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  2. Shielded metal arc welding - Wikipedia

    en.wikipedia.org/wiki/Shielded_metal_arc_welding

    The first two or three digits of the number specify the tensile strength of the weld metal, in thousand pounds per square inch (ksi). The penultimate digit generally identifies the welding positions permissible with the electrode, typically using the values 1 (normally fast-freeze electrodes, implying all position welding) and 2 (normally fast ...

  3. Fusible link - Wikipedia

    en.wikipedia.org/wiki/Fusible_link

    A mechanical fusible link is a device consisting of two strips of metal soldered together with a fusible alloy that is designed to melt at a specific temperature, thus allowing the two pieces to separate. Mechanical fusible links are utilized as the triggering device in fire sprinkler systems and mechanical automatic door release mechanisms ...

  4. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  5. Fuse cutout - Wikipedia

    en.wikipedia.org/wiki/Fuse_cutout

    The fuse elements used in most distribution cutouts are tin or silver alloy wires that melt when subjected to high enough current. Ampere ratings of fuse elements vary from 1 ampere to 200 amperes but a solid door will allow the full 300 ampere capacity of the cutout to be utilized.

  6. Fusible plug - Wikipedia

    en.wikipedia.org/wiki/Fusible_plug

    A fusible plug operates as a safety valve when dangerous temperatures, rather than dangerous pressures, are reached in a closed vessel. In steam boilers the fusible plug is screwed into the crown sheet (the top plate) of the firebox, typically extending about 1 in (25 mm) into the water space above it. Its purpose is to act as a last-resort ...

  7. Fusibility - Wikipedia

    en.wikipedia.org/wiki/Fusibility

    The most common test used to determine fusibility is to join two pieces with a variable heat source, increasing the temperature or power used in steps, and testing bond strength for each step. If there is no step with good bond strength after joining, then fusibility is said to be low.

  8. Rope-burning puzzle - Wikipedia

    en.wikipedia.org/wiki/Rope-burning_puzzle

    The fusible numbers are defined as the amounts of time that can be measured in this way. As well as being of recreational interest, these puzzles are sometimes posed at job interviews as a test of candidates' problem-solving ability, [ 1 ] and have been suggested as an activity for middle school mathematics students.

  9. Vertical stabilizer - Wikipedia

    en.wikipedia.org/wiki/Vertical_stabilizer

    The vertical stabilizer is the fixed vertical surface of the empennage. A vertical stabilizer or tail fin [1] [2] is the static part of the vertical tail of an aircraft. [1] The term is commonly applied to the assembly of both this fixed surface and one or more movable rudders hinged to it. Their role is to provide control, stability and trim ...

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