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

Internal friction of fluid is called

Question # 2

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

Question # 3

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

Question # 4

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

Question # 5

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 6

N s m-2is unit of:

Question # 7

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 8

With the increase of temperature viscosity

Question # 9

Which of the following is a characteristic of an ideal fluid?

Question # 10

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

Question # 11

What is another name for laminar flow?

Question # 12

The direction of the streamlines is the same as the direction of the

Question # 13

The irregular and unsteady flow of the fluid is called

Question # 14

During the steady flow, different streamlines

Question # 15

The velocity of falling raindrops attains limited value because of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
3 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
4 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
5 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
6 In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of
A. 0.1 m
B. 0.2 m
C. 0.98 m
D. Full length of the capillary tube
7 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
8 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
9 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
10 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them

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