

(1/fc)<<RC<<(1/fm)

1/fc = 1/ 1M = 1us....this is ok.. but how he got 0.5ms for (1/fm)???


Thanks
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