Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (AR)- Automation-And-Robotics 2020 December 3rd Sem 76503 Fluid Mechanics And Fluid Machines Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (Automation & Robotics) (2018 Batch) (Sem.?3)
FLUID MECHANICS AND FLUID MACHINES
Subject Code : BTAR-304-18
M.Code : 76503
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
Write briefly :
1.
Define Specific Gravity.
2.
Define Surface Tension and write its units.
3.
State Bernoulli's equation.
4.
What is the difference between laminar and turbulent flow?
5.
What are the advantages of model testing?
6.
What is cavitation in pumps?
7.
Define Mechanical Efficiency in turbine.
8.
State various losses in pipes.
9.
State the function of draft tube in turbines.
10. What is negative slip in reciprocating pump?
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SECTION-B
11. The water is flowing through a tapering pipe having diameter 300mm and 150 mm at
sections 1 and 2 respectively. The discharge through the pipe is 40 litre/sec. The section 1
is 10m above datum and section 2 is 6m above datum. If pressure at section 1 is 400kN/m2,
find pressure at section 2.
12. Differentiate between Francis turbine and Kaplan turbine.
13. Discuss Buckingham's pi theorem for solving dimensional analysis problem.
14. A Pelton wheel is receiving water from a penstock with a gross head of 510 m. One-third
of gross head is lost in friction in the penstock. The rate of flow through the nozzle fitted at
the end of the penstock is 2.2 m3/s. The angle of deflection of the jet is 165 degree.
Determine the power given by water to runner by assuming speed ratio 0.45 and coefficient
of velocity 1.
15. Derive an expression for specific speed of turbine.
SECTION-C
16. A liquid of viscosity 0.9 poise is filled between two horizontal plates 10 mm apart. If the
upper plate is moving at 1m/s with respect to the lower plate which is stationary and the
pressure difference between two sections 60 m apart is 60 kN/m2, determine :
a) The velocity distribution
b) The discharge per unit width
c) The shear stress on the upper plate.
17. Discuss in detail main characteristic and operating characteristic curves of centrifugal
pump.
18. Discuss in detail with diagram the working of single acting reciprocating pump.
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