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

The fluid which is incompressible and non viscous is called

Question # 2

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

Question # 3

The resistance offered by a fluid to a solid moving inside it is called:

Question # 4

A massive object falls through a fluid:

Question # 5

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

Question # 6

0.10 cm can be written as:

Question # 7

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 8

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 9

The rain drop falling from the sky reach the ground with

Question # 10

A flowing liquid possess

Question # 11

The velocity of falling raindrops attains limited value because of

Question # 12

Which of the following has the greatest coefficient of viscosity?

Question # 13

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

Question # 14

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

Question # 15

The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
3 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
4 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
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 the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
7 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
8 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
9 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
10 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them

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