____________________ forces motors to start or stop in a predetermined order.
Fill in the blank(s) with the appropriate word(s).
Sequence control
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____________________ is bonding with metals and alloys that melt at temperatures below 804°F
Fill in the blank(s) with the appropriate word(s).
When running passes (other than the root) on open-root V-groove pipe welds in the 2G position, use stringer
beads and a slight circular or side-to-side motion to ensure fusion at the _____. a. face of the weld bead b. toes of the weld bead c. root of the weld bead d. leg of the weld bead
To make combustion efficiency tests, a hole must be made ____.
A. in the flue pipe after the draft control B. in the flue pipe before the draft control C. over the fire at the observation door D. under the draft hood
The leadscrew system converts ____________________ (linear, rotary) to ____________________ (linear, rotary) motion.
Fill in the blank(s) with the appropriate word(s).