EEI TECH EEI Tech Reasoning 3

Question 1

Water flows through a pipe that narrows in the middle. As the pipe narrows, the water's speed will:

Accepted Answer

Increase

Answer

Fluid speed increases when it flows through a narrower section to maintain flow rate.

Question 2

A worker uses a wrench to loosen a bolt. Using a longer wrench handle will:

Accepted Answer

Require less force

Answer

A longer handle increases leverage, so less force is needed to produce the same torque.

Question 3

Three resistors of 2 ohms each are connected in series. What is the total resistance?

Accepted Answer

6 ohms

Answer

Series resistances add together: 2 + 2 + 2 = 6 ohms.

Question 4

Which of these best completes the analogy: Voltage is to electricity as ____ is to water flow.

Accepted Answer

Pressure

Answer

Voltage pushes electric current much like pressure pushes water through a pipe.

Question 5

A 100-pound load is lifted using a pulley system with a mechanical advantage of 4. What input force is required (ignoring friction)?

Accepted Answer

25 pounds

Answer

Input force = Load ÷ Mechanical Advantage = 100 ÷ 4 = 25 pounds.

EEI TECH Test Practice Test