EIAT and NEIEP Test EIAT Mechanical 4

Question 1

A compound gear train has a first pair with a 2:1 ratio and a second pair with a 4:1 ratio. What is the overall ratio?

Accepted Answer

8:1

Answer

In a compound gear train, multiply the individual ratios: 2 × 4 = 8:1 overall.

Question 2

Which material property describes a material's ability to return to its original shape after a load is removed?

Accepted Answer

Elasticity

Answer

Elasticity is the ability of a material to recover its original shape and size after deforming stress is removed.

Question 3

A centrifugal pump impeller spins faster. What happens to the fluid pressure it produces?

Accepted Answer

Pressure increases

Answer

Higher impeller speed imparts more kinetic energy to the fluid, which converts to greater pressure at the pump outlet.

Question 4

When two shafts must transmit power at a slight angle to each other, which coupling is used?

Accepted Answer

Universal joint (U-joint)

Answer

A universal joint allows power transmission between shafts that are not perfectly aligned or are at an angle to each other.

Question 5

A container holds oil (density 0.8) and water (density 1.0). Where does the oil settle?

Accepted Answer

At the top

Answer

Fluids with lower density float on fluids with higher density, so oil settles above water.

EIAT and NEIEP Test Practice Test