Iron Worker Final
the kindling temperature of steel is - Answer-1600 degrees
one advantage of the OFC process is that it is - Answer-portable
the materials that can be cut with OFC are limited primarily to _______materials - Answer-ferrous
A welder opens the cylinder valve slightly and closes it immediately. what process did he/she perform? -
Answer-cracking the cylinder
A device that prevents the reverse flow of gasses that would result in a combustible mixture in the
welding hose is a - Answer-check valve
A condition in which the flame burns inside the tip, torch or hose is known as a - Answer-flashback
acetylene cylinder valves should be opened only approximately one to one-and-a-half turns to - Answer-
provide quick closure in case of an emergency
most oxygen and fuel gas regulators have gauges that measure actual pressure in the cylinder and -
Answer-pressure at the torch
while oxygen cylinder pressure may be as high as 2200 psi, working pressure ranges
from_______to______psi. - Answer-1, 50
, which is the best flame for welding and cutting? - Answer-Neutral
Which of the following conditions will cause carburizing or reducing flame? - Answer-excess acetylene
If an operator using an OFC process produced an irregular cut surface with pitting and undercutting, the
most likely cause is - Answer-a dirty cutting tip
which of the following is basic definition of concrete? - Answer-artificially made rock
what is the term for the weight of all moving and constantly acting loads? - Answer-live load
which of the following is not one of the three basic components of concrete? - Answer-lime
which of the following is the most accurate range of strengths for concrete? - Answer-3000 to 20,000 psi
when reinforcing concrete, what does the steel add to the concrete? - Answer-tensile strength
what size wire is used to tie most rebar? - Answer-16
which of the following is a low foundation wall of sufficient depth to extend below the frost line? -
Answer-grade beam
concrete is strong in compression and______, but weak in______. - Answer-shear, tension
what are the small "U" or "W" shaped bars placed across a beam to resist diagonal tension known as? -
Answer-stirrups
the kindling temperature of steel is - Answer-1600 degrees
one advantage of the OFC process is that it is - Answer-portable
the materials that can be cut with OFC are limited primarily to _______materials - Answer-ferrous
A welder opens the cylinder valve slightly and closes it immediately. what process did he/she perform? -
Answer-cracking the cylinder
A device that prevents the reverse flow of gasses that would result in a combustible mixture in the
welding hose is a - Answer-check valve
A condition in which the flame burns inside the tip, torch or hose is known as a - Answer-flashback
acetylene cylinder valves should be opened only approximately one to one-and-a-half turns to - Answer-
provide quick closure in case of an emergency
most oxygen and fuel gas regulators have gauges that measure actual pressure in the cylinder and -
Answer-pressure at the torch
while oxygen cylinder pressure may be as high as 2200 psi, working pressure ranges
from_______to______psi. - Answer-1, 50
, which is the best flame for welding and cutting? - Answer-Neutral
Which of the following conditions will cause carburizing or reducing flame? - Answer-excess acetylene
If an operator using an OFC process produced an irregular cut surface with pitting and undercutting, the
most likely cause is - Answer-a dirty cutting tip
which of the following is basic definition of concrete? - Answer-artificially made rock
what is the term for the weight of all moving and constantly acting loads? - Answer-live load
which of the following is not one of the three basic components of concrete? - Answer-lime
which of the following is the most accurate range of strengths for concrete? - Answer-3000 to 20,000 psi
when reinforcing concrete, what does the steel add to the concrete? - Answer-tensile strength
what size wire is used to tie most rebar? - Answer-16
which of the following is a low foundation wall of sufficient depth to extend below the frost line? -
Answer-grade beam
concrete is strong in compression and______, but weak in______. - Answer-shear, tension
what are the small "U" or "W" shaped bars placed across a beam to resist diagonal tension known as? -
Answer-stirrups
