Activity No.1
Direction Write the letter of the correct answer in every item Provide a separate answer sheet
1. Injection torches can use fuel gases with pressures as low as
A 7 psi (0.49 kg/cm2)
C 2 psi (0 14 kg/cm2)
B. 6 oz lin2 (26.3 g/cm2)
D 9 oz lin2 (39 4 g/cm2)
2 Oxygen and acetylene hoses should be color coded, which from the given answers is correct
A Oxygen green, Acetylene black or red
COxygen green or black, Acetylene red
B Oxygen green, Acetylene red
D Oxygen green or black, Acetylene red or black
3. Considered as a line pressure gauge
A Regulator
C Low pressure gauge
B. High pressure gauge
D. Valve gauge
4. A typical characteristic of a neutral flame
A Acetylene and with excess Oxygen
C Balance of Acetylene and Oxygen
B Oxygen and with excess Acetylene
D. Acetylene burning in the atmosphere
5. The term "cracking" means
A Blowing-out of dirt lodged in the valve
B. Release of gas from the pressure gauge
C Release of gas from the torch valve
D. Release of gas from the torch tip
"Topic" smaw/welding​