Ironworker NCCER Latest Update 2025-2026 170 Questions and 100% Verified Correct Answers Guaranteed A+
A condition in which the flame burns inside the tip, torch or hose is known as a -
CORRECT ANSWER: flashback
A device that prevents the reverse flow of gasses that would result in a combustible
mixture in the welding hose is a - CORRECT ANSWER: check valve
A welder opens the cylinder valve slightly and closes it immediately. what process did
he/she perform? - CORRECT ANSWER: cracking the cylinder
acetylene cylinder valves should be opened only approximately one to one-and-a-half
turns to - CORRECT ANSWER: provide quick closure in case of an emergency
All arc-welding processes require a continuous supply of electrical current. What type of
current can be used for SMAW? - CORRECT ANSWER: AC or DC
An electrode is classified as E6010. What does the 60 stand for? - CORRECT
ANSWER: tensile strength
An electrode is classified as E7024. What does the 2 stand for? - CORRECT
ANSWER: flat and horizontal
Arc length can be defined as the distance from the end of the electrode to the______. -
CORRECT ANSWER: work piece
Bar supports are also referred to as - CORRECT ANSWER: accessories 1 / 3
Before a column can be erected, the shims or leveling nuts in place should be checked
to ensure that they are set at the proper______. - CORRECT ANSWER: elevation
Blocks, when Reeved, work like a machine and are not 100% efficient because
of______. - CORRECT ANSWER: friction
Bolts that us bolted angle cleat connections and share bolt holes between the webs of columns and girders over more than one bay of a structure are called______. -
CORRECT ANSWER: double
columns are made up of vertical bars and - CORRECT ANSWER: bands or ties
concrete is strong in compression and______, but weak in______. - CORRECT
ANSWER: shear, tension
During the shaking out, which of the following should be marked on each piece, in addition to the fabricators mark? - CORRECT ANSWER: the centerline or balance point of the piece.
figure 3.2 illustrates a______. - CORRECT ANSWER: seven-part fall
For rigging ropes, the minimum acceptable factor of safety is______. - CORRECT
ANSWER: 5
If a cable that is too small in diameter is used for a welding application, then what could
be the result? - CORRECT ANSWER: heat up and could cause a fire
If a hook has been overloaded or is beginning to weaken, the______. - CORRECT
ANSWER: throat will open 2 / 3
If an operator using an OFC process produced an irregular cut surface with pitting and
undercutting, the most likely cause is - CORRECT ANSWER: a dirty cutting tip
If possible, keep the sling angled greater than______. - CORRECT ANSWER: 45
degrees
If reeving a pair of tackle blocks, one of which has more than two sheaves, which
sheave should the lead line go? - CORRECT ANSWER: center sheave of the upper
block.
If the notation for a wide-flange beam is W12×14×8'6", the 14 indicates______. -
CORRECT ANSWER: weight per foot of the beam in pounds.
If the structural steel to be used on a job site is galvanized, the bolts used should
be______. - CORRECT ANSWER: galvanized
in erecting a wall where the footings have been previously doweled, it is necessary for
all dowels to be______and______. - CORRECT ANSWER: straight, in-line
In figure 8.1, the A is the______angle and B is the______angle. - CORRECT
ANSWER: travel, work
in order to connect the column to its supports,______are required. - CORRECT
ANSWER: dowels
Most of the SMAW weld applications encountered will______beads when welding a single pass weld or on the first pass of a multiple pass weld. - CORRECT ANSWER: stringer
- / 3