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

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

Question # 2

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

Question # 3

The law of conservation of mass gives us the

Question # 4

Above a certain velocity of a fluid is called

Question # 5

The application of Bernoulli's equation is

Question # 6

The unit of viscosity is SI system is:

Question # 7

Internal friction of fluid is called

Question # 8

A massive object falls through a fluid:

Question # 9

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 10

According to Stoke's law, drag force depends on

Question # 11

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

Question # 12

When the speed of a body in a fluid increases then the drag force

Question # 13

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

Question # 14

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

Question # 15

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
2 Where the streamlines are very close to each other, the pressure will be
A. low
B. zero
C. high
D. all of them
3 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
4 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
5 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
6 Substances that do not flow easily have
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
7 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
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 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
10 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

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