PTU Punjab Technical University B-Tech May 2019 Question Papers 4th Semester Automobile Engineering
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Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(AE) (2011 Onwards) (Sem.?4)
FLUID MECHANICS AND MACHINERY
Subject Code : BTAE-403
M.Code : 54124
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. Explain the phenomena of capillarity.
b. What is a continuum? Is air a continuum?
c. Define the following and give one practical example for each: Laminar flow, Turbulent
Flow, Unsteady Flow and Uniform flow.
d. Describe the use and limitations of flow net.
e. State the conditions of Equilibrium of a floating body.
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f. State the assumptions of Bernoulli's equation.
g. What do you mean by ideal and real fluids?
h. Distinguish between steady and unsteady flow.
i. Define compressible flow.
j. Explain metacentric height.
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SECTION-B
2.
A solid cylinder of 2-meter diameter and 2-meter height is floating in water with its axis
vertical. If the specific gravity of the cylinder is 0.65, find its metacentric height and state
whether the equilibrium is stable or unstable.
3.
Drive continuity equation for a three dimensional steady or unsteady flows in cartesian
coordinate system.
4.
In a steady flow, the velocity components are : u = 2kx; v = ky and w = ?4kz. Find the
equation of streamline passing through the point (1,0,1).
5.
Prove that the stream function represents the equation for a stream line.
6.
What is a flow net? Describe any one method of drawing a flow net.
SECTION-C
7.
What do you mean by dimensionless numbers? Derive expression for any two
dimensionless numbers.
8.
Derive an expression for the loss of head due to friction in pipes.
9.
With the help of a neat diagram explain the working principle of axial pump. Draw the
characteristic curves for axial pump.
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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