ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 2

The flow of an ideal fluid is

Question # 3

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 4

Fire fighters have jet attached to the head of their water pipes in order to

Question # 5

The body will move with terminal velocity when it acquires

Question # 6

In Bernoulli's theorem the relation between velocity and pressure is

Question # 7

Rate of flow can be expressed in

Question # 8

When a water droplet falls through air, the net force on it is

Question # 9

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 10

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 11

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 12

Surface tension of water is reduced by adding

Question # 13

Pressure exerted by a gas on the walls of its container in due to

Question # 14

The blood pressure of a person

Question # 15

Above a certain velocity of a fluid is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube
2 The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
3 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
4 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
5 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
6 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
7 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
8 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
9 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
10 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above

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