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

When the speed of a body in a fluid increases then the drag force

Question # 2

Which of the following has the greatest coefficient of viscosity?

Question # 3

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?

Question # 4

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

Question # 5

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

Question # 6

The electrical forces between the molecules of a liquid are

Question # 7

The flow of an ideal fluid is

Question # 8

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 9

Matter is made up of very tiny particles called

Question # 10

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

Question # 11

Blood is an

Question # 12

With increase of temperature, the viscosity of liquid and gases

Question # 13

Fluid friction is _____ the friction between two solid surfaces:

Question # 14

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 15

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
3 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
4 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
5 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
6 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
7 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
8 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
9 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
10 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above

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