PTU Punjab Technical University B-Tech May 2019 Question Papers 3rd Semester Civil Engineering (CIV)
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(CE) (2011 Onwards) (Sem.?3)
FLUID MECHANICS-I
Subject Code : BTCE-301
M.Code : 56072
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
SECTION-A
Q1
Answer briefly :
a. Describe in brief compressibility and viscosity.
b. Describe the different sub groups of non-Newtonian fluid, giving example of each.
c. Explain Pascal's Law.
d. Differentiate between Free and Forced Vortex motion.
e. Write Euler's Equation.
f. What is Metacentric Height?
g. Derive the equation of stream function.
h. Derive the equation for actual discharge in an office meter.
i. What do you understand by Kinematic Similarity?
j. How the discharge in a venturimeter will change if its orientation changes.
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SECTION-B
Q2
Explain the three conditions of equilibrium developed when a floating body is given a
sight angular displacement.
Q3
How can you describe the flow patterns and give the individual description of each
pattern.
Q4
Derive the equation of stream function and velocity potential for a uniform stream of
velocity v in a two dimensional field, the velocity v being inclined to the x-axis at a
positive angle a.
Q5
Derive Borda - Carnot equation of head loss.
Q6
Derive an expression for `Total Pressure' and `Position of Centre of Pressure' for an
inclined plane surface immersed in liquid
SECTION-C
Q7
A rectangular plate 1 m wide and 1.5 m deep is held vertically in water so that its upper
horizontal edge is 1.25 m below the free surface. Find the total water pressure on one face
of the plate and depth of centre of pressure.
Q8
A pitot tube is mounted on an airplane to indicate the relative speed of the plane. What
differential pressure intensity will the instrument register when the plane is travelling at a
speed of 200 km/hr in a wind blowing at 60 km/hr. against the direction of motion of the
plane? Take sp. wt. of air as 11.9 N/m2. Assume Cv = 0.98.
Q9
Petrol of sp.gr 0.8 flows upward through a vertical pipe. A & B are two Points in the
pipe, B being 0.3 m higher than A. Connections are led from A&B to a U-Tube
containing mercury. If differential pressure is 0.18 kg/cm2, find the reading of the
manometer.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019