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

Above a certain velocity of a fluid is called

Question # 2

The term Brownian movement refers to

Question # 3

The smooth or steady stream-line flow is know as

Question # 4

The law of conservation of mass gives us the

Question # 5

Machine parts are jammed due to:

Question # 6

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 7

Bernoulli's equation is based upon law of conversation

Question # 8

0.10 cm can be written as:

Question # 9

Density of fluid is defined as:

Question # 10

Surface tension of water is reduced by adding

Question # 11

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 # 12

Fluid friction is _____ the friction between two solid surfaces:

Question # 13

Blood has a density

Question # 14

A massive object falls through a fluid:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these
3 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
4 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
5 The direction of the streamlines is the same as the direction of the
A. force
B. torque
C. velocity
D. weight
6 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
7 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
8 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
9 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball

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