Practice Test Geeks(SAW) Submerged Arc Welding Certification Practice Test
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Transmission & Drivetrain Systems Flashcards

7 cards from real SAW practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Transmission & Drivetrain Systems flashcards as text

  1. When establishing a SAW procedure qualification for rebuilding transmission gear blanks, the essential variable 'base metal P-number change' requires:

    Answer: A complete new procedure qualification test

    Under AWS D1.1 and related codes, changing the base metal P-number is an essential variable that invalidates the existing procedure and requires requalification.

  2. SAW on a propeller shaft requires a minimum preheat of 300°F. The preheat temperature is best measured:

    Answer: On the base metal at least 3 inches from the joint

    AWS standards require preheat temperature to be checked on the base metal surface within 3 inches of the joint to ensure the steel itself is at the specified temperature.

  3. Which weld discontinuity is SAW most inherently resistant to compared to other arc processes, due to its process characteristics?

    Answer: Porosity from atmospheric contamination

    The thick flux blanket in SAW completely excludes atmospheric nitrogen and oxygen from the arc and molten pool, virtually eliminating porosity from atmospheric contamination.

  4. After SAW repair of a cracked differential housing, the weld is inspected with ultrasonic testing. A linear indication parallel to the weld axis at mid-thickness most likely represents:

    Answer: Lack of inter-run fusion (cold lap)

    A planar linear indication at mid-thickness parallel to the weld axis is characteristic of lack of inter-run fusion between adjacent SAW passes.

  5. A SAW procedure for drivetrain components specifies a maximum heat input of 90 kJ/in. Heat input is calculated as:

    Answer: (60 × Voltage × Amperage) / Travel Speed

    Heat input (kJ/in) = (60 × V × A) / S, where voltage (V) and amperage (A) are multiplied by 60 to convert from seconds to minutes when travel speed (S) is in inches per minute.

  6. On a long SAW weld seam of a driveshaft tube, the operator notices the arc voltage gradually increasing over the length of the weld. The most likely cause is:

    Answer: Increasing contact tip to work distance (CTWD)

    As CTWD increases, resistance in the wire extension rises, causing the power source to compensate by raising voltage to maintain the set current.

  7. A SAW weld on a heavy-duty differential housing fails radiographic inspection due to slag inclusions. The root cause investigation should first examine:

    Answer: Interpass cleaning practice between weld layers

    Incomplete slag removal between passes traps solidified slag, which is then encapsulated by the next bead, creating the slag inclusions seen on radiography.