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 SI unit of viscosity is

Question # 2

Pressure exerted by a gas on the walls of its container in due to

Question # 3

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 # 4

Drag force increases if speed of the object moving through the fluid:

Question # 5

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

Question # 6

Bernoulli's equation is applicable for

Question # 7

During the steady flow, different streamlines

Question # 8

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 9

Machine parts are jammed due to:

Question # 10

The law of conservation of mass gives us the

Question # 11

The un-steady streamline flow is called

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

With the increase of temperature viscosity

Question # 14

When a water droplet falls through air, the net force on it is

Question # 15

A body is moving through a viscous medium eventually comes to rest because of:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the speed of a body in a fluid increases then the drag force
A. decreases
B. becomes zero
C. increases
D. non of them
2 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
3 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
4 Blood vessels can be stretch like rubber, therefore they are
A. rigid
B. hard
C. very thick
D. not rigid
5 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
6 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
7 The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:
A. More, lesser
B. Lesser, more
C. Both A and B
D. Lesser, lesser
8 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
9 When a fluid is in motion, its flow can be considered as
A. turbulent
B. streamline
C. either or them
D. neither of them
10 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them

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