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

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 2

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 3

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 4

Unit of viscosity is:

Question # 5

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 6

What is another name for laminar flow?

Question # 7

Internal friction of fluid is called

Question # 8

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

Question # 9

High speed meteors rushing through air reduces to ashes because of:

Question # 10

With increase of temperature, the viscosity of liquid and gases

Question # 11

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

Question # 12

Density of fluid is defined as:

Question # 13

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 14

Glycerin has viscosity _____ the viscosity of water:

Question # 15

Fluid friction is _____ the friction between two solid surfaces:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these
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 irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
4 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
5 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
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
6 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
7 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
8 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
9 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
10 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above

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