Free ASVAB Practice Tests

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Sample Practice Test Questions

Automotive Information

The catalytic converter output consists primarily of:

water and carbon dioxide

The catalytic converter converts pollutants in exhaust gas into less pollutant substances like carbon dioxide and water.

Automotive Information

Gases from combustion are pushed out through the exhaust valve as the piston travels up the cylinder to top dead center. This describes which engine stroke?

exhaust

During the exhaust stroke, just before the piston reaches bottom dead center the exhaust valve opens. The resulting gases from combustion are then pushed out through the exhaust valve as the piston travels up the cylinder to top dead center, completing stroke four of the four-stroke piston cycle.

Word Knowledge
Eulogy most nearly means:
homage
Speech or writing in praise of deceased.
Word Knowledge
The repentant Dana admitted to cheating on the test.
contrite
Feeling regret.
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

Which of the following is not a type of bridge?

block

The six basic bridge forms are beam, truss, arch, cantilever, cable, and suspension.

Electronics Information
fuse

This circuit component symbol represents a(n):

fuse

Fuses are thin wires that melt when the current in a circuit exceeds a preset amount. They help prevent short circuits from damaging circuit components when an unusually large current is applied to the circuit, either through component failure or spikes in applied voltage.

Electronics Information

In an electronic circuit, a thermocouple can be used to:

open or close a circuit at a designated temperature

A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.

Word Knowledge
Franklin hoped to defeat his adversary in the afternoon's tennis match.
opponent
One who opposes or resists.
Word Knowledge
Unscrupulous most nearly means:
corrupt
Lacking principles.