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

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

Question # 2

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

Question # 3

The electrical forces between the molecules of a liquid are

Question # 4

Stock's law holds for:

Question # 5

The fluid which is incompressible and non viscous is called

Question # 6

Blood has a density

Question # 7

Surface tension of water is reduced by adding

Question # 8

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

Question # 9

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 10

Bernoulli's equation is based upon law of conservation

Question # 11

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be

Question # 12

The un-steady streamline flow is called

Question # 13

The term Brownian movement refers to

Question # 14

With increase of temperature, the viscosity of liquid and gases

Question # 15

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
2 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
3 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
4 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
5 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
6 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
7 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
8 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
9 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
10 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above

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