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 weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 2

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 3

The dimensions of viscosity are:

Question # 4

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

Question # 5

Fog droplets are suspended in air when their weight is balanced by:

Question # 6

The internal pressure of the blood is

Question # 7

The mass of fluid passing through any cross-section per unit time is called

Question # 8

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 9

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

Question # 10

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

Question # 11

Density of fluid is defined as:

Question # 12

With increase of temperature, the viscosity of liquid and gases

Question # 13

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 14

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
2 Glycerin has viscosity _____ the viscosity of water:
A. More than
B. Equal to
C. Less than
D. None of these
3 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
4 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
5 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
6 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
7 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
8 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
9 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
10 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow

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