IRONWORKER NCCER EXA M NEWEST
COMPLETE 150 QUESTIO NS AND
CORRECT DETAILED ANS WERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
Question: The kindling temperature of steel is
Correct Answer: 1600 degrees
Question: One advantage of the OFC process is that it is
Correct Answer: portable
Question: The materials that can be cut with OFC are limited
primarily to _______materials
Correct Answer: ferrous
Question: A welder opens the cylinder valve slightly and
closes it immediately. what process did he/she perform?
Correct Answer: cracking the cylinder
Question: 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
Question: A condition in which the flame burns inside the tip,
torch or hose is known as a
Correct Answer: flashback
Question: 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
Question: Most oxygen and fuel gas regulators have gauges
that measure actual pressure in the cylinder and
Correct Answer: pressure at the torch
Question: While oxygen cylinder pressure may be as high as
2200 psi, working pressure ranges from_______to______psi.
Correct Answer: 1, 50
Question: Which is the best flame for welding and cutting?
Correct Answer: Neutral
Question: Which of the following conditions will cause
carburizing or reducing flame?
Correct Answer: excess acetylene
Question: 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
Question: Which of the following is basic definition of
concrete?
Correct Answer: artificially made rock
Question: What is the term for the weight of all moving and
constantly acting loads?
Correct Answer: live load
Question: Which of the following is not one of the three basic
components of concrete?(a) lime (b) cement (c) water (d) aggregate
Correct Answer: lime
Question: Which of the following is the most accurate range
of strengths for concrete?
Correct Answer: 3000 to 20,000 psi
Question: When reinforcing concrete, what does the steel add
to the concrete?
Correct Answer: tensile strength
Question: What size wire is used to tie most rebar?
Correct Answer: 16
Question: Which of the following is a low foundation wall of
sufficient depth to extend below the frost line?
Correct Answer: grade beam
Question: Concrete is strong in compression and______, but
weak in______.
Correct Answer: shear, tension
Question: What are the small "U" or "W" shaped bars placed
across a beam to resist diagonal tension known as?
Correct Answer: stirrups
Question: Bar supports are also referred to as
Correct Answer: accessories
Question: The function of the______is to safely transmit the
superstructure loads to the ground without causing settlement.