GMAW normally uses:
A) DCEP B) DCEN
C) AC D) AC - High Frequency
A
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Why would an engineer decide to use a low temperature hot water system rather than a medium temperature design? Select all that apply.
A) The boilers are more efficient than medium temperature designs. B) Piping doesn't need to be insulated. C) They use smaller piping. D) Pipe expansion is easier to control.
Answer the following statements true (T) or false (F)
1. Suction that pulls wind-driven rain into the air space of a drainage wall takes place on the windward face of a wall. 2. For a pressure -equalized drainage wall to function effectively, the air space must be continuous from floor to floor. 3. In a brick veneer wall assembly, the wind loads are transferred directly from the veneer to the building's structure. 4. A shelf angle must be anchored to the building's structural frame. 5. A lintel angle must be anchored to the building's structural frame.
In FCAW, atmospheric shielding is ____.
A. provided solely by flux sealed within the tubular electrode B. provided completely through a nozzle in the same way as GMAW C. not necessary D. provided by flux sealed within the tubular electrode, but extra shielding may be supplied through a nozzle as in GMAW
What frequencies and modulation techniques does LoRa use?
What will be an ideal response?