About this previous year paper
This question paper evaluates the student’s understanding of Fluid Mechanics, covering fundamental concepts, mathematical formulations, and application-based problems. The paper is divided into three structured sections — A, B, and C, each designed to test different levels of learning: basic understanding, analytical ability, and problem-solving skills.
SECTION A — Short Answer Questions (20 Marks)
This section consists of 10 brief questions, each carrying 2 marks, aimed at testing conceptual clarity on topics such as:
No-slip condition
Fluid properties such as density, specific volume, and relative density
Flow descriptions like path line, streak line, laminar boundary layer
Types of flows: reversible, turbulent
Similarity requirements and dimensionless numbers
Assumptions of Euler’s equation
Students are expected to give concise definitions, differences, or basic explanations.
SECTION B — Analytical/Descriptive Questions (30 Marks)
Students must attempt any three out of five questions. Each question carries 10 marks and requires:
Application of theories such as hydrostatic variation with altitude
Solving fluid kinematics problems
Use of Bernoulli's equation in orifice/venturimeter flows
Velocity distribution in laminar flows between plates
Dimensional analysis (Buckingham π theorem) for discharge over rectangular weir
This section checks the ability to derive equations, conduct numerical calculations, and apply scientific principles.
SECTION C — Long Answer/Problem-Solving Questions (50 Marks)
This section contains five parts, and students must attempt one question from each part.
Each question carries 10 marks, covering:
Part 3 — Buoyancy & Stability
Stability conditions of floating bodies
Application to cylinders and conical bodies
Part 4 — Stream Function & Potential Function
Orthogonality proof
Derivation of stream function from velocity field
Part 5 — Unsteady Flow & Pipe Flow
Time to fill tanks with inflow and orifice outflow
Complex pipeline distribution with flow extraction
Part 6 — Vortex Flow / Laminar Flow
Force vortex liquid rise and fall proof
Laminar pipe flow velocity distribution
Part 7 — Drag & Dimensional Analysis / Manning’s Formula
Derivation of drag coefficient from Stokes law
Model-prototype similarity for open channel flow
These questions assess deep conceptual understanding, mathematical derivations, and engineering problem-solving capability.
Overall Purpose of the Paper
This exam is designed to:
Assess foundational knowledge of fluid properties and classifications
Check understanding of flow kinematics, dynamics, and measurement techniques
Test abilities in solving numerical and theoretical engineering problems
Evaluate understanding of fluid-structure interactions, pipe flow, and model laws.