SS - Signals and Systems - Chapter 1

If x (-t) = -x (t) then the signal is said to be _____________

• Periodic Signal

• Non-Periodic Signal

• Even Signal

• Odd Signal

When x(t ) is said to be non periodic signal?

• If the equation x (t) = x (t + T) is satisfied for all values of T

• If the equation x (t) = x (t + T) is satisfied for only odd values of T

• If the equation x (t) = x (t + T) is satisfied for only one value of T

• If the equation x (t) = x (t + T) is satisfied for no values of T

Energy signal has zero average power and power signal has zero energy.

• True

• False

Calculate the average power of the discrete-time wave shown in fig a?

• 1

• 6

• -1

• -6

What is the total energy of rectangular pulse shown in fig b?

• 8A^2

• 4A

• 4A^2

• 2A

What is the total power of the rectangular pulse shown in fig b?

• 8A

• 0

• 4A

• 2A

Y (t) = x (2t) is ________

• Shifted signal

• Expanded signal

• Compressed signal

• Amplitude scaled signal by a factor of 2

In discrete signal, if y [n] = x [k*n] and k>1 then ______

• Samples will be increased with factor k

• Some samples are removed from x [n]

• Some samples are added to x [n]

• It has no effect on samples

Considering Figure, sketch y= 2* x (t).

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Considering Figure, sketch y= -3* x (t).

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