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

Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?

Question # 2

The velocity of falling raindrop attains limited value because of

Question # 3

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 # 4

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

Question # 5

During the steady flow, different streamlines

Question # 6

The irregular and unsteady flow of the fluid is called

Question # 7

In case of streamed lined flow of liquid, the loss of energy is

Question # 8

Which of the following has the greatest coefficient of viscosity?

Question # 9

0.10 cm can be written as:

Question # 10

A body is floating in a liquid. The up thrust on the body is

Question # 11

The equation of continuity is

Question # 12

The body will move with terminal velocity when it acquires

Question # 13

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

Question # 14

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

Question # 15

In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The value of viscosity of a fluid is dependent on (at constant temperature)
A. the fluid itself
B. the fluid and its container
C. anything in contact with the fluid
D. all of the above
2 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
3 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
4 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
5 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
6 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
7 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
8 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
9 Substances that flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
10 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

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