# Test: Z-Transform- 2

## 20 Questions MCQ Test Topicwise Question Bank for Electrical Engineering | Test: Z-Transform- 2

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Attempt Test: Z-Transform- 2 | 20 questions in 60 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study Topicwise Question Bank for Electrical Engineering for Electrical Engineering (EE) Exam | Download free PDF with solutions
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### If, the ROC of then the ROC of x1[n]-x2[n] includes

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QUESTION: 4

The z-transform of discrete time signal x[n] = {1, 0, -1,0, 1,-1} is

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QUESTION: 5

A all pass causal LTI system is described by the difference equation:
y[n] - ay[n - 1] = bx[n] + x [n - 1]
The value of ’b’ will be

Solution:
QUESTION: 6

Consider a discrete time signal x(n) having z-transform given by if x(n) is right sided then z-transform x(z) belongs to

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QUESTION: 7

Consider a system with system function: Solution:
QUESTION: 8

Let x[n] = The ROC for the z-transform of above sequence is

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QUESTION: 9

The sequence x[n] corresponding tox (z) defined as will have the value at n = - 2

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QUESTION: 10

The direct.form-II realisation of []R filter is shown below. The transfer function is

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QUESTION: 11

A sequence of x(n) with the z-transform x(z) = z4 + z2 - 2z + 2 - 3z-4 is applied as an input to a L.T.I system with the impulse response where, the output at n = 2 is

Solution:
QUESTION: 12

Find x[n] for the case, when x(z) = Solution:
QUESTION: 13

Match List-I {x(n)} with List-II {x(z)} and select the correct answer using the codes given below the lists:
List-I
A. ∝n u(n)
B. ∝n u(-n -1)
C. ∝n u(-n-1)
D. ∝u(n)
List-II
1. 2. 3. 4. Codes Solution:
QUESTION: 14

Choose the correct option for given causal systems, stable or not
i. ii. iii.  Solution:
QUESTION: 15

Find the inverse z-transform of Solution:
QUESTION: 16

Consider discrete time signal x(n) is given by
x(n) = 4n u(n)
Also, Consider another signal Also, y(z) = x2(z)
then, y(n) is

Solution:
QUESTION: 17

Consider a z-transform of a signal x(n) value of x(1) is equal to

Solution:
QUESTION: 18

Consider a discrete time signal x(n), who use z-transform x(z) is given by, value of x(n) for n = 0 is

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QUESTION: 19

If z-transform is given by x(z) = cos(z-3), |z| > 0 the value of x is

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QUESTION: 20

The impulse response of the system in below figure. Solution: Use Code STAYHOME200 and get INR 200 additional OFF Use Coupon Code