Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 2 (Q.No. 31)
31.
If a signal f(t) has energy E, the energy of the signal f(2t) is equal to __________ .
Answer: Option
Explanation:
Energy content of a signal x(t), E = 
|f(t)|2 dt
Now, E' = |f(2t)|2 dz for signal f(2t)
Putting 2t = z, we get
E' = 
|f(t)|2 dz = 
.
Discussion:
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