QUESTION: 93

For two gears to mesh properly, they must ______________.

rotate at the same speed
rotate in the same direction
have the same size teeth
have the same number of teeth

Answer(s): C

Explanation:

For two gears to mesh properly, they must have the same size teeth.
Different size gears will, by definition, rotate at different speeds even when their driving axles are moving at the same speed.
Also, interlocking or meshing gears rotate in opposite directions.

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QUESTION: 94

Kinetic energy is ______________.

energy stored in chemicals, such as in a battery.
energy in moving electrons, as in an electric current.
energy in a moving object.
energy that can be released under certain conditions.

Answer(s): C

Explanation:

Kinetic energy is energy in a moving object.
Energy stored in chemicals, such as in a battery, is chemical energy; energy in moving electrons, as in an electric current, is electric energy; and energy that can be released under certain conditions is potential energy.

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QUESTION: 95

The amount that a machine (simple or complex) multiplies your force or effort is called __________.

load distance
mechanical advantage
resistance effect
acceleration

Answer(s): B

Explanation:

The amount that a machine (simple or complex) multiplies your force or effort is called mechanical advantage. Load distance is how far the load moves when force is applied, and acceleration is the change in velocity or speed in a certain direction.

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QUESTION: 96

The mechanical advantage of two meshing gears is calculated by dividing ____________.

the number of teeth on the driving gear by the number of teeth on the driven gear.
the number of teeth on the driven gear by the number of teeth on the driving gear.
the number of teeth on the driving gear by the rotational speed.
the diameter of the driven gear by the number of teeth on the driving gear.

Answer(s): B

Explanation:

The mechanical advantage of two meshing gears is calculated by dividing the number of teeth on the driven gear by the number of teeth on the driving gear.

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Free ASVAB Section 3: Mechanical Comprehension Exam Braindumps (page: 24)

QUESTION: 93

Explanation:

QUESTION: 94

Explanation:

QUESTION: 95

Explanation:

QUESTION: 96

Explanation: