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

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

Question # 2

The fluid is incompressible, if itsdensity is

Question # 3

The un-steady streamline flow is called

Question # 4

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

Question # 5

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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 # 10

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 11

According to Stoke's law, drag force depends on

Question # 12

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 13

With the increase of temperature viscosity

Question # 14

When a fluid is in motion, its flow can be considered as

Question # 15

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

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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 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
3 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
4 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
5 When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called
A. incompressible
B. compressible
C. viscous
D. non viscous
6 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
7 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
8 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
9 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
10 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these

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