Why is motor impeller rotation so critical for 3-phase centrifugal pumps? Select the best answer Wastewater could backwash into the potable water supply Impellers spinning in the wrong direction will create a vacuum in the line Pumping efficiency plummets when the impeller spins in the wrong direction It can indicate if the power is in the wrong phase

Describe about geogrids.

9 What are the two types of digital images? (multiple choios questions) A. Grid format B. Square format C. Map D. Vector style 4

Conceptually what is a "construction overlay on the design model"? When the contractor edits design information within the model When the contractor creates their own replica of the design model When the contractor uses the design model as a base for a construction model When the contractor pushes data down to the design model 49°F Sunny