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 device used to measure the speed of liquid flow is known as

Question # 2

With increase of temperature, the viscosity of liquid and gases

Question # 3

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet 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 high speed, fluid friction _____ and fuel consumption ___,:

Question # 6

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

Question # 7

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

Question # 8

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 9

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

Question # 10

What are the SI base units of the coefficient of viscosity

Question # 11

The application of Bernoulli's equation is

Question # 12

During the steady flow, different streamlines

Question # 13

The equation of continuity is

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2
2 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
3 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
4 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
5 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
6 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
7 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
8 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
9 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
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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