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

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 2

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

Question # 3

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

Question # 4

According to Stoke's law, drag force depends on

Question # 5

Where the streamlines are very close to each other, the pressure will be

Question # 6

The equation of continuity is

Question # 7

At high altitude the blood oozes out of the nose and ear because

Question # 8

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

Question # 9

The velocity of falling raindrop attains limited value because of

Question # 10

According to the Bernoulli's theorem the pressure velocity are

Question # 11

The law of conservation of mass gives us the

Question # 12

The electrical forces between the molecules of a liquid are

Question # 13

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

Question # 14

Glycerin has viscosity _____ the viscosity of water:

Question # 15

Blood pressure is measured by the instrument

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
2 A device used to measure the speed of liquid flow is known as
A. barometer
B. speedometer
C. sphygmomanometer
D. venture-meter
3 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
4 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
5 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
6 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
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
7 The velocity gained by the fluid in falling through the distance (h1 - h2) under the action of gravity is equal to the speed of the action of gravity is equal to the speed of the
A. orifices
B. efflux
C. fluid
D. none of them
8 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
9 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
10 The property of fluids due to which they resist their own flow is called:
A. Drag force
B. Surface tension
C. Viscosity
D. None of these

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