Mechanism Gears Steam engine 4 Stroke engine Turbojet Exercices Levers. Give me the place to stand, and I shall move the earth (Arquimedes) A lever is a simple machine that makes work easier; it involves moving a load around a pivot using a force. In a lever there is a […]
Materials Building Structure Forces Types Exercices Materials Exercises 1º The function of slates is to prevent water from penetrating the roof of houses. They are principally made of clay and they are cooked at a high temperature. What is the name of one of the components which facilitates […]
Materials Building Structure Forces Types Exercices Construction Materials. Ceramics, Glass and reinforced concrete Posted on December 14th, 2009 by Technology Department Ceramics: All types of bricks used in construction are ceramic materials that are modelled and dried by the action of heat. The most important components of bricks are […]
Materials Building Structure Forces Types Exercices Materials. Introduction Structureis comprised of pillars, beams and tie-beams made of reinforced concrete or iron. The structural system of every house is required to support and transmit various loads. These Loads can be classed as static or dynamic. In houses, the […]
Materials Building Structure Forces Types Exercices Building Materials. The illustration shown on the right represents the essential elements of a modern Building. Parts: Foundations: This is a structure ( made, mainly, of cement, iron and gravel ) that transfers loads to the earth. The primary design concerns are […]
Materials Building Structure Forces Types Exercices Materials. Introduction Millions of years ago, man used to manage simples materials, such as wood, to make unsophisticated tools or constructions Nowadays, man has invented new materials which can be used in many different situations, even in our own bodies ( See […]
Computers Drivers Computers Exercises Pc exercises Computer Questions about Computers 1.the function of computers is … 2.How many types of computer do you know? 3.Where are the programs stored ? 4.Example of an exit peripherals 5.Example of an input peripherals 6.Definition of hardware and software 7.What […]
Computers Drivers Computers Exercises The Mouse The mouse is a pointing device generally made of plastic. It is used by one of the hands of the computer user and it detects this hand’s movement in two dimensions on the level surface the mouse is on. […]
Electricity exercises Read and complete: Voltage and current A battery is a source of electrical energy – it provides the ‘pressure’ which causes electricity to flow. We measure this electrical pressure in volts, V. The higher the voltage, the greater the pressure. The flow of electricity is called current […]
Electricity Type of currents Moving charges Ohm low Power Electricity: Moving charges Posted on October 24th, 2008 by Technology Department ENERGY CHANGES IN A SIMPLE ELECTRIC CIRCUIT The electric power in watts represents the rate at which energy is converted from electrical energy to some other form of energy, e.g., […]