# MATLAB Mcqs

Q:

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

Explanation: The Z-transform of the impulse response of discrete time system gives the transfer function of the system in z-domain. This can also be achieved from the impulse invariance transformation. Hence, the converse should be true and the above statement is true.

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

126
Q:

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

Explanation: Not available for this question

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

147
Q:

The Z-transform doesn’t follow the linearity principle.

 A) True B) False

Explanation: The Z-transform does follow the principles of homogeneity and superposition. Hence, the linearity principle can be applied to check if a system is linear or not in the z-domain.

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

36
Q:

The Z-transform is only for discrete signals.

 A) True B) False

Explanation: The signal needs to be a sampled sequence so that it can be represented in terms of the complex frequency z. Hence, the above statement is true.

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

34
Q:

If σ<0, the point in the z plane lies __ of the circle |z|=1.

 A) Interior B) Exterior C) On the circumference D) Nowhere near

Explanation: For σ<0, |z| is less than 1. Hence, the point lies interior to the circle |z|=1.

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

34
Q:

The R.O.C. of a unit step function is __________

 A) |z|>|1| B) Entire z plane except z=0 C) Entire z plane except z=∞ D) Does not exist

Explanation: Not available for this question

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

78
Q:

The bilateral Z-transform ranges from ____________

 A) -∞ to ∞ B) 0 to ∞ C) -∞ to 0 D) Does not exist

Explanation: Unilateral Z-Transform ranges are provided in 0 to ∞ and -∞ to 0. For Bilateral Z-transform the signal can be defined in the range given in option -∞ to ∞.

Category: Electronics & Electrical MCQs
Sub Category: MATLAB Mcqs

45
Q:

The R.O.C. of impulse function is _________

 A) The entire z-plane B) Interior to the unit circle |z|=1 C) Exterior to the unit circle |z|=1 D) Between the unit circle |z|=1 and |z|=∞