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

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

Question # 2

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 3

Which of the following has the greatest coefficient of viscosity?

Question # 4

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

Question # 5

Where the streamlines are very close to each other, the pressure will be

Question # 6

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Question # 7

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

Question # 8

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 # 9

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

Question # 10

When there is no internal frictional forces between the adjacent layers of fluid, then the fluid is called

Question # 11

The term Brownian movement refers to

Question # 12

A high concentration of red blood cells increases its viscosity from

Question # 13

The mass of fluid passing through any cross-section per unit time is called

Question # 14

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

Question # 15

Internal friction of fluid is called

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
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:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
2 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
3 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
4 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
5 The density of water is 103kg/m3. The water pressure on a submarine is 2.0 x 107N/m2. The depth of the submarine below the surface of the water, in maters, is approximately
A. 200 m
B. 11000 m
C. 2000 m
D. 8000 m
6 When each particle of the fluid moves along a smoth path, this path is known as
A. straight path
B. smooth path
C. haphazard path
D. steamline
7 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
8 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
9 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
10 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

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