EIAT and NEIEP Test EIAT Mechanical 2

Question 1

A gear with 40 teeth meshes with a gear with 10 teeth. If the smaller gear rotates at 200 RPM, what is the speed of the larger gear?

Accepted Answer

50 RPM

Answer

Gear ratio = 10/40 = 1/4, so the larger gear turns at 200 × (10/40) = 50 RPM.

Question 2

Which type of pulley system provides a mechanical advantage of 3?

Accepted Answer

A block and tackle with 3 rope segments supporting the load

Answer

Mechanical advantage in a block-and-tackle equals the number of rope segments supporting the moving block.

Question 3

A wrench applies 50 lb of force at 12 inches from the bolt center. What is the torque applied?

Accepted Answer

600 lb-in

Answer

Torque = Force × Distance = 50 lb × 12 in = 600 lb-in.

Question 4

An inclined plane is 10 feet long and rises 2 feet. A 500 lb crate is pushed up the ramp. Approximately how much force is required (ignoring friction)?

Accepted Answer

100 lb

Answer

Mechanical advantage = length/height = 10/2 = 5, so force = 500/5 = 100 lb.

Question 5

Two gears rotate in the same direction when:

Accepted Answer

An even number of gears links them in a gear train

Answer

Each meshing pair reverses direction; an even number of intermediate gears results in the output rotating the same direction as the input.

EIAT and NEIEP Test Practice Test

EIAT and NEIEP Test Practice Test

EIAT and NEIEP Test EIAT Mechanical 2