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  2. Oil burner - Wikipedia

    en.wikipedia.org/wiki/Oil_burner

    To set the heat output of the burner, the rate of fuel delivery via the nozzle must be adjustable. This is often achieved by an adjustable pressure relief valve between the pump and the nozzle. When the set pressure is reached (usually 100 psi), this valve opens and allows excess oil to flow through a bypass back to the fuel tank or the pump ...

  3. Electrical discharge machining - Wikipedia

    en.wikipedia.org/wiki/Electrical_discharge_machining

    A further strategy consists in using a set of electrodes with different sizes and shapes during the same EDM operation. This is often referred to as multiple electrode strategy, and is most common when the tool electrode replicates in negative the wanted shape and is advanced towards the blank along a single direction, usually the vertical ...

  4. Flame rectification - Wikipedia

    en.wikipedia.org/wiki/Flame_rectification

    Flame rectification is a phenomenon in which a flame can act as an electrical rectifier.The effect is commonly described as being caused by the greater mobility of electrons relative to that of positive ions within the flame, [1] and the asymmetric nature of the electrodes used to detect the phenomenon.

  5. Auxiliary electrode - Wikipedia

    en.wikipedia.org/wiki/Auxiliary_electrode

    The auxiliary electrode may be isolated from the working electrode using a glass frit. Such isolation prevents any byproducts generated at the auxiliary electrode from contaminating the main test solution: for example, if a reduction is being performed at the working electrode in aqueous solution, oxygen may be evolved from the auxiliary electrode.

  6. Four-terminal sensing - Wikipedia

    en.wikipedia.org/wiki/Four-terminal_sensing

    Four-point measurement of resistance between voltage sense connections 2 and 3. Current is supplied via force connections 1 and 4. In electrical engineering, four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements ...

  7. Liquid rheostat - Wikipedia

    en.wikipedia.org/wiki/Liquid_rheostat

    Unlike a solid resistor, the liquid resistor is self healing in the event of overload. Normally the resistance is set up during commissioning, and then left fixed. [7] Modern motor starters [8] are totally enclosed and the electrode movement is servo motor controlled. Typically a 1 tonne tank will start a 1 megawatt slip ring type motor, but ...

  8. Auto reignition - Wikipedia

    en.wikipedia.org/wiki/Auto_reignition

    Auto reignition lowers the risk of gas leaks: if a flame goes out during operation, for example, from vibration or a gust of wind; due to misoperation—a user might not understand the "light" position must be maintained for about 0.5 to 2 seconds before turning the burner knob on fully.

  9. Arc welding - Wikipedia

    en.wikipedia.org/wiki/Arc_welding

    Gas tungsten arc welding (GTAW), or tungsten/inert-gas (TIG) welding, is a manual welding process that uses a non-consumable electrode made of tungsten, an inert or semi-inert gas mixture, and a separate filler material. Especially useful for welding thin materials, this method is characterized by a stable arc and high quality welds, but it ...

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