# Z Transform – 2 MCQ’s

This set of MATLAB Multiple Choice Questions & Answers (MCQs) focuses on “Z Transform – 2″.

1. The impulse response of a discrete time system is the inverse Z-transform of the transfer function of the system in z-domain.

a) True

b) False

2. The unit delay operator can be thought of in the z-domain as ___________

a) Multiplication by z^{-1}

b) Multiplication by z

c) Multiplication by z^{-2}

d) Multiplication by z^{2}

3. What will be seen in the scope if the step time is 1 second in the following Simulink Model?

a) A unit step signal delayed by 2 units in time

b) u[n-3]

c) A ramp function

d) An impulse function

4. The convolution of a signal in time domain can be viewed as __________

a) Multiplication in z-domain

b) Squaring in z-domain

c) Doubling the signal in z-domain

d) Convolution in z-domain

5. What will be seen in the scope if the step time is 0 seconds in the following Simulink Model?

a) A unit step signal delayed by 2 units in time

b) u[n-3]

c) A ramp function

d) An impulse function

6. How much does the delay change, if the step time is taken as two units in time, in r(t-m), in scope 1 and 3?

a) 1 and 3

b) 2 and 3

c) 3 and 1

d) Error

7. What will be seen in the Scope if the step time is 0 seconds in the following Simulink Model and the limit of x axis is n=10?

a) A delayed ramp function

b) r[n-1]

c) r[n-2]

d) Error

8. This is the output of scope1.

What is the transfer function1?

a) z/(z-1)^{2}

b) z^{2}/(z-1)^{2}

c) A parabola

d) A impulse function

9. What will be seen in the scope?

a) A ramp function

b) A step function

c) A parabola

d) A hyperbola

10. The Discrete Transfer Fcn1 is using a ramp function.

a) True

b) False

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