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

Blood is an

Question # 2

Stock's law holds for:

Question # 3

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 # 4

The equation of continuity
A1V1= A2V2is for the flow of

Question # 5

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 6

The dimensions of viscosity are:

Question # 7

Fluids resist force, This property is called

Question # 8

Blood pressure is measured by the instrument

Question # 9

Bernoulli's equation is based upon law of conversation

Question # 10

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

Question # 11

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 12

The term Brownian movement refers to

Question # 13

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

Question # 14

When the different streamlines cannot cross each other, then this condition is known as

Question # 15

The body will move with terminal velocity when it acquires

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ECAT Physics Chapter 6 Important MCQ's

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 blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them
3 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
4 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
5 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
6 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?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
7 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
8 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both 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 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer

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