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

The pressure will be low where the speed of the fluid is

Question # 2

At the starting point of the free fall motion of an object, its acceleration will be

Question # 3

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 4

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

Question # 5

Surface tension of water is reduced by adding

Question # 6

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 # 7

Fluids resist force, This property is called

Question # 8

The dimensions of viscosity are:

Question # 9

When the speed of a body in a fluid increases then the drag force

Question # 10

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

Question # 11

The equation of continuity is

Question # 12

Bernoulli's equation is based upon law of conservation

Question # 13

When the different streamlines cannot cross each other, then this condition is known as

Question # 14

The application of Bernoulli's equation is

Question # 15

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
3 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
4 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
5 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
6 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
7 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them
8 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
9 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
10 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

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