FireTEAM Test FireTEAM Mechanical Aptitude 4

Question 1

A fire engine pump is rated at 1,000 GPM at 150 PSI. If a nozzle reduces the flow to 500 GPM, what generally happens to the residual pump pressure?

Accepted Answer

It increases

Answer

When flow demand decreases, the pump pressure rises because the pump is doing the same work against less resistance.

Question 2

Which property of a material describes its ability to return to its original shape after a deforming force is removed?

Accepted Answer

Elasticity

Answer

Elasticity is the property that allows a material to recover its original shape after stress is removed.

Question 3

A vehicle jack uses a screw mechanism with a pitch of 0.25 inches (advances 0.25 in per full turn). If the handle is 10 inches long, what is the mechanical advantage?

Accepted Answer

251

Answer

MA of a screw = circumference of handle circle ÷ pitch = (2π × 10) ÷ 0.25 ≈ 251.

Question 4

A firefighter notices a valve stem is leaking at its packing nut. What is the most likely immediate fix?

Accepted Answer

Tighten the packing nut slightly

Answer

Slightly tightening the packing nut compresses the packing material, stopping minor stem leaks.

Question 5

Two objects are dropped from the same height: a 5-pound steel ball and a 1-pound rubber ball (ignoring air resistance). Which hits the ground first?

Accepted Answer

They hit at the same time

Answer

Gravity accelerates all objects equally regardless of mass, so both hit the ground simultaneously.

FireTEAM Practice Test

FireTEAM Practice Test

FireTEAM Test FireTEAM Mechanical Aptitude 4