ASVAB Mechanical Comprehension Practice Test 229199 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.13
Score	0%	63%

Review

Which of the following will increase the mechanical advantage of this inclined plane?

59% Answer Correctly

	shorten the ramp
	lower the force acting at the blue arrow
	increase the force acting at the blue arrow
	lengthen the ramp

Solution

The mechanical advantage (MA) of an inclined plane is the effort distance divided by the resistance distance. In order to increase mechanical advantage, this ratio must increase which means making the effort distance longer and this can be accomplished by lengthening the length of the ramp.

Which of the following is not a type of bridge?

74% Answer Correctly

	cable
	arch
	truss
	block

Solution

The six basic bridge forms are beam, truss, arch, cantilever, cable, and suspension.

According to Boyle's law, for a fixed amount of gas kept at a fixed temperature, which of the following are inversely proportional?

63% Answer Correctly

	volume, mass
	pressure, volume
	density, volume
	pressure, density

Solution

Boyle's law states that "for a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional".

Force of friction due to kinetic friction is __________ the force of friction due to static friction.

40% Answer Correctly

	lower than
	higher than
	opposite
	the same as

Solution

The formula for force of friction (F_f) is the same whether kinetic or static friction applies: F_{f =}μF_N. To distinguish between kinetic and static friction, μ_k and μ_s are often used in place of μ.

5 If input effort is 600 ft⋅lb, what output effort will be produced by a machine with a mechanical advantage of 4?

79% Answer Correctly

	600ft⋅lb
	9600ft⋅lb
	1200ft⋅lb
	2400 ft⋅lb

Solution

Mechanical advantage is the ratio of output force to input force and tells us by how many times a machine multiplies input effort. So, a machine with a mechanical advantage of 4 will multiply an input effort of 600 ft⋅lb by 4 to produce an output effort of 2400 ft⋅lb.