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This mock test of Z-Transform - 2 for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam.
This contains 20 Multiple Choice Questions for Electrical Engineering (EE) Z-Transform - 2 (mcq) to study with solutions a complete question bank.
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QUESTION: 1

The z-transform of F(z) of the function f(nT) = a^{nT} is

Solution:

QUESTION: 2

The ROC of z-transform of the sequencemust be

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QUESTION: 3

If, the ROC of then the ROC of x_{1}[n]-x_{2}[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:

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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) = z^{4} + z^{2} - 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) =

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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. ∝^{n }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) = 4^{n} u(n)

Also,

Consider another signal

Also, y(z) = x^{2}(z)

then, y(n) is

Solution:

QUESTION: 17

Consider a z-transform of a signal x(n)

value of x(1) is equal to

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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[12] is

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QUESTION: 20

The impulse response of the system in below figure.

Solution:

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