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Online Tests
ECAT Physics Chapter 6 Fluid Dynamics Online Test MCQs With Answers
Question # 1
The equation of continuity
A
1
V
1
= A
2
V
2
is for the flow of
Choose an answer
an ideal fluid
an incompressible fluid
a non visconcous fluid
all of the above
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Question # 2
The force exerted by the fluid in a hydraulic pump on the piston is 10 cm
2
, the fluid pressure on the piston is, in N/cm
2
Choose an answer
20
200
2000
20,000
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Question # 3
In a normal healthy person the value of systolic pressure is
Choose an answer
75 torr
80 torr
120 torr
all of them
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Question # 4
Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid
Choose an answer
speed
height
none of them
both of them
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Question # 5
Surface tension of water is due to
Choose an answer
Inter molecular attractions
Inter molecular spaces
Inter molecular repulsion
None of above
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Question # 6
The SI unit of viscosity is
Choose an answer
kg m
-1
s
-1
kg ms
-1
kg m
-1
s
-2
kg m
-1
s
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Question # 7
The terminal velocity of water droplet of radius 1 x 10
-4
m and desity 1000 kg m
-3
descending through air of viscosity 19 x 10
-6
kg. m
-1
s
-1
is
Choose an answer
2.5 ms
-1
3.2 ms
-1
4.3 ms
-1
1.1 ms
-1
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Question # 8
Drag force increases if speed of the object moving through the fluid:
Choose an answer
Increases
Decreases
Remains constant
None of these
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Question # 9
In a normal healthy person the value of diastolic pressure is
Choose an answer
75 - 80 torr
100 torr
120 torr
none of them
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Question # 10
Glycerin has viscosity _____ the viscosity of water:
Choose an answer
More than
Equal to
Less than
None of these
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Question # 11
Rate of flow can be expressed in
Choose an answer
litre/sec
litre-sec
sec/litre
sec/litre-m
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Question # 12
According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
Choose an answer
low
zero
high
all of them
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Question # 13
When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
Choose an answer
F
D
-mg
Zero
mg-F
D
None of these
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Question # 14
The flow of an ideal fluid is
Choose an answer
streamline flow
incompressible flow
non-viscous
all of the above
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Question # 15
At high speed, fluid friction _____ and fuel consumption ___,:
Choose an answer
Increases, decreases
Increases, increases
Decreases, increases
None of these
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Question # 16
The application of Bernoulli's equation is
Choose an answer
Torricelli's theorem
Venture relation
Binomial theorem
Both a and b
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