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6. Which shielding gas improves FCAW weld penetration?

a. Argon
b. Carbon dioxide
c. Oxygen
d. Hydrogen

7. operating voltage of a welding machine, which is produced during welding, is also known as the
a. open-circuit voltage
b. utility voltage
C. primary input voltage
d. arc voltage

8. In engines that power generators, the engine speed is controlled by
a. governors
b. rectifiers
c. transformers
d. alternators

9. A duty cycle is the percentage of a 10-minute period during which a welding machine can continuously
a. maintain a constant voltage as the output current varies
b. produce a constant current over a wide voltage range
C. produce its rated amperage without overheating
d. establish an arc between the end of the wire electrode and the workpiece

10. Welder power sources usually contain controls for adjusting arc voltage, slope, and
a. resistance
b. inductance
C. capacitance
d. conductance

11. Welding cable end connection styles typically consist of
a. lugs and quick disconnects
b. splices and fork terminals
C. alligator clips and C clamps
d. spools and clips

1 answer

Here are the answers to your questions:

  1. Which shielding gas improves FCAW weld penetration?
    b. Carbon dioxide

  2. The operating voltage of a welding machine, which is produced during welding, is also known as the
    d. arc voltage

  3. In engines that power generators, the engine speed is controlled by
    a. governors

  4. A duty cycle is the percentage of a 10-minute period during which a welding machine can continuously
    c. produce its rated amperage without overheating

  5. Welder power sources usually contain controls for adjusting arc voltage, slope, and
    b. inductance

  6. Welding cable end connection styles typically consist of
    a. lugs and quick disconnects