Grease and oil must be kept away from oxygen tanks used for brazing because they _____
a. will contaminate the brazed joints and cause them to fail
b. could cause an explosion in the presence of oxygen
c. are incompatible with lubricants used on the oxygen regulator
d. will clog the oxyacetylene torch
b
You might also like to view...
Technical pens are available in both refillable and what other form?
a. recyclable c. disposable b. commercial d. nontraditional
What is the proper equation for current I in the circuit below?
A. (V1 + V2) / 2R B. (V2 ? V1) / R C. (V1 ? V2) / R D. (V2 ? V1) / 2R E. V2 / R
The elapsed time between the instant a deviation of the controlled variable occurs in a closed-loop, and when the corrective action begins is referred to as the __________.
A. time lag B. pure lag C. dead time
On an R-11 or R-123 system, the refrigerant removal process normally starts with the removal of ____.
A. water B. liquid refrigerant C. vapor refrigerant D. oil