GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI (NEW) EXAMINATION - WINTER 2018
--- Content provided by FirstRanker.com ---
Subject Code:2160602 Date:20/11/2018Subject Name:Applied Fluid Mechanics
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
--- Content provided by FirstRanker.com ---
2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
Q.1 (a) Explain various types of open channels with sketch 03
(b) Write the differences between pipe flow and open channel flow? 04
(c) Enlist the major and minor loses in pipes. Derive the expression for 07
--- Content provided by FirstRanker.com ---
loss of head due to sudden contraction.Q.2 (a) Explain hydraulically smooth and rough pipes 03
(b) Define boundary layer, laminar sub-layer, displacement thickness 04
and momentum thickness
(c) Derive Darcy Weisbach formula for the loss of head due to 07
--- Content provided by FirstRanker.com ---
friction in pipe line.OR
(c) Calculate the head loss due to friction using Darcy Equation and 07
power required to maintain 60 liters per second of liquid flow
through a steel pipe 0.08 m radius and 900 m long. Take Sp. Gravity
--- Content provided by FirstRanker.com ---
of the liquid = 0.85 and co-efficient of friction f=0.0025.Q.3 (a) Write the assumptions made in derivation of the Dynamic Equation 03
of the Gradually varied flow
(b) Explain the Manning’s formula in-open channel flow 04
(c) Explain with diagram the Specific Energy Curve and Discharge 07
--- Content provided by FirstRanker.com ---
Curve and derive the mathematical expression for minimumspecific energy and maximum discharge in terms of depth of flow
OR
Q.3 (a) Define 03
(1) Cavitation (ii) Prandtl Mixing length (iii) Water Hammer
--- Content provided by FirstRanker.com ---
(b) Enlist the important applications of Navier-stoke equations 04(c) A trapezoidal channel is 4.5 m wide at bottom and has a side slope 07
of 0.5H: 1V. The bed slope of the channel is 0.0003. Find the
discharge of the most economical section. Assume Manning’s
coefficient n = (.02
--- Content provided by FirstRanker.com ---
Q.4 (a) What is priming? Why is it necessary in centrifugal pump? 03
(b) Discuss the phenomenon of boundary layer separation. 04
(c) Define the most economical channel section. Derive the condition 07
for trapezoidal channel of best section
OR
--- Content provided by FirstRanker.com ---
Q.4 (a) Derive the expression for displacement thickness. 03
(b) Define hydraulic jump? Discuss the types of jump based on 04
Froude number
(c) A Francis turbine of 0.8 metre runner diameter working under a 07
head of 3.0 metres at a speed of 150 rpm develops 80 kW when the
--- Content provided by FirstRanker.com ---
rate of flow of water is 1.6 m3 /s. If the head on the turbine is increased to 30 metres, determine the speed, power and discharge.Q.5 (a) Discuss the types of the similarities. 03
(b) Compare Impulse turbine and Reaction Turbine. 04
(c) Explain construction and working of a pelton wheel 07
OR
--- Content provided by FirstRanker.com ---
Q.5 (a) Define: Mechanical efficiency and Hydraulic efficiency 03
(b) Discuss the Distorted and Undistorted Models. What are the merits 04
and demerits of Distorted Models?
(c) Explain the Buckingham’s ni- theorem for dimensional analysis 07
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
--- Content provided by FirstRanker.com ---