EEI Tech Spatial Ability Flashcards

On an electrical panel diagram, the bus bar is shown as a thick horizontal line. What does the bus bar do?

Answer: Distributes power to multiple circuits

A bus bar is a conductor that distributes electrical power to multiple branch circuits in a panel.

A block has six faces: top, bottom, front, back, left, and right. If you remove the top and bottom, how many faces remain?

Answer: 4

6 total faces − 2 (top and bottom) = 4 remaining faces.

Two wires are shown crossing on a schematic with a small dot at the intersection. The dot indicates:

Answer: The wires are electrically connected

A dot at a wire intersection on a schematic indicates the wires are electrically connected (a junction).

A triangular wedge is viewed from directly above. What shape do you see?

Answer: Triangle

Viewing a triangular wedge from directly above reveals its triangular top face.

A gear with 20 teeth meshes with a gear of 40 teeth. If the small gear makes 4 revolutions, how many does the large gear make?

Answer: 2

Gear ratio = 20/40 = 0.5; so the large gear makes 4 × 0.5 = 2 revolutions.

On a floor plan, a door is shown as a quarter-circle arc attached to a rectangle. The arc represents:

Answer: The swing path of the door

The quarter-circle arc on a floor plan shows the path swept by the door as it opens.