ASVAB MECHANICAL COMPREHENSION EXAM QUESTIONS

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ASVAB MECHANICAL COMPREHENSION EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -68 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Energy is?

Answer:

The capacity to do work Question 2: What measures how much force is applied to an object in order to rotate it?

Answer:

Torque Is how much force is acting on an object, causing it to rotate

Question 3: What is the point at which at the lever pivots?

Answer:

The fulcrum Where the lever pivots Question 4: Which of the following situations requires overcoming the least amount of kinetic friction?

Answer:

Pushing an empty refrigerator box down an icy path

Question 5: In terms of force, what makes hydraulic jacks so useful?

Answer:

The liquid does not compress very much Question 6: If a large gear drives a smaller gear, which of the following will not occur?

Answer:

A change in gear ratio

Question 7: When a machine compounds the force you use, it gives you a(n)?

Answer:

Mechanical Advantage Easy to complete task Question 8: The radius of the axle is 5" , the radius of the wheel is 8" and the blue box weighs 80 lbs. What is the effort force necessary to balance the load?

Answer:

50 lbs Question 9: If you have a gear train with two gear, one with 36 teeth and the other with 4 teeth, how many revolution does the second gear make for each revolution of the first gear?

Answer:

9

Question 10: The measure of the quantity of matter in an object is its?

Answer:

Mass Question 11: If the green box weighs 35lb. and is 3 ft. from the fulcrum, how much force would need to be applied at the blue arrow to balance the lever if the arrow's distance from the fulcrum is 8 ft.?

Answer:

13.1 lb

Question 12: How is a wedge different from an inclined plane?

Answer:

A wedge is used in motion.

Ex: Knife sliding through a carrot

Question 13: When two or more forces act to balance each other out, the condition is called

Answer:

equilibrium Question 14: Which of the following wedges generates the greatest amount of force?

Answer:

11" long and 4" high Question 15: Sam can do 500 ft. lb of work in 4 minutes and 30 seconds. what would Sam have to do to increase his power output?

Answer:

Do the work in 4 minutes To increase power increase the rate of work Question 16: Not including friction, a stationary single pulley gives a mechanical advantage of

Answer:

1

Question 17: What is the scientific notation for 832,000?

Answer:

8.32x100^5 Question 18: The moisture that forms on the side of a window on a cold day is called_____

Answer:

Condensation Question 19: A 180 pound person dives off of a 30 foot cliff. What is their velocity as they enter the water?

Answer:

13 m/s

Question 20: Which of the following is not a unit of power?

Answer:

Newton Unit of force

Question 21: Which of the following is the best example of an inclined plane?

Answer:

A slide

Question 22: Gears are used to?

Answer:

Change rotational speed Question 23: What is the potential energy of 4 lb. book held 50 feet in the air?

Answer:

268 J 1.8 kg 15.2 9.8 m/s = 268 J

Question 24: which of the following is an example of potential energy?

Answer:

A slinky at the top of stairs potential energy is energy that can be converted to movement.Question 25: ________is the reason it is harder to stop a baseball flying at 100 MPH than it is to stop a baseball flying at 50 MPH.

Answer:

Momentum Momentum = mass X Velocity

Question 26: Which of the following is the basis for Pascal's Law?

Answer:

The amplification of force in a hydraulic system.The third principle of hydraulics is the basis for Pascal's Law and states that when pressure is applied to a fluid, the pressure is transmitted evenly throughout