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

The equation of continuity is

Question # 2

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

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

Stock's law holds for:

Question # 5

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

Question # 6

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 # 7

The application of Bernoulli's equation is

Question # 8

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

Question # 9

Fluid friction is _____ the friction between two solid surfaces:

Question # 10

At low speeds, the drag force is

Question # 11

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 12

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

Question # 13

The fluid is incompressible, if itsdensity is

Question # 14

Matter is made up of very tiny particles called

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
2 The internal pressure of the blood is
A. less than the external atmospheric pressure
B. greater than the external atmospheric pressure
C. equal to the external atmosphericpressure
D. none of them
3 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
4 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
5 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
6 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
7 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
8 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
9 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
10 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation

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