Free ASVAB Practice Tests

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Sample Practice Test Questions

Math Knowledge

A cylinder with a radius (r) and a height (h) has a surface area of:

2(π r2) + 2π rh

A cylinder is a solid figure with straight parallel sides and a circular or oval cross section with a radius (r) and a height (h). The volume of a cylinder is π r2h and the surface area is 2(π r2) + 2π rh.

General Science

Which of the following is the narrowest classification of life?

species

The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.

General Science

The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?

potential

Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.

Word Knowledge
Advantageous most nearly means:
favorable
Giving an advantage.
Word Knowledge
Civility most nearly means:
courtesy
Politeness.
Automotive Information

The vehicle's computer system gets data from:

sensors

Sensors provide the data necessary for the vehicle's computer to make decisions and monitor everything from simple vehicle information like tire pressure to complexities like the chemical content of an engine's exhaust.

Automotive Information

The fuel injector is regulated by the __________ which is the main computer that controls engine and transmission functions.

powertrain control module

The fuel injector sprays fuel into the air stream that's being fed into the cylinder head via the intake valve. The timing and amount of fuel are regulated by the powertrain control module (PCM) which is the main computer that controls engine and transmission functions.

Automotive Information

Opposed cylinder designs feature two rows of cylinders that are placed at what angle to each other?

180°

Opposed cylinder designs place cylinders flat in two rows 180° opposite each other with a single crankshaft running between them.

Automotive Information

Which of the following is not a function of antifreeze?

lubricates the cooling system

Modern car engines are cooled by liquid which circulates through the engine block and cylinder heads absorbing excess heat. This liquid is made up of half water and half antifreeze (commonly, ethylene glycol) which both keeps the water from freezing at low temperatures and raises its boiling point making heat transfer more efficient.

Automotive Information

What is the pimary advantage of using power brakes on a vehicle?

provides higher hydraulic pressure in the braking system

Power brakes multiply the force a driver applies to the brake pedal using a vacuum booster connected to the engine intake manifold. This provides for much higher hydraulic pressure in the braking system than could be generated by the driver alone. Antilock brakes (ABS) use speed sensors and adjust the brake pressure at each wheel to prevent skidding and allow the driver more steering control in slippery conditions.