1. What is fluid mechanics?
A.
Study of fluid behavior at rest
B.
Study of fluid behavior in motion
C. Study of fluid behavior at
rest and in motion
D. Study of fluid behavior
neither at rest nor in motion
1. C
3. Which of the following is true about the
Hydrostatic law...
A.
Pressure varies constant with depth
B.
Pressure varies linearly with depth
C.
Pressure varies exponentially with depth
D. None
of the above
3. B
5. The highest Viscosity among the following
is of
A. water
B. oil
C. Honey
D. Blood
5. D
6. The velocity distribution for laminar flow through a circular pipe
A.
Is constant over the cross-section
B.
Varies linearly from zero at walls to
maximum at the center
C.
Varies parabolically with a maximum at the
center
D.
None of the above
6. C
7.
The major loss of energy in long pipes is due to
A.
Sudden enlargement
B.
Sudden contraction
C.
Gradual contraction or enlargement
E. Friction
8. D
14.
What happens to velocity in the diverging duct?
A.
Acceleration
B.
Deceleration
C.
Constant speed
D.
Zero
14.B
19.
What is the Bernoulli's equation used for?
A.
To calculate the pressure drop in a pipe.
B.
To calculate the velocity of a fluid in a
pipe.
C.
To calculate the flow rate of a fluid in a
pipe.
D.
To relate pressure, velocity, and
elevation in a fluid.
19.
D
20.
What is the difference between laminar and turbulent flow?
A.
Laminar flow is smooth and orderly, while
turbulent flow is chaotic and irregular.
B.
Laminar flow has high Reynolds number,
while turbulent flow has low Reynolds number.
C.
Laminar flow occurs at high velocities,
while turbulent flow occurs at low velocities.
D.
Laminar flow is more viscous than
turbulent flow.
E. 38. Falling water drop becomes sphere is due to
property of…
F. A.
Compressibility of water
B. Surface tension of water
C. Capillarity of water
D. Viscosity of water
20 A
40. The U
tube in the figure contains two liquids in static equilibrium. The water of
density 
w
=100kg/m3 is in the right arm and
oil of unknown density x
is in the left arm. If L = 80m and d = 20mm, then density x
of the oil is
A. 1000 kg/m3
B. 200 kg/m3
C. 600 kg/m3
D. 800 kg/m3
40 B
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