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

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

Question # 2

The velocity of falling raindrops attains limited value because of

Question # 3

When the different streamlines cannot cross each other, then this condition is known as

Question # 4

The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the

Question # 5

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

Question # 6

Which of the following has the greatest coefficient of viscosity?

Question # 7

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

Question # 8

Fluids resist force, This property is called

Question # 9

A body is moving through a viscous medium eventually comes to rest because of:

Question # 10

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

Question # 11

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

Question # 12

Internal friction of fluid is called

Question # 13

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

Question # 14

In case of streamed lined flow of liquid, the loss of energy is

Question # 15

N s m-2is unit of:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
2 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
3 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
4 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
5 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
6 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
7 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
8 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
9 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
10 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water

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