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

Blood vessels can be stretch like rubber, therefore they are

Question # 2

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

Question # 3

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2

Question # 4

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

Question # 5

The fluid is incompressible, if itsdensity is

Question # 6

The smooth or steady streamline flow is known as

Question # 7

The blood pressure of a person

Question # 8

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

Question # 9

The study of fluid in motion basically involves law of conservation of:

Question # 10

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

Question # 11

During the steady flow, different streamlines

Question # 12

The analysis of fluid motion becomes simplified by using

Question # 13

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

Question # 14

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

Question # 15

Where the streamlines are very far apart from each other, the pressure will be

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Pressure exerted by a gas on the walls of its container in due to
A. adhesion between the gas molecules and the container
B. cohesion between the gas molecules and the container
C. collision between the gas molecules and the container
D. surface tension of the gas
2 The equation of continuity
A1V1= A2V2is for the flow of
A. an ideal fluid
B. an incompressible fluid
C. a non visconcous fluid
D. all of the above
3 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
4 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
5 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
6 Unit of viscosity is:
A. Kg m-1sec-1
B. N s m-2
C. J s m-3
D. All of these
7 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
8 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
9 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow
10 When a water droplet falling freely through air, the drag force on water droplet increases with th
A. decrease in speed
B. increase in speed
C. pressure
D. none of them

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