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

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

Question # 2

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 # 3

A high concentration of red blood cells increases its viscosity from

Question # 4

Internal friction of fluid is called

Question # 5

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 6

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 7

The body will move with terminal velocity when it acquires

Question # 8

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

Question # 9

The value for systolic blood pressure for a normal healthy person is

Question # 10

Fluids resist force, This property is called

Question # 11

When a water droplet falls through air, the net force on it is

Question # 12

Bernoulli's equation is applicable for

Question # 13

High speed meteors rushing through air reduces to ashes because of:

Question # 14

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

Question # 15

Fluid friction is _____ the friction between two solid surfaces:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
2 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
3 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
4 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
5 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
6 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
7 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
8 During the steady flow, different streamlines
A. cannot across each other
B. can across each other
C. either of them
D. neither of them
9 According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be
A. low
B. zero
C. high
D. all of them
10 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force

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