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Discussion :: GATE Mechanical

  1. In a DC arc welding operation, the voltage-arc length characteristic was obtained as Varc = 20 + 5l where the arc length l was varied between 5 mm and 7 mm. Here Varc denotes the arc voltage in Volts. The arc current was varied from 400 A to 500 A. Assuming linear power source characteristic, the open circuit voltage and the short circuit current for the welding operation are
  2. A.
    45 V, 450 A
    B.
    75 V, 750 A
    C.
    95 V, 950 A
    D.
    150 V, 1500 A

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    Workspace

    Answer : Option C

    Explanation :

    -NA-


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