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 dimensions of viscosity are:

Question # 2

An object moving through a fluid experiences a retarding force called a

Question # 3

According to slok's law, drag force depends on

Question # 4

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

Question # 5

With the increase of temperature viscosity

Question # 6

The analysis of fluid motion becomes simplified by using

Question # 7

In a normal healthy person the value of systolic pressure is

Question # 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

Question # 9

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 10

One torr is equal to

Question # 11

Viscosity is defined as

Question # 12

Surface tension of water is reduced by adding

Question # 13

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 14

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
2 When the different streamlines cannot cross each other, then this condition is known as
A. continuity condition
B. turbulent flow condition
C. steady flow condition
D. none of them
3 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
4 Fire fighters have jet attached to the head of their water pipes in order to
A. Increase the mass of water flowing per second
B. Increase the velocity of water flowing out
C. Increase the volume of water flowing per second
D. Avoid wastage of water
5 0.10 cm can be written as:
A. 1.0 x 10-2m
B. 1.0 x 10-3cm
C. 1.0 x 10-4cm
D. 1. x 10-4m
6 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
7 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
8 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
9 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
10 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1

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