BTech Lab Viva Questions & Answers for CSE/ECE/ME/CE

Introduction

Lab vivas are an integral part of BTech curricula across various engineering disciplines. They assess a student’s practical understanding and application of theoretical concepts. For students in Computer Science Engineering (CSE), Electronics and Communication Engineering (ECE), Mechanical Engineering (ME), and Civil Engineering (CE), being well-prepared for these vivas is crucial. This comprehensive guide provides a curated list of common lab viva questions and answers, organized by discipline, to aid in effective exam preparation.

CSE Lab Viva Questions & Answers

1. What is a Compiler?

A compiler is a software tool that translates high-level programming code into machine language, enabling the execution of programs on a computer.Scribd

2. Explain the concept of Pointers in C.

Pointers are variables that store the memory address of another variable, allowing for dynamic memory allocation and efficient array handling.Scribd+23Scribd+23www.slideshare.net+23

3. What is the significance of the ‘void’ pointer?

The ‘void’ pointer is a generic pointer type that can point to any data type, providing flexibility in functions that handle different data types.

4. Describe the difference between ‘malloc’ and ‘calloc’.

‘malloc’ allocates a specified number of bytes of memory without initializing them, while ‘calloc’ allocates memory and initializes all bits to zero.

5. What is a Stack?

A stack is a linear data structure that follows the Last In First Out (LIFO) principle, used in function calls and expression evaluations.Scribd+1

ECE Lab Viva Questions & Answers

1. What is an Oscillator?

An oscillator is an electronic circuit that generates a continuous waveform without an input signal, commonly used in clocks and signal generators.eceschool.blogspot.com

2. Explain the Barkhausen Criterion.

The Barkhausen Criterion states that for sustained oscillations, the total loop gain must be equal to one, and the total phase shift around the loop must be an integer multiple of 360°.

3. What is the function of a Zener Diode?

A Zener diode allows current to flow in both directions but clamps the voltage to a specified value in the reverse breakdown region, making it useful for voltage regulation.

4. Define the term ‘Modulation’.

Modulation is the process of varying a carrier signal’s properties, such as amplitude, frequency, or phase, to transmit information.

5. What is the difference between Analog and Digital Communication?

Analog communication transmits information using continuous signals, while digital communication uses discrete signals, offering better noise resistance and data integrity.

ME Lab Viva Questions & Answers

1. What is the purpose of a Lathe Machine?

A lathe machine is used for shaping or machining cylindrical parts by removing material using a rotating workpiece and a stationary cutting tool.

2. Explain the concept of ‘Shear Force and Bending Moment’.

Shear force is the internal force parallel to the cross-section of a structural element, while bending moment is the internal moment that causes the element to bend.

3. What is the significance of the Stress-Strain Curve?

The stress-strain curve illustrates the relationship between stress and strain in a material, indicating its elasticity, yield strength, and ultimate tensile strength.

4. Define ‘Thermodynamics’.

Thermodynamics is the branch of physics that deals with the relationships between heat, work, and energy, governing the behavior of systems.

5. What is the difference between ‘Heat’ and ‘Temperature’?

Heat is the energy transferred between systems due to temperature difference, while temperature is a measure of the average kinetic energy of particles in a substance.

CE Lab Viva Questions & Answers

1. What is the purpose of a Surveying Level?

A surveying level is an instrument used to measure the height differences between points on the Earth’s surface, essential for construction and mapping.

2. Explain the concept of ‘Load Distribution’.

Load distribution refers to how loads are spread across a structure, affecting its stability and the design of its components.

3. What is the significance of Concrete Mix Design?

Concrete mix design determines the proportions of materials to achieve desired strength, durability, and workability in concrete.

4. Define ‘Soil Compaction’.

Soil compaction is the process of increasing soil density by reducing air gaps, enhancing its strength and stability for construction purposes.

5. What is the role of Reinforced Concrete in Construction?

Reinforced concrete combines concrete’s compressive strength with steel’s tensile strength, making it suitable for a wide range of structural applications.

Frequently Asked Questions (FAQ)

Q1: How can I prepare effectively for BTech lab vivas?
Reviewing lab manuals, understanding the underlying principles of experiments, and practicing common viva questions can enhance your preparation.

Q2: Are these questions applicable to all universities?
While these questions cover fundamental concepts, it’s advisable to refer to your specific university’s syllabus and previous year questions for targeted preparation.

Q3: How can BTech Cheatsheets assist in my exam preparation?
BTech Cheatsheets provides concise, easy-to-understand study materials, including formula sheets, concept maps, quick revision guides, and lab viva questions, helping students save time and score better in exams.

Q4: Where can I find more practice questions?
Additional practice questions can be found in university-specific lab manuals, online educational platforms, and academic forums.

Q5: How important are lab vivas in the overall grading?
Lab vivas typically contribute to a significant portion of your practical exam grade, emphasizing the importance of thorough preparation.

Conclusion

Preparing for BTech lab vivas requires a solid understanding of practical concepts and the ability to articulate them effectively. By familiarizing yourself with common questions and answers across your discipline, you can approach your vivas with confidence. Utilizing resources like BTech Cheatsheets can further streamline your study process, providing you with concise and comprehensive materials to enhance your exam readiness.

[CTA BUTTON: Access BTech Cheatsheets Now — Link: https://www.btechcheatsheets.com]