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

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 2

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 3

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

Question # 4

The value for systolic blood pressure for a normal healthy person is

Question # 5

Internal friction of fluid is called

Question # 6

The equation of continuity is

Question # 7

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

Question # 8

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 9

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 10

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

Question # 11

The analysis of fluid motion becomes simplified by using

Question # 12

Fluids resist force, This property is called

Question # 13

0.10 cm can be written as:

Question # 14

A body is floating in a liquid. The up thrust on the body is

Question # 15

The fluid which is incompressible and non viscous is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
2 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
3 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
4 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
5 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
6 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
7 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
8 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
9 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
10 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them

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