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

Stock's law holds for:

Question # 2

The study of fluid in motion basically involves law of conservation of:

Question # 3

A device used to measure the speed of liquid flow is known as

Question # 4

The property of fluids due to which they resist their own flow is called:

Question # 5

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 # 6

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

Question # 7

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 8

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 9

With increase of temperature, the viscosity of liquid and gases

Question # 10

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 # 11

Surface tension of water is due to

Question # 12

Surface tension of water is reduced by adding

Question # 13

High speed meteors rushing through air reduces to ashes because of:

Question # 14

In a normal healthy person the value of systolic pressure is

Question # 15

Which of the following has the greatest coefficient of viscosity?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
2 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
3 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
4 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
5 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
6 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
7 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
8 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
9 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
10 The equation of continuity is
A. A1A2 = V1V2
B. A1/V1 =A2/V2
C. V1/A1=V2/A2
D. A1V1 =A2V2

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