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

The velocity of falling raindrops attains limited value because of

Question # 2

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

Question # 3

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 4

An object moving through a fluid experiences a retarding force called a

Question # 5

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 6

The value for systolic blood pressure for a normal healthy person is

Question # 7

The body will move with terminal velocity when it acquires

Question # 8

According to slok's law, drag force depends on

Question # 9

The electrical forces between the molecules of a liquid are

Question # 10

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 11

Above a certain velocity of a fluid is called

Question # 12

The law of conservation of mass gives us the

Question # 13

Surface tension of water is due to

Question # 14

Where the streamlines are very far apart from each other, the pressure will be

Question # 15

The velocity of falling raindrop attains limited value because of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
2 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
3 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
4 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
5 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
D. none of them
6 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
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
7 If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be
A. turbulent
B. streamline
C. abrupt
D. none of them
8 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
9 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
10 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C

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