ASVAB Mechanical Comprehension|
Exam REVIEW 2024/2025| Questions and
Answers
**1. What is the purpose of a lever?**
To amplify force and make it easier to lift heavy objects.
**2. In which type of simple machine is a wheel and axle system used?**
To reduce friction and help move objects more easily.
**3. If a gear is larger than another gear, what effect does it have on the smaller gear when they
are meshed together?**
The larger gear will turn the smaller gear at a slower speed but with greater torque.
**4. What does the term "friction" refer to in mechanics?**
The resistance that one surface or object encounters when moving over another.
**5. What is the mechanical advantage of a pulley system?**
It allows you to lift heavier loads with less force.
**6. If a force of 10 N is applied to a lever arm of 2 meters, what is the torque produced if the
force is applied at a right angle to the lever?**
20 Nm (Newton-meters).
1
, **7. In hydraulic systems, what principle allows a small force applied at one point to generate a
larger force at another point?**
Pascal's principle (or Pascal's law).
**8. What type of simple machine is an inclined plane?**
A flat surface that is tilted at an angle to help raise objects.
**9. If you double the radius of a wheel, how does it affect the circumference?**
The circumference also doubles.
**10. In a circuit, what does the term "voltage" refer to?**
The electrical potential difference that drives current through the circuit.
**11. If a car travels at a constant speed of 60 mph for 2 hours, how far has it traveled?**
120 miles.
**12. What is the function of a capacitor in an electrical circuit?**
To store and release electrical energy.
**13. When an object is in free fall, what is the acceleration due to gravity near the Earth's
surface?**
2
Exam REVIEW 2024/2025| Questions and
Answers
**1. What is the purpose of a lever?**
To amplify force and make it easier to lift heavy objects.
**2. In which type of simple machine is a wheel and axle system used?**
To reduce friction and help move objects more easily.
**3. If a gear is larger than another gear, what effect does it have on the smaller gear when they
are meshed together?**
The larger gear will turn the smaller gear at a slower speed but with greater torque.
**4. What does the term "friction" refer to in mechanics?**
The resistance that one surface or object encounters when moving over another.
**5. What is the mechanical advantage of a pulley system?**
It allows you to lift heavier loads with less force.
**6. If a force of 10 N is applied to a lever arm of 2 meters, what is the torque produced if the
force is applied at a right angle to the lever?**
20 Nm (Newton-meters).
1
, **7. In hydraulic systems, what principle allows a small force applied at one point to generate a
larger force at another point?**
Pascal's principle (or Pascal's law).
**8. What type of simple machine is an inclined plane?**
A flat surface that is tilted at an angle to help raise objects.
**9. If you double the radius of a wheel, how does it affect the circumference?**
The circumference also doubles.
**10. In a circuit, what does the term "voltage" refer to?**
The electrical potential difference that drives current through the circuit.
**11. If a car travels at a constant speed of 60 mph for 2 hours, how far has it traveled?**
120 miles.
**12. What is the function of a capacitor in an electrical circuit?**
To store and release electrical energy.
**13. When an object is in free fall, what is the acceleration due to gravity near the Earth's
surface?**
2
