Free ASVAB Practice Tests

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Sample Practice Test Questions

General Science

Carbohydrates are found in:

sugars and starches

Carbohydrates are major sources of energy for the body and are found in sugars (fruit, cane sugar, beets) and starches (bread, rice, potatoes, pasta).

Automotive Information

Piston rings are responsible for which of the following?

regulating oil distribution inside the cylinder

Cylinders act as a guide for the pistons that translate the heat energy of combustion into the mechanical energy necessary to move a vehicle. Piston rings seal the piston to the cylinder to contain combustion gases and also regulate the oil distribution between the piston and cylinder wall. A cylinder head closes in the top of the cylinder forming the combustion chamber which is sealed by a head gasket (head). The head provides space for air and fuel intake valves, exhaust valves, and mounts for spark plugs and fuel injectors.

General Science

The gravitational interaction of Earth and the Moon is responsible for which of these?

tides

Tides are caused by the gravitational interaction of Earth and the Moon.

Math Knowledge
9π

The dimensions of this cylinder are height (h) = 9 and radius (r) = 1. What is the volume?

9π

The volume of a cylinder is πr2h:

v = πr2h
v = π(12 x 9)
v = 9π

Electronics Information

The valence shell of n insulator is how full of electrons?

more than half full

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.

Word Knowledge
The sweet cookie was a perfect foil to the sour lemon sorbet.
complement
One that enhances or underscores by contrast.
Math Knowledge

Solve for c:
-5c - 3 = \( \frac{c}{-3} \)

-\(\frac{9}{14}\)

To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.

-5c - 3 = \( \frac{c}{-3} \)
-3 x (-5c - 3) = c
(-3 x -5c) + (-3 x -3) = c
15c + 9 = c
15c + 9 - c = 0
15c - c = -9
14c = -9
c = \( \frac{-9}{14} \)
c = -\(\frac{9}{14}\)

Word Knowledge
Obnoxious most nearly means:
objectionable
Highly offensive.
Mechanical Comprehension

Which of the following is not a type of simple machine?

gear

The six types of simple machines are the lever, wheel and axle, pulley, inclined plane, wedge, and screw.

Mechanical Comprehension
If the handles of a wheelbarrow are 1.5 ft. from the wheel axle, how many pounds of force must you exert to lift the handles if it's carrying a 130 lbs. load concentrated at a point 0.5 ft. from the axle?
43.3
This problem describes a second-class lever and, for a second class lever, the effort force multiplied by the effort distance equals the resistance force multipied by the resistance distance: Fede = Frdr. In this problem we're looking for effort force:
\( F_e = \frac{F_r d_r}{d_e} \)
\( F_e = \frac{130 \times 0.5}{1.5} \)
\( F_e = \frac{65.0}{1.5} \)
\( F_e = 43.3 \)