ENEX 413Bachelor in Electronics, Communication and Information Engineering · Semester 71 Paper Available

Digital Signal Processing

Past examination question papers and complete curriculum syllabus for Digital Signal Processing (ENEX 413), Bachelor in Electronics, Communication and Information Engineering Semester 7 under Institute of Engineering (IOE), Tribhuvan University.

Sem 7 Subjects (6)View Full Semester Overview →

ENEX 411RF and Microwave EngineeringENEX 412RoboticsENEX 413Digital Signal ProcessingENEX 435-444Elective IIIENEX 414Project IENEX 415Wireless Communication

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Past Question Papers (PDF)

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Note: This question paper file (8th sem) was archived from an IOE exam session for the common Digital Signal Processing curriculum.

8th-sem_Digital Signal Processing.pdf

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Most Frequently Asked Questions

Top recurring IOE board exam questions for Digital Signal Processing with verified mark schemes, formula notation, and recurrence frequency.

Showing 8 of 8 top repeated questions

6 Chapters · Click any chapter to expand

Year-wise & Session-wise Exam Papers

Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Digital Signal Processing. Click any session paper to expand.

Showing 8 questions across 1 exam session papers

Institute of Engineering • 2082 Chaitra Board Examination

Q1[2 Marks]Discrete Time Signals and Systems

Define energy signal and power signal. Is the signal

x [n] = cos (\frac{π}{5} n) sin (\frac{π}{3} n)

periodic? If it is periodic, determine the fundamental period.

Q2[4 Marks]Discrete Time Signals and Systems

Find the output of an LTI system having impulse response

h [n] = {1, 3, 2, - 1, 1}

to the input

x [n] = 2 δ [n] - δ [n - 1]

Q3[5 Marks]Discrete Filter Structures

Compute the lattice-ladder coefficients for the given IIR system:

H (z) = \frac{1 + 2 z ^{- 1} + 2 z ^{- 2} + z ^{- 3}}{1 + \frac{13}{24} z ^{- 1} + \frac{5}{8} z ^{- 2} + \frac{1}{3} z ^{- 3}}

Also, comment on the stability and draw the lattice-ladder structure for the system.

Q4[2 Marks]FIR Filter Design

Define Gibb's phenomenon. The desired frequency response of a HPF is given by

$$H_d(e^{j\omega}) = \begin{cases} e^{-j3\omega} & \omega_c \leq |\omega| \leq \pi \\ 0 & |\omega| < \omega_c \end{cases}$$

Design a linear phase FIR filter using hamming window for

M = 7

and

ω_{c} = 2

rad/sample.

Q5[1 Marks]FIR Filter Design📐 Diagram in Paper

What do you understand by optimum filter? Describe Remez exchange algorithm for FIR filter design using a flowchart.

Q6[2 Marks]IIR Filter Design

Compare and contrast between impulse invariance method and bilinear transformation method. Design a digital IIR low pass filter using bilinear transformation based on Butterworth approximation to meet the following specifications: passband magnitude characteristics that is constant to within 1 dB for recurrences below

ω = 0.2 π

and stopband attenuation of at least 15 dB for frequencies between

ω = 0.3 π

and

π

. Use bilinear transformation.

Q7[5 Marks]Discrete Fourier Transform

Find 8-point DFT using DIF-FFT of the sequence

x [n] = {1, 2, 3, 2, 1}

Q8[2 Marks]Applications of Digital Signal Processing

Discuss the application of DSP in Power System Monitoring and Diagnostics. Perform the circular convolution of the following two sequences

x_{1} [n] = {1, 2, 3}

and

x_{2} [n] = {1, 2, 3, 4}

Curriculum Syllabus & Course Topics

Sourced from TU curriculum portal

Full Syllabus (PDF)

Chapter-wise Units & Micro-Syllabus Topics (7 Units)

1. Introduction to Digital Signal Processing
4
2. Discrete-Time Signals and Systems
6
3. Z-Transform and Analysis of LTI Systems
6
4. Discrete Fourier Transform (DFT) and FFT Algorithms
8
5. Implementation of Discrete-Time Systems
6
6. Design of Digital Filters (FIR and IIR)
10
7. Multirate Digital Signal Processing and Applications
5

Examination Scheme & Marks Distribution

Evaluation Structure

Final Board Theory Exam: 60 Marks (Pass mark: 24)
Internal Assessment: 40 Marks (Pass mark: 16)
Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

Review the available past examination paper to understand question styling, typical derivation topics, and marks allocation.
Practice drawing labeled circuit schematics, deriving transfer functions, and showing systematic mathematical steps.
Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.

Authentic IOE Past Papers

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Curriculum Syllabus & Marking Scheme

Past Question Papers (PDF)

8th-sem_Digital Signal Processing.pdf

Most Frequently Asked Questions

Applications of Digital Signal Processing

Discrete Filter Structures

Discrete Fourier Transform

Discrete Time Signals and Systems

FIR Filter Design

IIR Filter Design

Year-wise & Session-wise Exam Papers

Curriculum Syllabus & Course Topics

1. Introduction to Digital Signal Processing

2. Discrete-Time Signals and Systems

3. Z-Transform and Analysis of LTI Systems

4. Discrete Fourier Transform (DFT) and FFT Algorithms

5. Implementation of Discrete-Time Systems

6. Design of Digital Filters (FIR and IIR)

7. Multirate Digital Signal Processing and Applications

Examination Scheme & Marks Distribution

Evaluation Structure

Exam Preparation Guidelines