Chapter 1 Welding Processes and
Equipment 2025/2026 Exam Questions
and Correct Answers | New Update
An arc plasma consists of
a. atoms and gas molecules.
b. free electrons and positive ions.
c. Carbon atoms and hydrogen molecules.
d. light of a fixed wavelength - 🧠 ANSWER ✔✔b. free electrons and positive ions.
Which of the following welding processes is the most commonly used?
a. Resistance Welding
b. Blazing
,c. Solid State Welding
d. Arc Welding - 🧠 ANSWER ✔✔d. Arc Welding
The most arc efficient welding process is the _______ process.
a. GTAW
b. SMAW
c. FCAW
d. SAW - 🧠 ANSWER ✔✔d. SAW
Which two areas represent the largest voltage drop in a welding arc?
a. Electrode extension and Cathode drop zone
b. Electrode extension and Anode drop zone
c. Arc plasma and electrode extension
d. Cathode drop zone and Anode drop zone - 🧠 ANSWER ✔✔d. Cathode drop
zone and Anode drop zone
The pinch force that aids in droplet detachment during spray transfer is produced
by
a. a self—induced magnetic field
, 3
b. gravity
c. surface tension
d. the plasma jet - 🧠 ANSWER ✔✔a. a self—induced magnetic field
Which of the following welding processes produces the least hydrogen weld metal
content?
a. SMAW
b. GTAW
c. SAW
d. FCAW - 🧠 ANSWER ✔✔b. GTAW
The majority of the arc energy is transferred to the work when the GTAW process
is operated in what polarity.
a. AC
b. DCEP
c. DCEN
d. AC unbalanced - 🧠 ANSWER ✔✔c. DCEN
Modern inverter GTAW power sources use all methods for arc starting, except for?
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, a. Scratch
b. High Frequency
c. Steel Wool
d. Electronic Touch - 🧠 ANSWER ✔✔c. Steel Wool
The highest deposition rate in the SMAW process occurs in
a. DCEN
b. DCEP
c. AC
d. AC unbalanced - 🧠 ANSWER ✔✔a. DCEN
The arc force control in CC welding power sources is used to ___________ in the
SMAW process.
a. reduce the penetration of the weld when the arc length is decreased
b. increase the penetration of the weld when the arc length is decreased
c. reduce the penetration of the weld when the arc length is increased