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

According to Stoke's law, drag force depends on

Question # 2

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 # 3

The velocity of falling raindrop attains limited value because of

Question # 4

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 5

When each particle of the fluid moves along a smoth path, this path is known as

Question # 6

The analysis of fluid motion becomes simplified by using

Question # 7

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

Question # 8

Blood vessels can be stretch like rubber, therefore they are

Question # 9

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 # 10

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

Question # 11

Fluids resist force, This property is called

Question # 12

Glycerin has viscosity _____ the viscosity of water:

Question # 13

Surface tension of water is due to

Question # 14

The SI unit of viscosity is

Question # 15

N s m-2is unit of:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
2 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
3 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
4 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
5 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
6 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
7 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
8 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
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 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None

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