Free ASVAB Practice Tests

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Sample Practice Test Questions

General Science

In fermentation, what replaces oxygen in anaerobic respiration?

lactic acid or alcohol

If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.

Mechanical Comprehension

What type of load doesn't create specific stress points or vary with time?

static uniformly distributed load

A concentrated load acts on a relatively small area of a structure, a static uniformly distributed load doesn't create specific stress points or vary with time, a dynamic load varies with time or affects a structure that experiences a high degree of movement, an impact load is sudden and for a relatively short duration and a non-uniformly distributed load creates different stresses at different locations on a structure.

Electronics Information

What type of current flows in only one direction in a circuit?

direct

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Word Knowledge
Rehash most nearly means:
review
To discuss again.
Automotive Information

Which engine component converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components?

crankshaft

The crankshaft converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components.

Word Knowledge
Advantageous most nearly means:
favorable
Giving an advantage.
General Science

An air mass is a large body of air that has which of the following characteristics?

all of these

An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.

Word Knowledge
Comprehensible most nearly means:
intelligle
Understandable.
General Science

Which of these does not contain oxygenated blood?

right atrium

To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.

General Science

Food is mixed with gastric acid and pepsin in the __________ to help break down protein.

stomach

Food is mixed with gastric acid and pepsin in the stomach to help break down protein.