ASVAB Mechanical Comprehension Practice Test 603515 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.04
Score	0%	61%

Review

1 What's the mechanical advantage of a wedge that's 3 inches wide and 9 inches long?

83% Answer Correctly

	3
	1
	5
	3.3

Solution

The mechanical advantage (MA) of a wedge is its length divided by its thickness:

MA = \( \frac{l}{t} \) = \( \frac{9 in.}{3 in.} \) = 3

Normal force is generally equal to the __________ of an object.

61% Answer Correctly

	coefficient of friction
	weight
	density
	mass

Solution

Normal force arises on a flat horizontal surface in response to an object's weight pressing it down. Consequently, normal force is generally equal to the object's weight.

Depending on where you apply effort and resistance, the wheel and axle can multiply:

45% Answer Correctly

	speed or power
	power or distance
	force or distance
	force or speed

Solution

If you apply the resistance to the axle and the effort to the wheel, the wheel and axle will multiply force and if you apply the resistance to the wheel and the effort to the axle, it will multiply speed.

The work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. This defines which of the following?

60% Answer Correctly

	work-energy theorem
	Pascal's law
	conservation of mechanical energy
	mechanical advantage

Solution

The work-energy theorem states that the work done by the sum of all forces acting on a particle equals the change in the kinetic energy of the particle. Simply put, work imparts kinetic energy to the matter upon which the work is being done.

The science that deals with motion and the forces that produce motion is called which of the following?

57% Answer Correctly

	aeronautics
	mechanics
	physics
	engineering

Solution

Mechanics deals with motion and the forces that produce motion.