ASVAB-SECTION-3 Online Practice Questions and Answers

In the figure above, which angle is braced most solidly?

A. A

B. B

C. C

D. All are braced equally solidly.

If a ramp measures 6 feet in length and 3 feet in height, an object weighing 200 pounds requires how much effort to move using the ramp?

A. 200 pounds

B. 100 pounds

C. 50 pounds

D. 300 pounds

Normally, atmospheric pressure is approximately __________.

A. 14.7 psi

B. 23.2 psi

C. 7.0 psi

D. 10.1 psi

How can a gear system derive the greatest amount of mechanical advantage when a seven-tooth gear drives a ___________?

A. 29-tooth gear

B. 5-toothgear

C. 24-tooth gear

D. 17-tooth gear

Which of the following is not a simple machine?

A. Lever

B. Inclined plane

C. Axe

D. Pulley

The mechanical advantage of two meshing gears is calculated by dividing __________.

A. the number of teeth on the driving gear by the number of teeth on the driven gear.

B. the number of teeth on the driven gear by the number of teeth on the driving gear.

C. the number of teeth on the driving gear by the rotational speed.

D. the diameter of the driven gear by the number of teeth on the driving gear.

The ideal mechanical advantage of a gear is the ratio of the number of teeth in the load gear to the number of teeth in the __________.

A. effort gear

B. loaded gear

C. lifting gear

D. spiral gear

The sprocket on a bicycle is most similar to which of the simple mechanical devices listed below?

A. a gear

B. a spring

C. a lever

D. all of the above

Which is the best description of centrifugal force?

A. the force responsible for the changes made to water during distillation.

B. the response of bodies with inertia to the straight-moving or curved behavior of their container.

C. the force by which bodies are propelled forward.

D. the relationship between two opposing forces.

In the pulley system below, how fast does pulley D rotate, if pulley A rotates at 50 rpm?

A. 100 rpm

B. 50 rpm

C. 200 rpm

D. 64 rpm