## Fluid Mechanics and Machinary, Question Paper of B.Tech 4th Semester,Download Previous Years Question Paper 6

• Wednesday, October 26, 2016
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Roll No. ......................
Total No. of Questions : 09]
B.Tech. (Sem. – 4th)
FLUID MECHANICS AND MACHINARY
SUBJECT CODE : AE – 206
Paper ID : [A0711]
Time : 03 Hours
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying
TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and
students has to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and
students has to attempt any TWO questions.
SECTION-A
a. If K(bulk modulus of water) = 2.2GPa. What pressure is required to
reduce the volume by 0.5% ?
b. Differentiate between simple manometer and differential manometer
with neat sketches.
c. In what way a fluid contained in a vessel moving with constant
acceleration comes under the purview of hydrostatics?
d. Differentiate between tangential and normal acceleration.
e. Define free and forced vortex motions.
f. Why a triangular weir is more suitable than a rectangular weir for
measuring the discharge?
g. Write expressions for Mach number and Froude number. Explain the
physical significance of both the numbers.
i. What is difference between hydraulic coupling and torque converter?
j. What is the difference between tangential and radial flow turbines?
SECTION-B
2. A differential manometer is connected to two pipes whose centres are 3m
difference in height. Higher level pipe is carrying liquid of specific gravity
of 1.5 at a pressure of 1.8 bar and another pipe is carrying liquid at
specific gravity of 0.9 at a pressure of 1 bar. The centre of pipe carrying
low pressure liquid is 2m above the higher level of the mercury in the
manometer. Find out the difference in mercury level in the manometer
in cm.
3. Derive an expression for discharge from a vertical venturimeter.
4. Draw a neat sketch of hydraulic intensifier and explain its working.
5. The discharge over a spillway provided on the dam depends upon v,
(velocity of flow), L(depth of the throat), H (water head on spillway) and
g (acceleration due to gravity). Using Buckingham’s -theorem, show
that
6. Derive an expression for Momentum correction factor.
SECTION-C
7. Two tanks 2.5 km long are connected by a pipe of 30 cm diameter. The
water level difference between two tanks is 10 m. Find the diameter of
another pipe which would provide twice the discharge of the first. Consider
f is same in both the cases and consider only frictional losses in both
cases.
8. A closed cylindrical vessel 1 m diameter and 2 m high is completely filled
with oil whose specific gravity is 0.85. It is rotated at 120 rpm. Find the
total pressure at the top, at the bottom and side of the vessel.
9. Write short notes on the following :
i) Discharge through a mouth piece
ii) Rotameter

iii) Hydraulic accumulator