Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 4th Sem Poly Plast Momentum Transfer Operations Previous Question Paper
Time : Three Hours
B.Tech. Fourth Semester (Polymer (Plastic) Technology) (CGS)
11108 : Momentum T ransfer Operations : 4 PP 05
?
AW - 3072
llytmmm Max. Marks : 80
Notes : 1 Answer Three questions from section A and Three questions from section B.
2 Assume suitable data wherever necessary.
3. Due credit will be given to neatness and adequate dimensions.
4. Illustrate your answer wherever necessary with the help of neat sketches.
5 Use of cell phone is strictly prohibited in examination hall. ?
6 Use only Blue or Black, re?ll 0r ink for writing the answer book.
SECTION - A
a) Explain the concept of ?uids and non-?uids. Give the classi?cation of ?uids.
b) Derive the expression for velocity pro?le of laminar ?ow of Newtonian ?uid through
cylindrical tube.
OR
a) De?ne Pascal law. Explain the principle and applications of inclined manometer and
Inverted U-tube manometer.
b) Differentiate between:-
i) Laminar ?ow and Turbulent ?ow
ii) Steady ?ow and Unsteady ?ow.
iii) Compressible ?ow and Incompressible ?ow.
3) Explain the following:
i) Heads associated with ?owing ?uid.
ii) Friction factor and equivalent length of pipe.
iii) Head loss due to sudden expansion.
b) The rate of ?ow of water through horizontal pipe is 0.25 m3/sec. The diameter of the pipe
is 20 cm. What is the velocity of water? If the diameter of the pipe is increased to 40 cm,
what will be the velocity?
OR
a) For an incompressible ?uid'm'th three dimensional steady ?ow, show that:
au/dx+6v/6y+6widz=0.
b) An oil of speci?c gravity 0.9 and viscosity 0.06 poise is ?owing through a pipe of 20 cm
diameter at the rate of 60 lit/sec. Find head lost due to friction for a 500 m length of pipe.
F ind the horse power required to maintain this ?ow.
21) Suggest the suitable ?ow meter to measure average ?ow rate of incompressible ?uid
' through the pipe. The ?ow meter should be of lower cost even though losses may be higher.
Describe its construction and working principle.
b) Carbon tetrachloride of speci?c gravity 1.6 ?ows through a pipe. The differential gauge
AW - 3072 . 1 9.10
attached to the pitot static tube shows a 76 mm de?ection of mercury. Find velocity. Assume
coef?cient of discharge for tube as 1.0.
OR
OR
10.
11.
12.
b)
a)
b)
a)_
b)
a)
b)
3)
b)
a)
h)
a)
b)
AW - 3072
Suggest the suitable ?ow meter to measure the point velocity in closed flow to determine
the velocity pro?le. Discuss its construction and working principle.
Sulphuric acid of Speci?c gravity 1.3 is ?rming through a pipe of of 50 mm. ID. A thin
lipped ori?ce, 10 mm in diameter is ?tted in the pipe and differential pressure shown by
mercury mahometer is 10 cm. Calculate weight of the acid ?ovn'ng per second. Take
coef?cient of discharge for meter as 0.6.
SECTION - B
Suggest the suitable pump and describe its construction and working for pumping of
hydraulic oil in the hydraulic circuit of injection molding machine (higher pressure
requirement).
Discuss the characteristics ot~ centrifugal pump.
0R
Discuss the following:
i) Cavitation. ii) NPSH.
A single acting reciprocating pump running at 40 rpm is discharging 1.0 m3/min of water.
The pump has a stroke of 4? cm. The diameter of the piston is 20 cm. The delivery and
suction heads are 20 m and 5 m respectively. Find slip of pump and horse power required
to drive the pump.
Derive the equation to ?nd out the temtinal settling velocity in Stokc's law region.
What are the types of ?uidization? State the applications of packed bed and ?uidized bed.
OR
Sketch the curve for pressure drop across packed bed verses gas velocity. Show loading
and ?ooding points. At what velocity would you operate the packed bed?
Explain the following terms:
i) Drag coef?cient. ii) Terminal settling velocity,
iii) Minimum ?uidization velocity
Draw the sectional view and explain the \xorking of solenoid valve.
Draw?lr} diagram 0?! differential acmimuiatnr and explain it: \N?Dl'king
OR
Draw the symbols used for following valves in hydraulic circuit:
i) 3 position, 4 way direction control valve open at centre.
ii) 3 position, 4 way direction control valve closed at centre
iii) 3 position, 4 way direction control valve tandem at centre.
Draw and explain Mcter-out ope of circuit used in plastics processing machines.
*********
F.)
'3?
This post was last modified on 10 February 2020