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

When a fluid is in motion, its flow can be considered as

Question # 2

Substances that flow easily have

Question # 3

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

Question # 4

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

Question # 5

The smooth or steady streamline flow is known as

Question # 6

Blood has a density

Question # 7

Density of fluid is defined as:

Question # 8

The fluid which is incompressible and non viscous is called

Question # 9

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 10

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

Question # 11

Viscosity is defined as

Question # 12

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

Question # 13

Fluid friction is _____ the friction between two solid surfaces:

Question # 14

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

Question # 15

Where the streamlines are very far apart from each other, the pressure will be

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
2 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
3 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
4 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
5 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
6 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
7 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
8 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
9 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
10 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them

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