Control Systems Z Transform Online Exam Quiz
Control Systems Z Transform GK Quiz. Question and Answers related to Control Systems Z Transform. MCQ (Multiple Choice Questions with answers about Control Systems Z Transform
The region of convergence of the z-transform of a unit step function is:
Options
A : |z|>1
B : |z|<1
C : (Real part of z)>0
D : (Real part of z)<0
The ROC of z-transform of the discrete time sequence x(n) = is:
Options
A : 1/3>|z|<1/2
B : |z|>1/2
C : |z|<1/3
D : 2>|z|<3
If the region of convergence of x1[n]+x2[n] is 1/>|z|<2/3, the region of convergence of x1[n]-x2[n] includes:
Options
A : 1/3>|z|<3
B : 2/3>|z|<3
C : 3/2>|z|<3
D : 1/3>|z|<2/3
The discrete-time signal x (n) = (-1)n is periodic with fundamental period
Options
A : 6
B : 4
C : 2
D : 0
A sequence x (n) with the z-transform X (z) = Z4 + Z2 – 2z + 2 – 3Z-4 is applied to an input to a linear time invariant system with the impulse response h (n) = 2? (n-3). The output at n = 4 will be:
Options
A : -6
B : Zero
C : 2
D : -4
Which one of the following is the correct statement? The region of convergence of z-transform of x[n] consists of the values of z for which x[n] is:
Options
A : Absolutely integrable
B : Absolutely summable
C : Unity
D : <1
H (z) is discrete rational transfer function. To ensure that both H(z) and its inverse are stable:
Options
A : Poles must be inside the unit circle and zeros must be outside the unit circle
B : Poles and zeroes must be inside the unit circle
C : Poles and zeroes must be outside the unit circle
D : Poles must be outside the unit circle and zeros must be inside the unit circle
Z and Laplace transform are related by:
Options
A : s = ln z
B : s =ln z/T
C : s =z
D : s= T/ln z
Two sequences x1 (n) and x2 (n) are related by x2 (n) = x1 (- n). In the z- domain, their ROC’s are
Options
A : The same
B : Reciprocal of each other
C : Negative of each other
D : Complements of each other
The frequency of a continuous time signal x (t) changes on transformation from x (t) to x (? t), ? > 0 by a factor
Options
A : ?
B : 1/?
C : ?2
D : ?
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