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

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

Question # 2

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

Question # 3

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

Question # 4

The fluid which is incompressible and non viscous is called

Question # 5

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

Question # 6

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 7

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

Question # 8

The velocity of falling raindrops attains limited value because of

Question # 9

What are the SI base units of the coefficient of viscosity

Question # 10

Blood has a density

Question # 11

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

Question # 12

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 # 13

In a normal healthy person the value of diastolic pressure is

Question # 14

A massive object falls through a fluid:

Question # 15

The analysis of fluid motion becomes simplified by using

Question # 16

The law of conservation of energy gives us

Question # 17

Unit of viscosity is:

Question # 18

The velocity of falling raindrop attains limited value because of

Question # 19

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 20

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 # 21

At the starting point of the free fall motion of an object, its acceleration will be

Question # 22

The law of conservation of mass gives us the

Question # 23

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

Question # 24

Fluids resist force, This property is called

Question # 25

Blood is an

Question # 26

Viscosity is defined as

Question # 27

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

Question # 28

At low speeds, the drag force is

Question # 29

One torr is equal to

Question # 30

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
2 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
3 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
4 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
5 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
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 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
8 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
9 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
10 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate

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