Today we are presenting previous year questions on signals & systems so this is useful for EC & EN 2nd year..
These problems are collected by BABITA RAWAT , studing in EC 2nd year.
Q1. Classify signals according to signal characteristics.
Q2. What do you understand by unit-step, unit ramp & unit impulse signal?
Q3. Differentiate b/w periodic & non-periodic signals.
Q4. Sketch the following signal
X (t) =B [u (t+2)-u (t-2)]
Q5. Show that the distinguishable range of digital frequency is of length 2π only.
Q6. With suitable examples, define the periodic & non-periodic signals.
Let x1(t) =sin (2πf1t)
& x2(t) =cos (8πf2t)
Be the two periodic signals, where f1 & f2 are two arbitrary constants. Determine the condition for which the signal
X (t) =x1(t) +x2(t)
Should also be a periodic signal?
Q7. Sketch the following signal
X (t) =A [u (t+a)-u (t-a)] for a>0
Also determine whether the given signal is a power signal or an energ...
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