Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) Mechanical Engineering 2020 December 4th Sem 59131 Fluid Mechanics Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (ME) (2012 Onwards) (Sem.?4)
FLUID MECHANICS
Subject Code : BTME-403
M.Code : 59131
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
Define Bulk Modulus. How it is related to compressibility?
2.
State Pascal's law.
3.
What is meant by intensity of pressure? How it varies with depth of fluid?
4.
Write continuity equation in polar coordinates.
5.
Write the four properties of stream function.
6.
What do you mean by dimensional homogeneity and what are its applications?
7.
What is the stability criterion of submerged body?
8.
Define Stream Line, path line and streak line.
9.
Define Reynold's Number.
10. What are the various flow measurement devices?
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SECTION-B
11. Derive an expression to find metacentric height analytically.
12. Determine the total pressure on a circular plate of diameter 1.5m which is placed vertically
in water in such a way that the centre of the plate is 3m below the free surface of water.
Find the position of centre of pressure.
13. Derive continuity equation in polar coordinates.
14. The velocity potential function for a two dimensional flow is given by x(2y?l), calculate
the velocity at the point (4,5). Find the stream function at this point also.
15. Derive Euler's Equation of motion.
SECTION-C
16. The resisting force F of a plane during flight can be considered as dependent upon the
length of aircraft, velocity, air viscosity, air density and bulk modulus of air. Express the
functionality relationship between these variables and the resisting force using dimensional
analysis.
17. Discuss in detail five minor losses in pipes.
18. An orifice meter with orifice diameter 10 cm is inserted in a pipe of 20cm diameter. The
pressure gauges fitted upstream and downstream of the orifice meter gives readings of
19.62 N/cm2 and 9.81 N/cm2 respectively. Co-efficient of discharge is 0.6. Find the
discharge of water through pipe.
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 13 February 2021