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Online Tests
ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers
Question # 1
The direction of the streamlines is the same as the direction of the
Choose an answer
force
torque
velocity
weight
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Question # 2
Blood pressure is measured in torr. Which of the following units could belong to torr?
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N m
-1
N m
-2
N m
N
-1
m
-2
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Question # 3
The SI unit of viscosity is
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kg m
-1
s
-1
kg ms
-1
kg m
-1
s
-2
kg m
-1
s
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Question # 4
Blood has a density
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Equal to water
Greater then water
Lesser then water
None of these
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Question # 5
According to Stoke's law, drag force depends on
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Initial velocity
Final velocity
Terminal velocity
Instantaneous velocity
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Question # 6
If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm
2
will be
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1 cm
2 cm
8 cm
None
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Question # 7
A body is moving through a viscous medium eventually comes to rest because of:
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Force of gravity
Force of friction
Its weight
Both A and C
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Question # 8
The fluid which is incompressible and non viscous is called
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Ideal fluid
Non-ideal fluid
Prefect fluid
All
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Question # 9
At high speed, fluid friction _____ and fuel consumption ___,:
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Increases, decreases
Increases, increases
Decreases, increases
None of these
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Question # 10
The equation of continuity is
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A
1
A
2 = V
1
V
2
A
1/
V
1 =
A
2/
V
2
V
1/
A
1=
V
2/
A
2
A
1
V
1 =
A
2
V
2
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Question # 11
Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid
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speed
height
none of them
both of them
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Question # 12
What are the SI base units of the coefficient of viscosity
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Kg m s
-2
kgm
2
s
-2
Kg m s
-1
kg m
-1
s
-1
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Question # 13
According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
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low
zero
high
all of them
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Question # 14
The value of viscosity of a fluid is dependent on (at constant temperature)
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the fluid itself
the fluid and its container
anything in contact with the fluid
all of the above
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Question # 15
Blood pressure is measured by the instrument
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stethoscope
sphygmomanometer
barometer
none of them
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Question # 16
One torr is equal to
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13.33 N/m
2
760 N/m
2
760 mm Hg
133.3 N/m
2
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