Download Tutorial Questions (signal classifications)

Tutorial Questions (signal classifications)
Q.1
DC and RMS Values for Exponential Signals
Assume that v(t) is a periodic voltage waveform as shown in Figure. Over the time
interval 0 < t < 1, v(t) is described by et . Find the dc value and the rms value of this
voltage waveform.
Q.2
A function generator produces the periodic voltage waveform shown in following
figure.
(a) Find the value for the dc voltage.
(b) Find the value for the rms voltage.
(c) If this voltage waveform is applied across a 1,000 load, what is the power
dissipated in the load?
Q.3
Determine whether each of the following signals is an energy signal or a power signal,
and evaluate the normalized energy or power, as appropriate:
T

1,...... | t |

t

2
(a) (t) =  (t/T0) (rectangular pulse  ( )  
)
T
0,...... | t |> T

2
2
(b) (t) = cos 0t
Q.4
Determine if each of the following signals is periodic. If a signal is periodic,
determine its period.
(a) cos( 3t )
(b) exp (j2t-/4)
(c) sin (2t2 )