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 un-steady streamline flow is called

Question # 2

Machine parts are jammed due to:

Question # 3

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 4

During the steady flow, different streamlines

Question # 5

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 # 6

Ball pen functions on the principle of

Question # 7

The velocity of falling raindrop attains limited value because of

Question # 8

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

Question # 9

According to slok's law, drag force depends on

Question # 10

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Question # 11

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 12

What are the SI base units of the coefficient of viscosity

Question # 13

The smooth or steady streamline flow is known as

Question # 14

Above a certain velocity of a fluid is called

Question # 15

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
2 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
3 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
4 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
5 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
6 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
7 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
8 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
9 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
10 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved

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