# 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 z2

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) z2/(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 5 Star
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