SET1
SET1
USHA
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
Branch:CIVIL
Subject:FM
I - MID EXAM
Year/Sem:II/I
Max Marks: 40M
Time: 2 Hours
Answer all questions
All Questions carry equal marks
1 1 a) Define density, specific volume, weight density
2
3
4
and specific gravity.
b) Determine the density, specific weight and specific
volume of air if the specific gravity with water as
reference fluid) is 0.011614.
Find the total pressure and position of centre of
pressure on a triangular plate of base 2.4m and
height 3.6m which is immersed in water in such a
way that the plan of the plate makes an angle of 60 0
with the free surface of the water. The base of the
plate is parallel to water surface and is at a depth of
3.0m from water surface.
A 30 cm diameter pipe, conveying water, branches
into two pipes of diameters 20 cm and 15 cm
respectively. If the average velocity in the 30 cm
diameter pipe is 2.5 m/s, find the discharge in this
pipe. Also determine the velocity in 15 cm pipe if the
average velocity in 20 cm diameter pipe is 2 m/s
State and derive Bernoulli’s theorem, mentioning
clearly the assumption underlying it.
USHA
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
Branch:CIVIL
Subject:FM
I - MID EXAM
Year/Sem:II/I
Max Marks: 40M
Time: 2 Hours
Answer all questions
All Questions carry equal marks
1 1 a) Define density, specific volume, weight density
2
3
4
and specific gravity.
b) Determine the density, specific weight and specific
volume of air if the specific gravity with water as
reference fluid) is 0.011614.
Find the total pressure and position of centre of
pressure on a triangular plate of base 2.4m and
height 3.6m which is immersed in water in such a
way that the plan of the plate makes an angle of 60 0
with the free surface of the water. The base of the
plate is parallel to water surface and is at a depth of
3.0m from water surface
A 30 cm diameter pipe, conveying water, branches
into two pipes of diameters 20 cm and 15 cm
respectively. If the average velocity in the 30 cm
diameter pipe is 2.5 m/s, find the discharge in this
pipe. Also determine the velocity in 15 cm pipe if the
average velocity in 20 cm diameter pipe is 2 m/s
State and derive Bernoulli’s theorem, mentioning
clearly the assumption underlying it.
SET2
SET2
USHA
Branch:CIVIL
Subject:FM
I- MID EXAM
Year/Sem: II/I
Max Marks: 40 M
Time: 2 Hours
Answer all questions
All Questions carry equal marks
A space between two square plate (50 cm × 50 cm) is filled with
1
2
3
4
USHA
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
oil of 1cm thickness. The upper plate moves with constant
velocity of 2.5 m/s under a force 10 N. Determine the
dynamic and kinematic viscosities of the oil in poise and stokes
respectively. Take specific gravity as0.95
Obtain simplified expressions for the centre of
pressure of vertical planes.
i) Plate, ii) Circle and iii) triangle.
A velocity potential function for two dimensional
steady state flows is given by φ = x (2y-1) Find out
the velocity at the point P (2, 3) .Also find out the
value of stream function passing through the point
P.
A Water pipe changes in diameter from 400mm at
section A to 800mm at section B which is 7 m
above. The pressures at A and B are 100 KPa and
75 KPa respectively. The discharge is 400
litres/sec. Find the direction of flow.
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
Branch: CIVIL
Subject:FM
I- MID EXAM
Year/Sem:II/I
Max Marks: 40 M
Time: 2 Hours
Answer all questions
All Questions carry equal marks
A
space
between
two
square
plate (50 cm × 50 cm) is filled with
1
2
3
4
oil of 1cm thickness. The upper plate moves with constant
velocity of 2.5 m/s under a force 10 N. Determine the
dynamic and kinematic viscosities of the oil in poise and stokes
respectively. Take specific gravity as0.95
Obtain simplified expressions for the centre of
pressure of vertical planes.
i) Plate, ii) Circle and iii) triangle.
A velocity potential function for two dimensional
steady state flows is given by φ = x (2y-1) Find out
the velocity at the point P (2, 3) .Also find out the
value of stream function passing through the point P
A Water pipe changes in diameter from 400mm at
section A to 800mm at section B which is 7 m above.
The pressures at A and B are 100 KPa and 75 KPa
respectively. The discharge is 400 litres/sec. Find the
direction of flow.
SET3
USHA
Branch:CIVIL
I - MID EXAM
Max Marks: 40M
Subject:FM
Year/Sem:II/I
Time: 2 Hours
Answer all questions
All Questions carry equal marks
1 a) Explain surface tension? Derive the expression for
2
3
4
SET3
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
excess pressure in a soap bubble.
b) Find the height through which water rises by
capillary action in a glass tube of 2mm bore if the
surface tension at the prevailing temperature is 0.075
N/m.
Derive an expression for total pressure and the depth
of centre of pressure from free surface of liquid of an
vertical plane surface submerged in the liquid.
Distinguish between: i) Steady flow and un-steady
flow, ii) Uniform and non-uniform flow, iii)
Compressible and incompreesible flow and iv)
Rotational and irrotational flow
30 cm x 15 cm venturimeter is provided in a vertical
pipe line carrying oil of specific gravity 0.9, the flow
being upwards. The difference in elevation of the
throat section and entrance section of the
venturimeter is 30 cm. the differential U tube
mercury manometer shows a gauge deflection of 25
cm. Calcualte the (i) the discharge of oil, and (ii) the
pressure diffrenece between the entrance section and
throat section. Take the coefficient of meter as
0.98 and specific gravity of mercury as 13.6.
USHA
RAMA COLLEGE OF ENGINEERING & TECHNOLOGY
Branch:CIVIL
I - MID EXAM
Max Marks: 40M
Subject:FM
Year/Sem:II/I
Time: 2 Hours
Answer all questions
All Questions carry equal marks
1 a) Explain surface tension? Derive the expression for
2
3
4
excess pressure in a soap bubble.
b) Find the height through which water rises by
capillary action in a glass tube of 2mm bore if the
surface tension at the prevailing temperature is 0.075
N/m.
Derive an expression for the depth of centre of
pressure from free surface of liquid of an inclined
plane surface submerged in the liquid.
Distinguish between: i) Steady flow and un-steady
flow, ii) Uniform and non-uniform flow, iii)
Compressible and incompreesible flow and iv)
Rotational and irrotational flow
30 cm x 15 cm venturimeter is provided in a vertical
pipe line carrying oil of specific gravity 0.9, the flow
being upwards. The difference in elevation of the
throat section and entrance section of the
venturimeter is 30 cm. the differential U tube
mercury manometer shows a gauge deflection of 25
cm. Calcualte the (i) the discharge of oil, and (ii) the
pressure diffrenece between the entrance section and
throat section. Take the coefficient of meter as
0.98 and specific gravity of mercury as 13.6.