ASVAB-SECTION-3 Online Practice Questions and Answers

Correct Answer: B

You can determine the pressure of all that water by multiplying the volume of the aquarium by the weight of

the water. Volume = lwh. The bottom of the tank is 18 feet long by 12 feet wide by 10 feet high for a total

volume of 2,160 cubic feet (18 × 12 × 10).

A cubic foot of water weighs approximately 62.5 pounds. 2,160 × 62.5 gives an approximate pressure on

the bottom of the tank of about 135,000 pounds over the entire surface area.

The surface area of the bottom of the tank is length × width.

216 inches (18 feet × 12) × 144 inches (12 feet × 12) = 31,104.

Dividing the pressure of 135,000 by the number of square inches of surface area gives an approximate PSI

of 4.

Correct Answer: C

The gauge shows a reading of 21.

Correct Answer: C

The 20-pound cat and the 4-pound board weigh 24 pounds total or, divided by 2, 12 pounds per scale.

Correct Answer: C

A longer handle – a longer lever – allows the hammerhead to reach a higher speed, thereby producing more striking force.

Correct Answer: B

Cranks are used to convert motion in a straight line into motion in a circle, such as in a bicycle's pedals and pistons in an automotive engine.

Correct Answer: D

Buoyancy is the force that makes ships float and helium-filled balloons rise. This means that the force that acts in an upward direction on anything submerged in a liquid or a gas is called buoyancy.

Correct Answer: C

Efficiency is affected by friction. It is a ratio of how much effort went into a job compared to what was produced or outputted. Therefore, work input is more than the work output. Friction accounts for the loss in efficiency.

Correct Answer: C

A set of bearings is typically a set of small metal balls packed in a groove and lubricated with grease or oil. The wheel rubs against one side of each ball, and the axle rubs against the other side. The net effect is that the wheel rolls much more easily.

Correct Answer: A

Correct Answer: C