Free ASVAB Practice Tests | ASVAB Test Bank

Word Knowledge

The supple leather coat draped like soft cloth around her shoulders.

pliant

Flexible.

Word Knowledge

Nurture most nearly means:

foster

To further the development of.

Word Knowledge

Gary believed the black foreboding sky was an inauspicious sign.

ominous

Not favorable.

Shop Information

Which of these saws is used with a miter box?

back saw

A miter box utlizes a back saw (a fine toothed saw with a rigid strip of steel opposite its blade edge) to make cuts in wood at a specified angle.

General Science

In the heart, the __________ artery and vein manage blood flow to the lungs.

pulmonary

The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.

Math Knowledge

Solve for y:
y² + 6y - 13 = -y + 5

2 or -9

The first step to solve a quadratic expression that's not set to zero is to solve the equation so that it is set to zero:

y² + 6y - 13 = -y + 5
y² + 6y - 13 - 5 = -y
y² + 6y + y - 18 = 0
y² + 7y - 18 = 0

Next, factor the quadratic equation:

y² + 7y - 18 = 0
(y - 2)(y + 9) = 0

For this expression to be true, the left side of the expression must equal zero. Therefore, either (y - 2) or (y + 9) must equal zero:

If (y - 2) = 0, y must equal 2
If (y + 9) = 0, y must equal -9

So the solution is that y = 2 or -9

Electronics Information

Which of the following is not true about a line drop?

it is addressed by raising current and lowering voltage across the ransmission line

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. A line drop is a decrease in voltage between two points on an electrical transmission line due to resistance in the line. A lower current and higher voltage across the line will help compensate for the line drop.

Mechanical Comprehension

If a 25 lbs. weight is placed 3 ft. from the fulcrum at the blue arrow and the green box is 6 ft. from the fulcrum, how much would the green box have to weigh to balance the lever?

12.5 lbs.

To balance this lever the torques on each side of the fulcrum must be equal. Torque is weight x distance from the fulcrum so the equation for equilibrium is:

R_ad_a = R_bd_b

where a represents the left side of the fulcrum and b the right, R is resistance (weight) and d is the distance from the fulcrum.

Solving for R_a, our missing value, and plugging in our variables yields:

R_a = \( \frac{R_bd_b}{d_a} \) = \( \frac{25 lbs. \times 3 ft.}{6 ft.} \) = \( \frac{75 ft⋅lb}{6 ft.} \) = 12.5 lbs.

General Science

pH is a scale that measures of how basic or acidic a solution is. A solution with a pH of 9 is:

alkaline

An acid is a substance that gives up positively charged hydrogen ions (H⁺) when dissolved in water. A base (alkaline) gives up negatively charged hydroxide ions (OH^-) when dissolved in water. pH is a scale that measures of how basic or acidic a solution is. Numbered from 0 to 14, solutions with a pH of 7 are neutral, less than 7 are acidic, more than 7 are alkaline.

General Science

In taxonomy, domains are the broadest classification of life. How many domains are there?

The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.