Speaking of eme- part 2



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SPEAKING-of-EME-part2


SPEAKING of EME- part 2
Unit 1

The diagram illustrates 4 branches of engineering. That is mechanical, electrical, civil, and electronic. (The first is) Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, airports,// canals, dams, sewage systems, pipelines, structural components of buildings, and railways//
(second is) The mechanical engineering field requires an understanding of core areas including mechanics, dynamics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), computer-aided manufacturing (CAM), and product lifecycle management to design and analyze relevant to marine, automobile, aeronautical, heating and ventilating, and others. It is the branch of engineering that involves the design, production, and operation of machinery
(next is) Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism. it deals with electrical generating, electrical installation, lighting. Electronic engineering (also called electronics and communications engineering) is an electrical engineering discipline that utilizes nonlinear and active electrical components (such as semiconductor devices, especially transistors and diodes) to design electronic circuits, devices, integrated circuits, and their systems.

In the picture I can see 4 branches of engineering


They are civil, mechanical, electrical and electronic.
Mechanical engineering deals with marine, automotive, aircraft, fan and ventilation.
Electrical engineering deals with electricity generating, electrical installation and lighting.
Mining and medical engineering belong partly to mechanical engineering and partly to electrical enggineering
That’s all the information about 4 branches of engineering that I know

Unit 2

In the pictures, there are 3 figures about 3 forces in engineering. They are buoyancy, elasticity, friction force.


The first figure is about buoyancy force which is a reason make the ship doesn’t sink. in this figure, w stands for weight, which is the gravity force acting downwards. B stands for buoyancy acting upwards. Because the ship is in equilibrium, the resultant force is zero. The magnitudes of the weight and buoyancy forces must be the same, so the ship doesn’t sink. Any object will either float or sink in water depending on its density (how much a certain volume of it weighs). If it's denser than water, it will usually sink; if it's less dense, it will float. It doesn't matter how big or small the object is.
In second figure, There are a spring and a block. Elasticity makes the spring stretch and keeps the block up. The weight of the block pulls the spring down. To give equilibrium, the spring pulls up to oppose the weight. This upward force equals the weight of the block.
In last figure, I can see a box and a slope. I will explain why the box doesn’t slide down the slope. W denotes the weight of the box acting downwards. R denotes the reaction acting normal of the box. The resultant of the weight and the reaction try to pull the box down the slope. When placing an object on a plane with no inclination, the plane pushes on to the box with the same force as gravity pushes the box to it, thus making it sit perfectly still on the plane. There is a balance between the forces so they cancel each other out. If you tilt the plane and thereby give it an inclination the force of the object is no longer perpendicular to the plane. The only thing keeping the box in the picture from falling to the ground straight away is friction, which is magnitude is bigger than the magnitude of the resultant, so the box doesn’t slide down the slope.
That’s all I know about 3 forces in engineering.

In the pictures, there are 3 figures about 3 forces in engineering. They are buoyancy, elasticity, friction force.


The first figure is about buoyancy force which is a reason make the ship doesn’t sink. in this picture, w stands for weight which is the gravity force acting downwards. B stands for buoyancy acting upwards. Because the ship is in equilibrium, the resultant force is zero. The magnitudes of the weight and buoyancy forces must be the same, so the ship doesn’t sink.
Any object will either float or sink in water depending on its density (how much a certain volume of it weighs). If it's denser than water, it will usually sink; if it's less dense, it will float. It doesn't matter how big or small the object is.
In picture 2, There are a spring and a block. Elasticity makes the spring stretch and keeps the block up. The weight of the block pulls the spring down. To give equilibrium, the spring pulls up to oppose the weight. This upward force equals the weight of the block.
In picture 3, I can see a box and a slope. I will explain why the box doesn’t slide down the slope. W denotes the weight of the box acting downwards. R denotes the reaction acting normal of the box. The resultant of the weight and the reaction try to pull the box down the slope, The friction’s magnitude is bigger than the magnitude of the resultant, so the box doesn’t slide down the slope.
That’s all I know about 3 forces in engineering.
In the pictures, there are 3 figures about 3 forces in engineering. They are buoyancy, elasticity, friction force. The first figure is about buoyancy force which is a reason make the ship doesn’t sink. The second figure is the spring. The spring is pulled down because of the weight. The elasticity force, which is equilibrium with the weight, pulls the spring up. And that is the reason the spring stretch keeps the weight up.
In the last figure, there is the box on the slope. There is 3 force acting down on the box. The box doesn’t slide down the slope because the results of the weight and reaction are trying to pull the box down the slope. But the friction acts up the slope stops the box from sliding down.
That’s all I know about 3 forces in engineering.

In the picture I can see three figure about forces in engineering.


To begin with figure 1. The ship doesn’t sink because of buoyance. That force and gravity is the same so the ship is in equilibrium.
The next one in figure 2 is elasticity .A good example of this is a spring balance. The weight pulls down while the springs pull up. A spring balance can be mesured in N.
Last but not least, there is a box on the slope, friction moving up the slope to prevent the box from sliding down.
That all about the picture that I know.

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