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

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

Question # 2

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Question # 3

The fluid which is incompressible and non viscous is called

Question # 4

What is another name for laminar flow?

Question # 5

The un-steady streamline flow is called

Question # 6

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 7

The blood pressure of a person

Question # 8

During the steady flow, different streamlines

Question # 9

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

Question # 10

A body is moving through a viscous medium eventually comes to rest because of:

Question # 11

Surface tension of water is due to

Question # 12

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 # 13

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 # 14

The flow of an ideal fluid is

Question # 15

When weight of an object falling freely becomes equal to the drag force, then the body will move with

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
3 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
4 Blood pressure is measured by the instrument
A. stethoscope
B. sphygmomanometer
C. barometer
D. none of them
5 The analysis of fluid motion becomes simplified by using
A. law of conservation
B. law of conservation of energy
C. both of them
D. none of them
6 A tube tapers from 20 cm diameter to 2 cm, the velocity at first cross-section is 50 ms-1then velocity at second cross-section is
A. 5000 cms-1
B. 500 cms-1
C. 50 cms-1
D. 0.5 cm/s
7 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
8 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
9 At low speeds, the drag force is
A. proportional to speed
B. inversely proportional to speed
C. not simply proportional to speed
D. none of them
10 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

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