Seat No.: Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE - SEMESTER- III(OLD) EXAMINATION - SUMMER 2019Subject Code: 130602 Date:04/06/2019
Subject Name: Fluid Mechanics
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
--- Content provided by FirstRanker.com ---
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) State and prove Pascal’s law. 07
(b) Describe different types of fluids. 07
--- Content provided by FirstRanker.com ---
Q.2 (a) What is manometer? Describe a differential manometer with sketch? 07
(b) The pressure intensity at a point in a fluid is given 5 N/cm². Find the corresponding height of fluid when fluid is (i) water (ii) oil of sp. Gravity=0.80 and (iii) kerosene of sp. Gravity = 0.74 07
OR
(b) Determine the dynamic viscosity of oil used for lubrication between a square plate 0.9m X 0.9m and an inclined plane inclined at 30°. The weight of square plate is 400 N and it slide down the inclined plane with a uniform velocity of 0.4 m/sec. Thickness of oil film is 1.5 mm. 07
Q.3 (a) Derive an expression for the total pressure and position of centre of pressure on a plane surface immersed vertically in a liquid. 07
--- Content provided by FirstRanker.com ---
(b) Explain how you will determine the meta-centre height of a floating body experimentally? Explain with neat sketch. 07OR
(a) State the Bernoulli’s equation and obtain Bernoulli’s equation from Euler’s equation of motion. 07
(b) A circular plate of 2.5 m diameter is immersed in water in such a way that its greatest and least depth below free surface is 3.5 m and 1.5 m respectively. Determine the total pressure on one face of the plate and position of the center of pressure. 07
Q.4 (a) What is venturimeter? Derive an expression for discharge through a venturimeter. 07
--- Content provided by FirstRanker.com ---
(b) Define the equation of continuity. Obtain an expression for continuity. 07OR
(a) Define force of buoyancy and meta-centre. Discuss the conditions of equilibrium for floating and sub-merged bodies with neat sketches. 07
(b) Classify different types of orifices and write down the equations for hydraulic coefficients used in it. 07
Q.5 (a) Give classification of notches and weirs. Derive equation for the flow over a triangular notch. 07
--- Content provided by FirstRanker.com ---
(b) The stream function for a two -dimensional flow is given by ¥=2xy, calculate the velocity at the point P (2, 3). Find the velocity potential function ¢. 07OR
Q.5 (a) Water is flowing from a tapered pipe having diameters 350mm and 200mm at section 1 and 2 respectively. The flow rate through the pipe is 0.05m3/sec. The section 1 is 10m above the datum and section 2 is 5m above the datum. If intensity of pressure at section 1 is 0.5MPa, find intensity of pressure of section 2. 07
(b) Obtain the general energy equation for compressible flow. 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---