Fluid Mechanics Question Paper of 3rd Semester Civil(D) Download Previous Years Question Paper 3

S.B. Roll No. _____________

FLUID MECHANICES

3rd Exam/Mech/5381/Dec’07

Duration : 4 Hrs.

Section A

1.     Fill in the blanks:

a.     The canter of pressure of an immersed surface, is the point through which the _______ pressure acts.

b.     Absolute pressure is the algebraic sum of the ______ and _____

c.      A simple manometer tube to measure moderate and high – pressures as well as ________ pressure.

d.     A flow of 1m/min = ________ litres/min

e.      Loss of head at entrance of a pipe= ________

f.       In Chezy’s formula for loss of in pipes v=cvmi where i=_______

g.     A hydraulic accumulator is device to _________ pressure energy, which may be supplied to a machine later on.

h.     A pelt on wheel is an ______ turbine used for high beads.

i.       A ______ pump is suitable for large discharge and smellier heads.  

Section –B

2.      Attempt any five questions

a.     Differentiate between ideal fluid and real fluid.

b.     Explain clearly with sketches the term centre of pressure.

c.      Water is flowing though a pipe 10cm diameter with an average velocity of 20m/sec. Determine the discharge through the pipe in litters per second.

d.     What are the different energies of moving fluid? Explain each one of them

e.      State the common defects which occur in a centrifugal pump.

f.       Differentiate between impulse turbine and reaction turbine.

Section –C

3.     Attempt any two questions

a.     A horizontal pipe 200mm diameter suddenly enlarges to 300mm diameter and then after some length it suddenly reduces to 150mm diameter. If the water flowing in the pipe be 200 liters/sec (a) Loss of head due to sudden enragement ( b) loss of head due to sudden contraction.

b.     A venturimeter has an area ratio of 9 to 1,  the larger diameter being 30cm. During the flow, the recorded pressure head in the larger section is 6.5m and that at the throat is 4.25m. if meter co-efficient is 0.99 find the discharge though the metre in litres/ sec.

c.      Explain the construction and working of the following (a) reciprocating pump (b) hydraulic ram.