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

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 2

The fluid is incompressible, if itsdensity is

Question # 3

The equation of continuity is

Question # 4

Glycerin has viscosity _____ the viscosity of water:

Question # 5

At low speeds, the drag force is

Question # 6

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

Question # 7

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 8

Matter is made up of very tiny particles called

Question # 9

N s m-2is unit of:

Question # 10

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 11

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

Question # 12

At the starting point of the free fall motion of an object, its acceleration will be

Question # 13

What is another name for laminar flow?

Question # 14

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

Question # 15

During the steady flow, different streamlines

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
A. 125 J
B. 90 J
C. 160 J
D. 85 J
2 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
3 The resistance offered by a fluid to a solid moving inside it is called:
A. Drag force
B. Surface force
C. Viscosity
D. None of these
4 The effect of friction between different layers of a flowing fluid is described in terms of
A. motion of fluid
B. nature of fluid
C. colour of fluid
D. viscosity of fluid
5 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
6 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
7 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
8 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
9 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
10 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m

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