Signals and Systems - Engineering

Q1:

Magnitude Plot of a Composite signal x(t) = e2jt + e3jt is

A half wave rectified sinusoidal

B full wave rectified sinusoidal

C exponentially increasing sinusoidal

D exponentially decreasing sinusoidal

ANS:B - full wave rectified sinusoidal

x(t) = e2jt x(t) = 2ej2.5t cos(0.5t) The magnitude |x(t)| = 2 cos |0.5t| which is a full rectified wave.