Transistors.

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals. Since…

Electric Vehicles

An electric vehicle used electric motors or traction motors for propulsion. Electric vehicles have been used since the 19th century when electricity was preferred to the internal combustion engine due to the level of comfort and ease of operation it offered it’s users. However, the internal combustion engine became the dominant mode of propulsion for…

Radar

Radar or Radio Detection and Ranging is a system of detecting objects using radio waves. Radar employs radio waves to determine the range, angle and velocity of objects such as aircraft, missiles, ships, motor vehicles etc. A radar system consist of a transmitter producing electromagnetic waves in radio or microwave domain, a transmitting and receiving…

Integrated Circuits

An integrated circuit or IC, also known as chip or microchip is a set of electronic circuits on one small flat piece of semiconductor material usually silicon. The integration of large numbers of tiny MOS transistors into a small chip results in circuits that are many times smaller, faster and less expensive than those constructed…

Semiconductors

A semiconductor is a material whose electrical conductivity value falls between a conductor such as an iron rod and an insulator such as glass. Semiconductors are employed in the manufacture of various kinds of electronic devices such as diodes, transistors and integrated circuits. These devices have found wide applications because of their reliability, compactness, power,…

3D Printing

3D printing involves building a three dimensional object from a computer aided design model by successively adding materials layer by layer on top of each other using a 3D printing machine. Within the last decade 3D printing usage has increased dramatically that this technique is now used for industrial applications such as building apartments and…

Air Compressor

<a An air compressor is a device used to compress atmospheric air taken in through inlet valves and compressed to a high pressure, the compressed air being used for various purposes such as cleaning, spray painting, pneumatic operations, starting the main engine, etc. Air compressors force air into a tank, increasing its pressure. When the…

Sonar

<!– wp:paragraph Sonar or Sound Navigation Ranging is a technology which involves the use of sound to detect vessels and other objects underwater or on the surface to aid navigation and avoid collisions. Sonar are of two types: active sonar and passive sonar. Active sonar emits pulses of sounds and listen to echoes from other…

Refrigeration

Refrigeration is defined as the science of providing and maintaining temperature below that of atmospheric temperature. It means continuous extraction of heat from a body which is already below atmospheric temperature. Refrigeration involves cooling a space, substance or system to lower its temperature or maintain that temperature below its ambient temperature. Energy in the form…

Stern Tubes

<a The stern tube is a hollow tube located at the lower stern part of the ship carrying the tail shaft and connecting it to the propeller,bearing for the tail shaft, lubrication arrangement and sealing arrangement. The propeller shaft or tail shaft is supported in a stern tube bearing. The bearing being at the end…