ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

Try The MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

A high concentration of red blood cells increases its viscosity from

Question # 2

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

Question # 3

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 # 4

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

Question # 5

What is another name for laminar flow?

Question # 6

One torr is equal to

Question # 7

The resistance offered by a fluid to a solid moving inside it is called:

Question # 8

Blood has a density

Question # 9

In a normal healthy person the value of diastolic pressure is

Question # 10

The un-steady streamline flow is called

Question # 11

Fluids resist force, This property is called

Question # 12

The dimensions of viscosity are:

Question # 13

What are the SI base units of the coefficient of viscosity

Question # 14

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

Question # 15

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 If one of the pipes has a much smaller diameter than the other and are placed horizontally then form both sides of Bernoulli's equation, we can drop the term
A. P
B. 1/2 fv2
C. pgh
D. none of them
2 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
3 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
4 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
5 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
6 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
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
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 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
9 A person standing near the track of a fast moving train has tendency to fall towards it because of
A. Vibration due to motion of train
B. Gravitation force of attraction between person and trains
C. The high speed of train
D. Some other effect
10 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them

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