Mathematics for Signal Analysis (unit 1 and 2)

Choose the range of values of time for which a Continuous time signal u(t)=0

• t<0

• t>0

• t=0

• t=-1

• t=2

Select the periodic signal

• sin wt

• u(t)

• u(t)+0.5

• u(-t)

• u(t) e-at

Calculate the fundamental period of a discrete time signal x[n]=cos[2 π n]

• 1 sec

• 2π sec

• 2 sec

• Π sec

Determine the power deliver by the signal x(t)=2cos(wt)

• P=2 Watt

• P=1 Watt

• P=0.5 Watt

• P=1.5t Watt

• P=2t Watt

Define an energy signal

• A signal with finite energy and zero power.

• A signal with finite energy and finite power.

• A signal with finite power and infinite energy.

• A signal with finite power and zero energy.

• A signal with zero power and infinite energy

Compute the fundamental period of the signal x(t)= cos((Π/4)(t-1))

• 8 sec

• 4 sec

• 0.4 sec

• 0.2 sec

• 1 sec

Identify the signal behavior when x(3t) is performed on a signal x(t).

• compressed

• expanded

• shifted

• reversed

Classify the DT system y[n]=aⁿx(n) properly

• Static and causal system

• Dynamic and causal system

• static and non-causal system

• Dynamic and non-causal system

Classify the signal x(t)=e^-2tu(t) properly

• energy signal

• energy signal and power signal

• neither energy nor power signal

• partially energy signal

• partially power signal

Test if the signal x[n]=(-1)n is periodic or not

• Periodic

• Aperiodic

• neither periodic nor aperiodic

• partially periodic

• partially aperiodic