ECAT Pre General Science Physics Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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

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ECAT Pre General Science Physics Chapter 6 Fluid Dynamics

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Question # 1

A device used to measure the speed of liquid flow is known as

Question # 2

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

Question # 3

Fluid friction is _____ the friction between two solid surfaces:

Question # 4

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 5

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

Question # 6

A body is moving through a viscous medium eventually comes to rest because of:

Question # 7

In Bernoulli's theorem the relation between velocity and pressure is

Question # 8

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 9

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

Question # 10

Fluids resist force, This property is called

Question # 11

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

Question # 12

Substances that do not flow easily have

Question # 13

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 14

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

Question # 15

The analysis of fluid motion becomes simplified by using

Question # 16

When the different streamlines cannot cross each other, then this condition is known as

Question # 17

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

Question # 18

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

Question # 19

The direction of the streamlines is the same as the direction of the

Question # 20

Ball pen functions on the principle of

Question # 21

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 22

In a normal healthy person the value of diastolic pressure is

Question # 23

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 # 24

The equation of continuity
A1V1= A2V2is for the flow of

Question # 25

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

Question # 26

The equation of continuity is

Question # 27

The body passing a viscous medium affected by:

Question # 28

Blood is an

Question # 29

A body is floating in a liquid. The up thrust on the body is

Question # 30

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
3 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
4 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
5 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
6 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
7 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
8 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
9 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
10 Matter is made up of very tiny particles called
A. Atoms
B. Molecules
C. Ions
D. None of these

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