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

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

With increase of temperature, the viscosity of liquid and gases

Question # 6

The direction of the streamlines is the same as the direction of the

Question # 7

During the steady flow, different streamlines

Question # 8

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

Question # 9

Rate of flow can be expressed in

Question # 10

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

Question # 11

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

Question # 12

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 13

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

Question # 14

N s m-2is unit of:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
2 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow
3 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
4 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
5 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
6 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
7 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
8 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
9 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
10 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

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