Higher ____________________ settings are required to maintain a short arc that gives good fusion with a minimum of slag inclusions.
Fill in the blank(s) with the appropriate word(s).
amperage
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?____ varnishes are excellent for materials exposed to the weather and can be used on wood marine products.
A. ? Silicone B. ? Polyurethane resin C. ? Alkyd resin D. ? Phenol formaldehyde
Technician A says that a system should be evacuated for twice as long if the vacuum pump will only pull it down to 20"Hg. Technician B says that the system might have a leak in it if it will not pull down into a deep vacuum. Which technician is correct
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Sometimes the current will rise and fall at the same rate as the voltage and will reverse the direction of flow when the voltage reverses polarity. In this condition, the current is said to be ____ with the voltage.
a. in phase b. out of phase c. resistive d. inductive
What is accomplished by having a compressor that is equipped with unloaders?
What will be an ideal response?