The welder's head gear that can be adjusted for multiple shades, delay and sensitivity is called:
A) Full face shield head gear
B) Auto-darkening head gear
C) SMAW PPE head gear
D) Passive-style head gear
E) None of the above
B
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A straight weld bead on the surface of a plate with little or no side-to-side electrode movement is known as a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
In the accompanying figure, the symbol in section identified with the number 3 indicates the ____.
A. width of the hole B. depth of the hole C. diameter of the hole D. diameter of the drill
For the ?-? circuit of Fig. 12.50, calculate the phase and line currents.
 figure 1.png)
Which of the following is an indicator of a leaking refrigerant system?
A) Metal-to-metal contact points B) Higher-than-normal temperature readings C) Visible line bracing D) Front-seated system valves