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WorksheetsSS - Signals and Systems - Chapter 1
Total questions: 25
Worksheet time: 25mins
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).
Considering Figure, sketch y= -3* x (t).
In the following diagram, X [n] and Y [n] are related by ______
Y [n] = x [-2n]
Y [n] = x [2n]
Y [n] = -2*x [n]
Y [n] = 2*x [n]
X [n] and y [n] are as shown below, the relationship between x [n] and y [n] is given by ______
X [n] = y [n/3]
X [n] = y [3*n]
Y [n] = x [n]/3
Y [n] = 3*x [n]
Considering the figure, is y [n] = x [2n]?
True
False
Considering figure, is y [n] = x [n/2]?
True
False
The given pair x (t) and y (t) is _______
Y (t) = ∫x (t) dt
Y (t) = d/dt (x (t))
Y (t) = x (t) -1
Y (t) = x (t) /2
The given pair x (t) and y (t) is related by _______
Y (t) = d/dt (x (t))
Y (t) = x (t) + 1
Y (t) = ∫x (t) dt
Not related
A signal is a power signal if the signal has average power equal to __________
Infinite
One
Finite
Zero
Which one of the following systems is causal?
y(t)=x(t)+x(t-3)+x(t2)
y(n)=x(n+2)
y(t)=x(t-1)+x(t-2)
y(n)=x(2n2)
The step function u (t) is integral of _______ with respect to time t.
Ramp function
Impulse function
Sinusoidal function
Exponential function
Unit impulse ∂(t) is _____ of time t.
Odd function
Even function
Neither even nor odd function
Odd function of even amplitude
Exponentially damped sinusoidal signal is ______
Periodic
Non periodic
Insufficient information
Maybe periodic
Discrete-time signals are _________________
Continuous in amplitude and continuous in time
Continuous in amplitude and discrete in time
Discrete in amplitude and discrete in time
Discrete in amplitude and continuous in time
Determine the product of two signals: x1 (n) = {2,1,1.5,3}; x2 (n) = { 1,1.5,0,2}
{ 2 , 1.5 , 0 , 6 }
{ 2 , 1.5 , 6 , 0 }
{ 2 , 0 , 1.5 , 6 }
{ 2 , 1.5 , 0 , 3 }
The range for unit step function for u(t – a), is ________
t < a
t ≤ a
t = a
t ≥ a
Unit Impulse function is obtained by using the limiting process on which among the following functions?
Triangular Function
Rectangular Function
Signum Function
Sinc Function
