Basic concepts

Fuel Cell Types

Following are the most common fuel cell types Alkaline Fuel Cell (AFC) Phosphoric Acid Fuel Cell (PAFC) Molten Carbonate Fuel Cells (MCFC) Solid Oxide Fuel Cells (SOFC) Proton/polymer Exchange Membrane Fuel Cells (PEMFC) Fuel Cell Types Important fuel cell types are described here except the alkaline fuel cell (AFC) as it is discussed earlier. Phosphoric …

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Wheatstone Bridge Working Principle

Wheatstone Bridge Working Principle   Wheatstone devised a bridge-arrangement of resistances by which the resistance of a given conductor can be determined. This arrangement is called the ‘Wheatstone bridge‘.   In the arrangement, four resistances are so connected as to form a parallelogram. In one diagonal of this parallelogram is connected a galvanometer and in …

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Diamagnetic | Paramagnetic | Ferromagnetic Materials

Diamagnetic Materials   These materials are feebly repelled by a magnet. When placed in a magnetizing field, they are feebly magnetized in a direction opposite to that of the field. Thus, the susceptibility of diamagnetic material is small and negative.   Further, the flux density in a diamagnetic material placed in a magnetizing field is …

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High Resistivity Materials

High resistivity materials are used for making resistance elements for heating devices, starters for electric motors, resistances used in precision measuring instruments, loading resistances and rheostats and filaments for incandescent lamps.   High resistivity materials are used in all such applications where a large value of resistance is required. If low resistivity materials were used …

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Properties & Applications of Superconductors

Hi friends,   In this article, am discussing properties of superconductors and applications of superconductors. This article will provide you sufficient information about superconductors.   The resistivity of most metals increases with increase in temperature and vice-versa. There are some metals and chemical compounds whose resistivity becomes zero when their temperature is brought near 0° …

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