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

Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:

Question # 2

Surface tension of water is due to

Question # 3

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 4

Drag force increases if speed of the object moving through the fluid:

Question # 5

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

Question # 6

In a normal healthy person the value of diastolic pressure is

Question # 7

One torr is equal to

Question # 8

The internal pressure of the blood is

Question # 9

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 10

When a fluid is in motion, its flow can be considered as

Question # 11

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

Question # 12

The unit of viscosity is SI system is:

Question # 13

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

Question # 14

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 # 15

The fluid is incompressible, if itsdensity is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
2 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
3 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
4 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
5 In a normal healthy person the value of diastolic pressure is
A. 75 - 80 torr
B. 100 torr
C. 120 torr
D. none of them
6 At the starting point of the free fall motion of an object, its acceleration will be
A. maximum
B. minimum
C. zero
D. none of them
7 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
8 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
9 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
10 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes

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