ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

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

Question # 2

At low speeds, the drag force is

Question # 3

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 # 4

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

Question # 5

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 6

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

Question # 7

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

Question # 8

Density of fluid is defined as:

Question # 9

What is another name for laminar flow?

Question # 10

Substances that do not flow easily have

Question # 11

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

Question # 12

Fluids resist force, This property is called

Question # 13

The internal pressure of the blood is

Question # 14

The velocity of falling raindrop attains limited value because of

Question # 15

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

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Sr.# Question Answer
1 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
2 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
3 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
4 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
5 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
6 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
7 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
8 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
9 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
10 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

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