Download PTU B-Tech CE 2020 Dec 3rd Sem 56072 Fluid Mechanics I Question Paper

Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (CE)- Civil Engineering 2020 December 3rd Sem 56072 Fluid Mechanics I Previous Question Paper

Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (CE) (2012 to 2017) (Sem.?3)
FLUID MECHANICS-I
Subject Code : BTCE-301
M.Code : 56072
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.
What is a manometer? How are they classified?
2.
Differentiate between Newtonian and Non-Newtonian fluids.
3.
Differentiate between forced vortex and free vortex flow.
4.
Define Centre of Buoyancy.
5.
What are Secondary or Derived quantities? Explain with an example.
6.
Define the terms Nappe and Crest.
7.
What is the difference between an Orifice and a Mouthpiece?
8.
One liter of crude oil weighs 9.6 N. Calculate its density and specific gravity.
9.
Define Pascal's law.
10. What is the difference between rotational and irrotational flow?
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SECTION-B
11. Calculate the capillary rise in a glass tube of 2.5 mm diameter, when immersed vertically in
(a) water, (b) mercury. Take = 0.0725 N/m for water, = 0.52 N/m for mercury in
contact with air. Specific gravity of mercury = 13.6 and Angle of contact = 130?.
12. The velocity potential function is given by = 5(x2? y2). Calculate the velocity components
at the point (4,5).
13. Define Vena Contracta. Derive the expression Cd = Cv? Cc.
14. What are the various conditions of equilibrium of a floating and a submerged body?
15. State Buckingham's theorem. Why is this theorem considered superior to Rayleigh's
method for dimensional analysis?
SECTION-C
16. Starting with Euler's equation of motion along a streamline, obtain Bernoulli's equation.
List all the assumptions made.
17. Show that in a venturimeter, the quantity of water passing through will be proportional to
the measured Venturi head H, if the head lost in friction is proportional to the head
difference due to increased velocity.
18. A tank has an upper cylindrical portion of 2.5 m diameter and 3 m high with hemispherical
base. Find the time required to empty it through an orifice of 8 cm diameter at the bottom,
if the tank is initially full of water. Take Cd = 0.6.
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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