ASVAB Mechanical Comprehension practice

If the green box is 54 ft. from the fulcrum and a certain force applied 6 ft. from the fulcrum at the blue arrow balances the lever, what is the mechanical advantage? A) 2.25 B) 36 C) 9 D) 18

C) 9

Which of the following is not a modulus of elasticity? A) Stretch modulus B) Bulk modulus C) Stress modulus D) Shear modulus

C) Stress modulus

What is the efficiency of a machine that has a work input of 50 ft. lb. and a work output of 37.5 ft. lb. ? A) 0.13% B) 13.33% C) 750% D) 75%

D) 75%

What's the first gear in a gear train called?

Driver Gear

What type of load creates different stresses at different locations on a structure? A) Nonuniformly distributed load B) Dynamic load C) Concentrated load D) Static uniformly distributed load

A) Nonuniformly distributed load

Which of the following is not a type of structural load? A) Rain load B) Live load C) Dead load D) Wind load

A) rain load

What type of load varies with time or affects a structure that experiences a high degree of movement? A) Static uniformly distributed load B) Dynamic load C) Impact load D) Nonuniformly distributed load

B) Dynamic load

Velocity is:

Speed in a particular direction