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

Unit of viscosity is:

Question # 2

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

Question # 3

According to Stoke's law, drag force depends on

Question # 4

With increase of temperature, the viscosity of liquid and gases

Question # 5

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

Question # 6

The law of conservation of mass gives us the

Question # 7

Surface tension of water is reduced by adding

Question # 8

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 9

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

Question # 10

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

Question # 11

Viscosity is defined as

Question # 12

Fluids resist force, This property is called

Question # 13

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

Question # 14

The velocity of falling raindrops attains limited value because of

Question # 15

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Blood pressure is measured in torr. Which of the following units could belong to torr?
A. N m-1
B. N m-2
C. N m
D. N-1m-2
2 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
3 According to slok's law, drag force depends on
A. Radius of the spherical body
B. Terminal velocity of body
C. Coefficient of viscosity
D. All of above
4 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
5 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
6 The body will move with terminal velocity when it acquires
A. minimum speed
B. zero speed
C. maximum speed
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 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
9 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
10 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these

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