ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 2

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 3

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 4

Rate of flow can be expressed in

Question # 5

The irregular and unsteady flow of the fluid is called

Question # 6

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

Question # 7

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

Question # 8

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 9

One torr is equal to

Question # 10

Fluid friction is _____ the friction between two solid surfaces:

Question # 11

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 12

The fluid is incompressible, if itsdensity is

Question # 13

N s m-2is unit of:

Question # 14

The electrical forces between the molecules of a liquid are

Question # 15

Unit of viscosity is:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
2 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
3 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
4 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
5 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
6 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
7 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
8 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
9 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
10 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these

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