Diploma-Diploma Mechanical Engineering 3rd Sem Fluid Mechanics and Hydraulic Machines(Gujarat Technological University-2013)
Thursday, 29 August 2013 07:20anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGG.- SEMESTER–III EXAMINATION – WINTEER 2012
Subject code: 331901 Date: 07/01/2013
Subject Name: Fluid Mechanics and Hydraulic Machines
Time: 2:30 pm – 5:00 pm Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is Authentic
Q.1 (a) Define the following term.
(1) fluid. (2) specific volume. (3) specific gravity (4)Dynamic viscosity (5)Bulk modulus of elasticity. (6) Kinematic viscosity (7)Specific weight 07
(b) The Diameter of pipe at first end is 10 cm and other end is 15 cm.find the discharge through pipe if the velocity of water flowing through first end is 5 m/s and also find the velocity at other end. 07
Q.2 (a) Classify the pressure measuring device. Explain burdon tube pressure guage. 07
(b) State and derive Pascal’ s law of pressure. 07
OR
(b) State and Explain different types of fluid flow. 07
Q.3 (a) State and derive Bernoulli’s equation & it’s limitation. 07
(b) The head of water over a rectangular notch is 900 mm. The discharge is 300 litre/s.Find the length of the notch. Take cd =0.62 (07)
OR
Q.3 (a) Derive expression for finding out discharge through venturimeter. 07
(b) A pipe whose diameter at point A is 30 cm and at point B is 40 cm. point A and point B is 3m and 7m above from datum respectively. rate of flow is 0.7 m3/s. If pressure at point A is 5m of water then find the pressure at point B in N/m2. 07
Q.4 (a) Explain about Water hammer and Surge tank. 07
(b) Differentiate between following
(i) Impulse turbine & Reaction turbine.
(ii) Francis turbine & Kaplan turbine. 07
OR
Q. 4 (a) Derive expression of the force, workdone,& efficiency due to impact of jet on flat vertical moving plate. 07
(b) Describe the pelton wheel with neat sketch. 07
Q.5 (a) Explain the construction, working principle and application of Hydraulic Intensifier with neat sketch. 07
(b) the construction and working of Centrifugal pump with the help of neat sketch. 07
OR
Q.5 (a) What is pneumatics ? write four uses,four advanges & four disadvanges of neumatic system . 07
(b) Write the faults,causes and remedies for pumps.what precaution should be taken for pumps ? 07
| Earning: ₹ 6.05/- |
