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

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be

Question # 3

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 4

An object moving through a fluid experiences a retarding force called a

Question # 5

The equation of continuity
A1V1= A2V2is for the flow of

Question # 6

The velocity of falling raindrops attains limited value because of

Question # 7

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

Question # 8

Bernoulli's equation is based upon law of conservation

Question # 9

What is another name for laminar flow?

Question # 10

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 11

The analysis of fluid motion becomes simplified by using

Question # 12

A high concentration of red blood cells increases its viscosity from

Question # 13

The irregular and unsteady flow of the fluid is called

Question # 14

With the increase of temperature viscosity

Question # 15

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?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
2 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
3 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
4 The study of fluid in motion basically involves law of conservation of:
A. Mass
B. Energy
C. Change
D. Both A and C
5 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
6 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2
7 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
8 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
9 The application of Bernoulli's equation is
A. Torricelli's theorem
B. Venture relation
C. Binomial theorem
D. Both a and b
10 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity

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