Wonderful engineering-explained with animations.



      MEANING OF TECHNOLOGY AND ITS USE

Related Terms

The purposeful application of information in the design, production, and utilization of goods and services, and in the organization of human activities.
Technology can be described in the following ways:

Tangible: blueprints, models, operating manuals, prototypes.

Intangible: consultancy, problem-solving, and training methods.

High: entirely or almost entirely automated and intelligent technology that manipulates ever finer matter and ever powerful forces.

Intermediate: semiautomated partially intelligent technology that manipulates refined matter and medium level forces.

Low: labor-intensive technology that manipulates only coarse or gross matter and weaker forces.


 1.Hydroelectricity or hydroelectric power is the electricity obtained by harnessing the power of water flowing down from a high level. It is a timeless and renewable resource. Huge generators convert the potential energy of falling or fast moving water into electrical energy.





2.Steering is the collection of components, linkages, etc. which allows any vehicle (car, motorcycle, bicycle) to follow the desired course. An exception is the case of rail transport by which rail tracks combined together with railroad switches (and also known as 'points' in British English) provide the steering function. The primary purpose of the steering system is to allow the driver to guide the vehicle.





3. sewing machine is a machine used to stitch fabric and other materials together with thread. Sewing machines were invented during the first Industrial Revolution to decrease the amount of manual sewing work performed in clothing companies. Since the invention of the first working sewing machine, generally considered to have been the work of Englishman Thomas Saint in 1790,[1] the sewing machine has greatly improved the efficiency and productivity of the clothing industry.
Home sewing machines are designed for one person to sew individual items while using a single stitch type. In a modern sewing machine the fabric easily glides in and out of the machine without the inconvenience of needles and thimbles and other such tools used in hand sewing, automating the process of stitching and saving time.

4.The heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of thecirculatory system. Blood provides the body with oxygen and nutrients, as well as assists in the removal of metabolic wastes. In humans, the heart is located between the lungs, in the middle compartment of the chest.





5.The frequency of a sine wave is the number of complete cycles that happen every second. (A cycle is the same as the period, see below.) In the bouncing weight above, the frequency is about one cycle per second.




6.Flow of electric charge....It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma. The SI unit for measuring anelectric current is the ampere, which is the flow of electriccharge across a surface at the rate of one coulomb per second.Electric current is measured using a device called an ammeter.





8.sewing machine is a machine used to stitch fabric and other materials together with thread. Sewing machines were invented during the first Industrial Revolution to decrease the amount of manual sewing work performed in clothing companies. Since the invention of the first working sewing machine, generally considered to have been the work of Englishman Thomas Saint in 1790, the sewing machine has greatly improved the efficiency and productivity of the clothing industry.
Home sewing machines are designed for one person to sew individual items while using a single stitch type. In a modern sewing machine the fabric easily glides in and out of the machine without the inconvenience of needles and thimbles and other such tools used in hand sewing, automating the process of stitching and saving time.







9.A current of electricity is a steady flow of electrons. When electrons move from one place to another, round a circuit, they carry electrical energy from place to place like marching ants carrying leaves. Instead of carrying leaves, electrons carry a tiny amount of electric charge.





10.An electrical bus bar is defined as a conductor or a group of conductor used for collecting  electrical energy from the incoming feeders and distributes them to the outgoing feeders. In other words, it is a type of electrical junction in which all the incoming and outgoing electrical current meets. Thus, the electrical bus bar collects the electrical energy at one location. When the fault occurs in any section of the bus bar, all the circuit equipment connected to that section must be tripped to give complete isolation in the shortest possible time.
The bus-bars used in electrical substations usually have rectangular cross section bars, but they can be in another shape also, as round tubes, solid round bars, or shape tubes. The bus-bar are usually made up of aluminum.  Aluminum have several advantages over copper such as higher conductivity, lower cost, excellent corrosion resistance, etc.



11.A fluorescent lamp or a fluorescent tube is a low pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.




12.Aircraft engines are built to very different criteria to those in automobiles. As you cannot pull over to the side of the sky in the event of breakdown, reliability has been the first and foremost priority. These designs have been around for decades, and just about every possible bug has been designed out. They are also designed to give maximum power output continuously for 2000 hours. If you tried that with an automobile engine, it would be in the scrap yard very fast indeed! As a student pilot, you will be expected to understand the basic principles of operation, and you will be taught how to check oil levels and check for integrity of the alternator belt.





13.A V-shaped engine with eight cylinders = V8 — four in each cylinder bank. The combustion chamber in an engine is where the magic happens. It's where fuel, air, pressure, and electricity come together to create the small explosion that moves the car's pistons up and down, thus creating the power to move the vehicle.





  1. 14.The frequency of a sine wave is the number of complete cycles that happen every second. (A cycle is the same as the period, see below.) In the bouncing weight above, the frequency is about one cycle per second.







15.Our solar system consists of an average star we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes: the satellites of the planets; numerous comets, asteroids, and meteoroids; and the interplanetary medium.







16.sine wave or sinusoid is a mathematical curve that describes a smooth repetitive oscillation. It is named after the function sine, of which it is the graph. It occurs often in pure and appliedmathematics, as well as physics, engineering, signal processing and many other fields. Its most basic form as a function of time (t) is:
where:
  • A = the amplitude, the peak deviation of the function from zero.
  • f = the ordinary frequency, the number of oscillations (cycles) that occur each second of time.
  • ω = 2πf, the angular frequency, the rate of change of the function argument in units ofradians per second
  •  = the phase, specifies (in radians) where in its cycle the oscillation is at t = 0.
    • When  is non-zero, the entire waveform appears to be shifted in time by the amount /ω seconds. A negative value represents a delay, and a positive value represents an advance.

The sine wave is important in physics because it retains its wave shape when added to another sine wave of the same frequency and arbitrary phase and magnitude. It is the only periodic waveform that has this property. This property leads to its importance in Fourier analysis and makes it acoustically unique.













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