targate test series- 7th test (ec)

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targate test series- 7th test (ec)

Postby jayantvaswani » Mon Dec 31, 2012 1:44 pm

targate 7 test paper ( offline )

paper code :- ec

problem :- q 47 ( answer given in booklet is b)

if modulation index is greater than1 , use of envelope detector is not possible . here modulation index i'snt specified . so how can we conform that am-sc signal isnt overmodulated ...answer should be d ..do reply...
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Re: targate test series- 7th test (ec)

Postby zangetsa1 » Mon Jan 07, 2013 8:05 pm

It is given that modulated signal is being detected by envelope detector . By default m<1.
and envelope is |m(t)| for DSB-SC
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