ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 2

Drag force increases if speed of the object moving through the fluid:

Question # 3

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 4

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 # 5

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

Question # 6

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 7

A flowing liquid possess

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 12

Viscosity is defined as

Question # 13

At low speeds, the drag force is

Question # 14

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 # 15

With increase of temperature, the viscosity of liquid and gases

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
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 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
4 Which of the following options correctly states the equation of continuity for an ideal fluid?
A. A1A2= V1V2
B. A1/A2= V2/V1
C. A1/A2= V1/V2
D. none of the above
5 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these
6 With the increase of temperature viscosity
A. Increase
B. Decrease
C. Remains same
D. Doubles
7 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
8 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
9 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
10 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

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