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

Substances that do not flow easily have

Question # 2

In case of streamed lined flow of liquid, the loss of energy is

Question # 3

A device used to measure the speed of liquid flow is known as

Question # 4

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 5

If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term

Question # 6

Bernoulli's equation is applicable for

Question # 7

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 8

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

Question # 9

Rate of flow can be expressed in

Question # 10

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 11

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 # 12

The law of conservation of mass gives us the

Question # 13

The body will move with terminal velocity when it acquires

Question # 14

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
2 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
3 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
4 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
5 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
6 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
7 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
8 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
9 Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Avoid wastage of water
C. Increase the velocity of water flowing out
D. Increase the volume of water flowing per second
10 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
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above

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