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

According to the Bernoulli's theorem the pressure velocity are

Question # 2

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

Question # 3

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 # 4

The pressure will be low where the speed of the fluid is

Question # 5

Blood pressure is measured by the instrument

Question # 6

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

Question # 7

The blood pressure of a person

Question # 8

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Question # 9

The SI unit of viscosity is

Question # 10

Fluids resist force, This property is called

Question # 11

The law of conservation of energy gives us

Question # 12

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

Question # 13

Substances that do not flow easily have

Question # 14

Liquids and gasses have

Question # 15

When the different streamlines cannot cross each other, then this condition is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
2 When the velocity of a liquid flowing steadily in a tube increases, its pressure?
A. Decreases
B. Increases
C. Remains same
D. Zero
3 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
4 A body is moving through a viscous medium eventually comes to rest because of:
A. Force of gravity
B. Force of friction
C. Its weight
D. Both A and C
5 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above
6 In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.
A. Streamline, cannot
B. Turbulent, cannot
C. Streamline, can
D. None of these
7 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
8 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
9 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
10 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases

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