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

At the starting point of the free fall motion of an object, its acceleration will be

Question # 2

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 3

Fluids resist force, This property is called

Question # 4

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 5

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

Question # 6

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

Question # 7

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 8

Fire fighters have jet attached to the head of their water pipes in order to

Question # 9

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 10

0.10 cm can be written as:

Question # 11

Substances that flow easily have

Question # 12

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

Question # 13

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

Question # 14

Pressure exerted by a gas on the walls of its container in due to

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
2 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
3 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
4 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow
5 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
6 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
7 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
8 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
9 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
10 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero

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