ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

According to Stoke's law, drag force depends on

Question # 2

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 # 3

The dimensions of viscosity are:

Question # 4

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

Question # 5

A body is moving through a viscous medium eventually comes to rest because of:

Question # 6

A body is floating in a liquid. The up thrust on the body is

Question # 7

The flow of an ideal fluid is

Question # 8

A high concentration of red blood cells increases its viscosity from

Question # 9

In a normal healthy person the value of diastolic pressure is

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

A massive object falls through a fluid:

Question # 14

The law of conservation of energy gives us

Question # 15

Pressure exerted by a gas on the walls of its container in due to

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
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 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
4 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
5 A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is
A. 125 J
B. 90 J
C. 160 J
D. 85 J
6 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
7 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
8 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
9 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
10 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas

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