ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

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

Question # 2

Bernoulli's equation is important in the field of

Question # 3

A massive object falls through a fluid:

Question # 4

An object moving through a fluid experiences a retarding force called a

Question # 5

Blood has a density

Question # 6

The fluid which is incompressible and non viscous is called

Question # 7

The rain drop falling from the sky reach the ground with

Question # 8

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

Question # 9

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 # 10

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 11

Stock's law holds for:

Question # 12

High speed meteors rushing through air reduces to ashes because of:

Question # 13

The law of conservation of mass gives us the

Question # 14

The electrical forces between the molecules of a liquid are

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
2 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
3 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
4 High speed meteors rushing through air reduces to ashes because of:
A. Force of gravity
B. High resistance of air
C. Drag force
D. None of these
5 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
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
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 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Air currents of the earth atmosphere
C. Surface tension effect
D. Viscous force exerted by air
8 The law of conservation of mass gives us the
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
9 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
10 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation

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