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

The SI unit of viscosity is

Question # 2

The velocity of falling raindrops attains limited value because of

Question # 3

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 4

Fluids resist force, This property is called

Question # 5

In Bernoulli's theorem the relation between velocity and pressure is

Question # 6

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

Question # 7

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 8

The irregular and unsteady flow of the fluid is called

Question # 9

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

Question # 10

The direction of the streamlines is the same as the direction of the

Question # 11

Fog droplets are suspended in air when their weight is balanced by:

Question # 12

The density of blood is nearly equal to that of

Question # 13

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 14

The un-steady streamline flow is called

Question # 15

Substances that flow easily have

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
3 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
4 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
5 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
6 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
A. water contains hydrogen atoms, air does not
B. water molecules are smaller than molecules in the air
C. water molecules are smaller than molecules in the air
D. surface tension of the water prevents it from
7 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
8 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
9 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
A. 20
B. 200
C. 2000
D. 20,000
10 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere

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