EEI Tech Spatial Ability Flashcards

Looking at a schematic, a switch is shown as an open gap in a circuit line. What does this symbol represent?

Answer: An open (off) switch

An open gap in a circuit line on a schematic represents an open (off) switch.

If a bolt viewed from the front shows a hexagonal head, what shape would the head appear if viewed from the end (top)?

Answer: Hexagon

The bolt head is hexagonal, so looking directly down the shaft still shows the hexagonal shape.

On a wiring diagram, two parallel horizontal lines represent:

Answer: A battery or capacitor

Two parallel lines is the standard schematic symbol for a battery or capacitor.

A flat piece of sheet metal is bent 90° along its center. Viewed from the side, what shape does it form?

Answer: L-shape

A single 90° bend along the center creates an L-shaped profile.

A pulley system has a 10-inch drive pulley connected by belt to a 5-inch driven pulley. If the drive pulley turns at 200 RPM, how fast does the driven pulley turn?

Answer: 400 RPM

Speed ratio = drive diameter / driven diameter = 10/5 = 2; so 200 × 2 = 400 RPM.

A cylindrical pipe is cut at a 45° angle. What shape is the resulting cross-section?

Answer: Ellipse (oval)

Cutting a cylinder at an angle produces an elliptical (oval) cross-section.