August
V62/T07063/EE/20150816
2015
Fluid Mechanics and Machinery
Instructions:
Marks-80
Time: 3 Hrs
1. All questions are compulsory.
2. “Long Answer type Question (LAQ)” is a supply type
question of 15 marks which required a typical answer of about
60-80 lines in bout 32-40 minutes.
3. “Sort Answer type Question (SAQ)” is a supply type question
of 5 marks which required a typical answer of about 15-20 lines
in bout 08-10 minutes.
4. Figures to the right indicate marks allotted to the questions.
5. Assume suitable data if necessary
6. Use a nonprogrammable type of scientific calculator is
allowed
Marks
SECTION-A
Q.1 A) Draw a labeled diagram of Vertical Micro manometer. State the
significance of reservoir used in it.
B) Difference between Simple Manometer & Differential
manometer
OR
10
05
Q.1 Explain the concept of Atmospheric pressure, Absolute pressure &
Gauge pressure.
15
Q.2 A) A venture meter is installed in a pipe line 30cm diameter. The
difference of pressure at entrance and throat read by mercury
manometer is 5cm, when water flows at a rate of 0.05 m3 /sec. If
the discharge coefficient of meter is 0.96, determine the diameter of
throat.
10
B) State the laws of fluid function for laminar flow & turbulent
flow.
OR
05
Q.2 Draw a neat sketch & explain Ventura meter. State why the length
of divergent cone is made larger.
15
Q.3 Define Dynamic Viscosity with its S.I. unit.
5
Q.4 Describe Hydraulic gradient line (H.G.L) with neat diagram.
5
SECTION-A
Q.5 Draw a neat sketch for impact of jet on a moving vertical flat plate
& write the formula to determine the work done with meaning of
each term.
OR
15
Q.5 A) Explain Francis or reaction turbine with neat diagram.
08
B) Write expression for work done in Reaction turbine.
Q.6 A) What is an Air vessel? Explain the function of the air vessel for
reciprocating pumps. Sketch the system.
B) Write the function of Air vessel on suction & delivery side.
07
10
05
OR
Q.6 A) Explain construction, working principle & applications of
double acting reciprocating pumps.
B) What is negative slip in case of reciprocating pump? When it
occurs? Also explain cavitations.
10
05
Q.7 Water is flowing through a pipe with a nozzle at one end. The
diameter of nozzle is 100 mm & head of the water at centre of
nozzle is 100m. Find force exerted by the jet on a fixed vertical
plate. Take coefficient of velocity as 0.95.
5
Q.8 Explain methods used to reduce cavitations in turbines
5
Computer Generated Random Question Paper dated: 06-07-2015 17:00:39
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