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

The electrical forces between the molecules of a liquid are

Question # 2

What is another name for laminar flow?

Question # 3

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 4

Which of the following has the greatest coefficient of viscosity?

Question # 5

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

Question # 6

The internal pressure of the blood is

Question # 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

Question # 8

A body is floating in a liquid. The up thrust on the body is

Question # 9

Ball pen functions on the principle of

Question # 10

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

Question # 11

The density of blood is nearly equal to that of

Question # 12

Bernoulli's equation is based upon law of conservation

Question # 13

When each particle of the fluid moves along a smoth path, this path is known as

Question # 14

The SI unit of viscosity is

Question # 15

The body passing a viscous medium affected by:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
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 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
5 Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid
A. speed
B. height
C. none of them
D. both of them
6 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
7 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
8 A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
9 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
10 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them

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