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

According to slok's law, drag force depends on

Question # 2

A body is moving through a viscous medium eventually comes to rest because of:

Question # 3

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

Question # 4

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

Question # 5

At the starting point of the free fall motion of an object, its acceleration will be

Question # 6

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 7

The body will move with terminal velocity when it acquires

Question # 8

High speed meteors rushing through air reduces to ashes because of:

Question # 9

The irregular and unsteady flow of the fluid is called

Question # 10

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

Question # 11

The law of conservation of mass gives us the

Question # 12

Bernoulli's equation is applicable for

Question # 13

At high altitude the blood oozes out of the nose and ear because

Question # 14

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 15

Rate of flow can be expressed in

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
2 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
3 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
4 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
5 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
6 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
7 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
8 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
9 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
10 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these

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