ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

Surface tension of water is due to

Question # 2

The smooth or steady stream-line flow is know as

Question # 3

The equation of continuity is

Question # 4

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 # 5

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

Question # 6

The term Brownian movement refers to

Question # 7

Liquids and gasses have

Question # 8

Which of the following is a characteristic of an ideal fluid?

Question # 9

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Question # 10

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 11

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

Question # 12

The mass of fluid passing through any cross-section per unit time is called

Question # 13

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 14

The blood pressure of a person

Question # 15

In a normal healthy person the value of diastolic pressure is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
2 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
3 Surface tension of water is due to
A. Inter molecular attractions
B. Inter molecular spaces
C. Inter molecular repulsion
D. None of above
4 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
5 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
6 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
7 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
8 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
9 According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
A. decreases
B. increases
C. becomes zero
D. none of them
10 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these

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