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

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

Question # 2

Fluid friction is _____ the friction between two solid surfaces:

Question # 3

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 # 4

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 5

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

Question # 6

Internal friction of fluid is called

Question # 7

A high concentration of red blood cells increases its viscosity from

Question # 8

0.10 cm can be written as:

Question # 9

The SI unit of viscosity is

Question # 10

Fluids resist force, This property is called

Question # 11

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

Question # 12

The irregular and unsteady flow of the fluid is called

Question # 13

Where the streamlines are very close to each other, the pressure will be

Question # 14

The un-steady streamline flow is called

Question # 15

In deriving the Bernoulli's equation, we assume that the fluid is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
2 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
3 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
4 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
5 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
6 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
7 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
8 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
9 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
10 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

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