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

Unit of viscosity is:

Question # 2

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 # 3

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

Question # 4

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 5

The analysis of fluid motion becomes simplified by using

Question # 6

Fluids resist force, This property is called

Question # 7

Bernoulli's equation is important in the field of

Question # 8

The study of fluid in motion basically involves law of conservation of:

Question # 9

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

Question # 10

In a normal healthy person the value of diastolic pressure is

Question # 11

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 # 12

The density of blood is nearly equal to that of

Question # 13

The smooth or steady streamline flow is known as

Question # 14

The property of fluids due to which they resist their own flow is called:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
2 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
3 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
4 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
5 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
6 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
7 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
8 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
9 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
10 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

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