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

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 2

Fog droplets are suspended in air when their weight is balanced by:

Question # 3

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

Question # 4

According to the Bernoulli's theorem the pressure velocity are

Question # 5

The body passing a viscous medium affected by:

Question # 6

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

Question # 7

When the speed of a body in a fluid increases then the drag force

Question # 8

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 9

Internal friction of fluid is called

Question # 10

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 11

A high concentration of red blood cells increases its viscosity from

Question # 12

The flow of an ideal fluid is

Question # 13

The study of fluid in motion basically involves law of conservation of:

Question # 14

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 15

The smooth or steady stream-line flow is know as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
2 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
3 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
4 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
5 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
6 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
7 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
8 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
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
9 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
10 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

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