WorkKeys Applied Technology

Question 1

A drive gear with 20 teeth meshes with a driven gear with 40 teeth. If the drive gear rotates at 60 RPM, what is the speed of the driven gear?

Accepted Answer

30 RPM

Answer

The driven gear speed equals the drive gear speed multiplied by the inverse gear ratio: 60 × (20/40) = 30 RPM.

Question 2

In an electrical circuit, which configuration allows current to flow through multiple separate paths simultaneously?

Accepted Answer

Parallel circuit

Answer

A parallel circuit provides multiple independent paths for current, so electricity can flow through each branch simultaneously.

Question 3

A hydraulic piston has an area of 3 square inches and the system pressure is 400 PSI. What force does the piston exert?

Accepted Answer

1,200 lbs

Answer

Force equals pressure multiplied by area: F = 400 PSI × 3 in² = 1,200 lbs.

Question 4

A lever has a 12-foot effort arm and a 3-foot resistance arm. What is its mechanical advantage?

Accepted Answer

4

Answer

Mechanical advantage of a lever equals the effort arm length divided by the resistance arm length: 12 ÷ 3 = 4.

Question 5

Which material is the best conductor of electricity among the following options?

Accepted Answer

Copper

Answer

Copper has very low electrical resistance and free electrons that move easily, making it an excellent conductor used widely in wiring.

WorkKeys Practice Test