ASVAB-SECTION-3 Online Practice Questions and Answers

For Gear A and Gear B to mesh properly in the figure above __________.

A. They must be the same size.

B. They must turn at different rates.

C. They must both turn in the same direction.

D. Their teeth must be of equal size.

A screw consists of a single continuous spiral wrapped around a __________.

A. piston

B. cylinder

C. helix

D. square

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

There are three beams that are each 10 feet long and all of the same size. One is made of wood, another of steel, and the third of concrete.

If identical loads are applied to these three beams, which of the following will occur?

A. The steel beam will deflect less than the wood beam.

B. The wood beam will deflect less than the concrete beam.

C. The wood beam will deflect less than the steel beam.

D. The concrete beam will deflect more than the other two.

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.

Which of the following materials serves as a conductor?

A. Metal

B. Wood

C. Acrylic

D. Paper

Water flows into a container at a rate of 140 gallons per minute. The container has a small opening at the bottom that drains water at a rate of 1 gallon per second.

How long will it take to fill the container to 240 gallons?

A. 2 min

B. 3 min

C. 4 min D. Not enough information

What is the mechanical advantage of this pulley system?

A. 6

B. 4

C. 3

D. 2

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

What weight (X) is needed to balance the two loads shown in the figure below?

A. 15 lbs

B. 10 lbs

C. 5 lbs

D. 7.5 lbs