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

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 2

Bernoulli's equation is based upon law of conservation

Question # 3

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 4

Internal friction of fluid is called

Question # 5

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

Question # 6

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 7

The property of fluids due to which they resist their own flow is called:

Question # 8

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 # 9

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 10

Substances that flow easily have

Question # 11

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

Question # 12

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 13

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

Question # 14

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

Question # 15

The smooth or steady stream-line flow is know as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
2 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
3 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
4 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
5 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
6 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
7 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
A. turbulent
B. streamline
C. abrupt
D. none of them
8 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
9 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
10 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these

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