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

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

Question # 2

The blood pressure of a person

Question # 3

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 4

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

Question # 5

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 6

Fluid friction is _____ the friction between two solid surfaces:

Question # 7

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 8

The law of conservation of mass gives us the

Question # 9

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 10

Blood has a density

Question # 11

Matter is made up of very tiny particles called

Question # 12

One torr is equal to

Question # 13

The un-steady streamline flow is called

Question # 14

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

Question # 15

Internal friction of fluid is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
2 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
3 The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
4 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
5 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
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 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
8 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
9 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
10 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid

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