Question

a. acetylene pressure must be kept below;
a. 6 kilograms per square centimeter
b. 10 milliamps per second
c. 15 p.s.i
d. none of the above.

1. closed containers are ______ to weld or repair

a. relatively inexpensive
b. costly
c. safe
d. hazardous

1. material being cut on concrete floors can cause the floor to ______.

a. dry
b. explode
c. heat-up
d. discolour

1. if you are uncertain about the set-up or any aspect of the operation, you should

a. go ahead and try the operation.
b. check with your teacher before proceeding.
c. call the machine manufacturer.
d. none of the above.

1. state the gas types and pressures (with correct unit of measure) that we will use in our manufacturing class at idci. (4 marks)

Explanation:

Answer:

1. C. 15 p.s.i
2. D. hazardous
3. C. heat - up
4. B. check with your teacher before proceeding
5. (Common gas types and pressures in manufacturing (welding) context: Oxygen - typically up to around 150 psi (pounds per square inch); Acetylene - must be kept below 15 psi (as per safety standards for welding operations). Other gases like Argon (for TIG welding) may have different pressure ranges, but for oxy - fuel welding, Oxygen and Acetylene are key with pressures as above. However, specific to IDCI's manufacturing class, the exact values should align with their lab standards, but generally: Oxygen (e.g., 100 - 150 psi), Acetylene (≤15 psi), sometimes Propane (different pressure range) etc. But a typical answer for such a class: Oxygen: ~100 - 150 psi, Acetylene: ≤15 psi (units: psi - pounds per square inch))