EEI Tech Trainer Flashcards

On a graphic arithmetic chart, a line rises steeply between two points. What does this steep slope indicate?

Answer: A rapid rate of change between those values

A steeper slope on a graph represents a faster rate of change between the plotted points.

Two gears mesh together. The driver gear has 20 teeth and the driven gear has 40 teeth. If the driver turns at 100 RPM, how fast does the driven gear turn?

Answer: 50 RPM

A larger driven gear turns slower in proportion to the tooth ratio, so 100 × (20/40) = 50 RPM.

In a series electrical circuit, what happens to the total resistance as more resistors are added?

Answer: It increases

Resistances in series add together, so total resistance increases with each added resistor.

A worker reads a procedure stating to 'de-energize and verify zero voltage before contact.' What is the primary purpose of this step?

Answer: To ensure worker safety from electrical shock

Verifying zero voltage confirms the circuit is safe to touch, preventing electrical shock.

If a pulley system uses two supporting rope segments to lift a load, how does the effort needed compare to lifting it directly?

Answer: About half the effort

A two-segment pulley provides a mechanical advantage of about two, halving the required effort.

A tank holds 240 gallons and drains at 8 gallons per minute. How long until it is empty?

Answer: 30 minutes

240 gallons divided by 8 gallons per minute equals 30 minutes.

When reading a table of values, the best practice for finding a specific entry is to:

Answer: Match the correct row and column intersection

The accurate value is found where the correct row and column intersect.