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

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

Question # 2

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 3

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

Question # 4

Density of fluid is defined as:

Question # 5

During the steady flow, different streamlines

Question # 6

Bernoulli's equation is based upon law of conservation

Question # 7

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 8

The irregular and unsteady flow of the fluid is called

Question # 9

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

Question # 10

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 11

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

Question # 12

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 13

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 14

The electrical forces between the molecules of a liquid are

Question # 15

The mass of fluid passing through any cross-section per unit time is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
2 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
3 Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
4 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
5 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
6 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
7 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
8 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
9 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
10 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these

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