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  2. Permanent magnet motor - Wikipedia

    en.wikipedia.org/wiki/Permanent_magnet_motor

    Alnico is a NRE permanent magnetic material used in permanent magnet motor applications such as magnetic speed and flow sensors, electric generators, and consumer goods. These magnets exhibit weaker performance in comparison to NdFeB and SmCo counterparts but still maintain high coercivity and are far cheaper due to their lack of rare earth metals.

  3. Fire class - Wikipedia

    en.wikipedia.org/wiki/Fire_class

    A fire class is a system of categorizing fire with regard to the type of material and fuel for combustion.Class letters are often assigned to the different types of fire, but these differ between territories; there are separate standards for the United States (NFPA 10 Chapter 5.2.1-5.2.5), Europe (DIN EN2 Classification of fires (European Standard) ISO3941 Classification of fires ...

  4. Fire extinguisher - Wikipedia

    en.wikipedia.org/wiki/Fire_extinguisher

    Monoammonium phosphate, also known as ABC dry chemical, tri-class, or multipurpose, is used on class A, B and C fires. It receives its class A rating from the agent's ability to melt and flow at 374 °F (190 °C) [27] to smother the fire. It is more corrosive than other dry chemical agents and is pale yellow in color. Sodium bicarbonate ...

  5. Active fire protection - Wikipedia

    en.wikipedia.org/wiki/Active_fire_protection

    The most common extinguisher is the ABC extinguisher and are found in most offices and homes. It can be used on normal fires, liquid fires, and electrical fires. There are also special extinguishers for kitchen fires and for use on burning metals, those being Class K and Class D respectively. [3]

  6. Glossary of firefighting equipment - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firefighting...

    CO 2 extinguisher Fire extinguisher that releases carbon dioxide gas to displace oxygen to smother and cool a fire, such as a flammable liquid. Combination nozzle A low pressure fog nozzle (usually 120 to 150 lbf/in² or 820 to 1030 kPa that can be adjusted to produce a near straight stream. Also commonly referred to as a Taskforce tip (TFT).

  7. 'Extremely dangerous': Feds urge against using select fire ...

    www.aol.com/extremely-dangerous-feds-urge...

    The fire pits presents two major hazards, including the risk of third degree burns dealt in less than a second, caused by flame temperatures over 1,600°F. The commission also warned that flames ...

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