Teacher Repository in Engineering Education
Conducting materials are good conductors of electricity and heat. Gold, silver, copper, aluminium are the examples of conducting materials.
The conducting materials play an important role in Engineering and Technology. Conducting materials are good conductors of electricity and heat. Gold, silver, copper, aluminium are the examples of conducting materials.
Each cycle of AC Fundamentals consists of two half cycles namely positive cycle and negative cycle. Current increases in magnitude, in one particular direction, attains maximum and starts decreasing, passing through zero it increases in opposite direction and behaves similarly.
In practice, most dielectric materials are solid. Examples include porcelain (ceramic), mica, glass, plastics, and the oxides of various metals. Some liquids and gases can serve as good dielectric materials. Dry air is an excellent dielectric, and is used in variable capacitors and some types of transmission lines. Distilled water is a fair dielectric. A vacuum is an exceptionally efficient dielectric.
Current tends to move through the conductors with some degree of friction, or opposition to motion. This opposition to motion is more properly called resistance. The amount of current in a circuit depends on the amount of voltage and the amount of resistance in the circuit to oppose current flow.
Electromagnetic Induction is a current produced because of voltage production (electromotive force) due to a changing magnetic field.
An electromechanical relay is a type of relay which function using a magnetic field produced by an electromagnetic coil when a control signal is applied to it. It is called as electromechanical since it has moving contacts in the output circuit which are operated by applying an electrical signal.
Most gadgets have tiny electronic circuits that can control machines and process information. Simply put, electronic circuits are the lifelines of various electrical appliances. This guide explains in detail about common electronic components used in electronic circuits and how they work.
Transformers are all about ?ratios?. The ratio of the primary to the secondary, the ratio of the input to the output, and the turns ratio of any given transformer will be the same as its voltage ratio. In other words for a transformer: ?turns ratio = voltage ratio?. The actual number of turns of wire on any winding is generally not important, just the turns ratio and this relationship is given as:
Electrical insulating materials are defined as materials which offer a very large resistance to flow of current, and for that reason they are used to keep the current in its proper path along the conductor.
In electrical machines and transformers the insulating materials applied to the conductors are required to be flexible, to have high specific electric strength (to reduce thickness to minimum) and ability to withstand unlimited cycles of heating and cooling.
The Star-Delta Transformation (Y-?) is a mathematical technique given by Edwin Kennelly in 1899 and is used to solve complex 3-phase resistive electrical circuits by transforming from Star(Y) design to Delta(?) design with the help of formulas
A single loudspeaker cannot fully reproduce the entire frequency range of recorded sound, so it is customary to divide the frequency spectrum into parts that are reproduced by different kinds of speakers designed for a particular frequency range. The low-frequency speaker is called a woofer, and the high-frequency speaker is called a tweeter. In many sound reproduction systems a third, or midrange, speaker is also used, and in a few systems there are separate ?subwoofers? and ?supertweeters? to
This starts as soon as the components arrive. Only by ensuring you have good components can you build good speakers, and only by ensuring your components always meet the design standards can you build consistently high performance speakers. Records are kept of every component delivery and trends monitored so supplier performance can be traced, tool wear can be seen and corrected before it affects performance, and potential problems spotted before they happen. Every driver is tested and inspected
Magnetic materials are materials studied and used mainly for their magnetic properties. The magnetic response of a materials is largely determined by the magnetic dipole moment associated with the intrinsic angular momentum, or spin, of its electrons. A material?s response to an applied magnetic field can be characterized as diamagnetic, paramagnetic, ferromagnetic or antiferromagnetic
This list may feel like a lot to remember, but odds are you already know much of it from experience and intuition! Keep in mind that mics are simply tools and there isn?t a tool that works well in every situation. Each tool has its strengths and weaknesses. Get comfortable with that idea, learn the characteristics outlined above, and you?ll be well-suited to capturing great sound no matter the environment.
When it comes to recording group vocals, sometimes simpler is better. If the circumstances are right, the single-mic approach is efficient, and can result in excellent sounding tracks. Do you have any insights into achieving great results using the single-mic technique? Let us know what worked for you in the comments.
World class engineer, drummer and educator Jim Pavett presents this tutorial through the perspectives of the drummer, the engineer and the studio owner. Whether you are a drummer looking to learn more about your instrument and craft, a recording engineer looking to perfect your drum recording technique, or a studio owner trying to select the right house kit for the studio , this series delivers.
Thevenin's theorem states that any two terminal linear network or circuit can be represented with an equivalent network or circuit, which consists of a voltage source in series with a resistor. ... Thevenin's equivalent circuit resembles a practical voltage source.
In electronics, an electronic switch is an electronic component or device that can switch an electrical circuit, interrupting the current or diverting it from one conductor to another. ... Electronic switches also consist of complex configurations that are assisted by physical contact.