Download GTU BE/B.Tech 2017 Winter 7th Sem New 2170914 Digital Signal Processing Departmental Elective Ii Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 7th Sem New 2170914 Digital Signal Processing Departmental Elective Ii Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2170914 Date:02/11/2017

Subject Name: Digital Signal Processing(Departmental Elective - II)

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

1. Figures to the right indicate full marks.


MARKS

Q.1 (a) Differentiate: Analog and digital signal processing. 03
(b) Define 1) Signal 2) System 3) Sampling (4) Quantization
Give example of each.
04
(c) What is pipelining? Explain with reference to DSP. What is
interlocking? State need of interlocking in brief.
07

Q.2 (a) What is ROC in z transform? What is its importance? 03
(b) Discuss interconnection of LTI systems. 04
(c) State and prove the relationship between z-transform and discrete
time Fourier transform.
07
OR
(c) State and prove properties of Fourier transform. 07
Q.3 (a) Explain the following terms with respect to Digital Signal Processor:
1) MAC
03
(b) Explain DIT algorithm. 04
(c) State and prove Parseval?s relation for DTFT. 07
OR
Q.3 (a) Draw the block diagram of basic generic harward architecture for a
Signal processor.
03
(b) Define the following terms:
1) Impulse Response 2) Convolution 3) Correlation 4) Aliasing
04
(c) State basic structures of IIR systems. Also explain realization of
direct form I structure.
07
Q.4 (a) Determine which of following signal is periodic.
(1) x1(t) = sin 10 ?t (2) x2(t) = sin 3 ?t

03
(b) Explain General Application of DSP. 04
(c) Define cross correlation and auto correlation. Find out correlation of
sequences.
X(n)={2, 1, 3, 7, 1, 2,-3}, y(n)={1, -1, 2, -2, 4, 1, -2, 5}

07
OR
Q.4 (a) (1) Determine the z-transform of the signal
x(n) = ?(n+1)+6 ?(n)+12 ?(n-3) )- ?(n-4)
03
(b) Find the convolution of x(n) = (e)^(-n2 ) and h(n) = 3n2 for all n. 04
(c) Write short note on: Hilbert Transform.


07
Q.5 (a) State Properties of DFT 03
(b) State and prove Final Value theorem for Z-transform 04
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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2017
Subject Code: 2170914 Date:02/11/2017

Subject Name: Digital Signal Processing(Departmental Elective - II)

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

1. Figures to the right indicate full marks.


MARKS

Q.1 (a) Differentiate: Analog and digital signal processing. 03
(b) Define 1) Signal 2) System 3) Sampling (4) Quantization
Give example of each.
04
(c) What is pipelining? Explain with reference to DSP. What is
interlocking? State need of interlocking in brief.
07

Q.2 (a) What is ROC in z transform? What is its importance? 03
(b) Discuss interconnection of LTI systems. 04
(c) State and prove the relationship between z-transform and discrete
time Fourier transform.
07
OR
(c) State and prove properties of Fourier transform. 07
Q.3 (a) Explain the following terms with respect to Digital Signal Processor:
1) MAC
03
(b) Explain DIT algorithm. 04
(c) State and prove Parseval?s relation for DTFT. 07
OR
Q.3 (a) Draw the block diagram of basic generic harward architecture for a
Signal processor.
03
(b) Define the following terms:
1) Impulse Response 2) Convolution 3) Correlation 4) Aliasing
04
(c) State basic structures of IIR systems. Also explain realization of
direct form I structure.
07
Q.4 (a) Determine which of following signal is periodic.
(1) x1(t) = sin 10 ?t (2) x2(t) = sin 3 ?t

03
(b) Explain General Application of DSP. 04
(c) Define cross correlation and auto correlation. Find out correlation of
sequences.
X(n)={2, 1, 3, 7, 1, 2,-3}, y(n)={1, -1, 2, -2, 4, 1, -2, 5}

07
OR
Q.4 (a) (1) Determine the z-transform of the signal
x(n) = ?(n+1)+6 ?(n)+12 ?(n-3) )- ?(n-4)
03
(b) Find the convolution of x(n) = (e)^(-n2 ) and h(n) = 3n2 for all n. 04
(c) Write short note on: Hilbert Transform.


07
Q.5 (a) State Properties of DFT 03
(b) State and prove Final Value theorem for Z-transform 04
2
(c) Explain the structures for realization of FIR systems. 07
OR

Q.5 (a) For the system described by y(t) =x(2t) , determine whether the
system is
(i) Stable (ii) causal
03
(b) Find the Z-transform and ROC of x (n) = (a)^n u(n). 04
(c) Discuss the concept of zero input limit cycle oscillation. How this
can be eliminated?
07

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