FREE Mechanical Aptitude Knowledge Question and Answers Flashcards
6 cards from real MECHANICAL APTITUDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 FREE Mechanical Aptitude Knowledge Question and Answers flashcards as text
A class 2 lever has the load positioned between the fulcrum and the effort. Which of the following is an example?
Answer: A wheelbarrow
A wheelbarrow is a class 2 lever where the load sits between the fulcrum (wheel) and the effort (handles).
Two meshing gears have 20 and 60 teeth respectively. If the smaller gear rotates at 300 RPM, what is the speed of the larger gear?
Answer: 100 RPM
The gear ratio is 60/20 = 3, so the larger gear turns at 300/3 = 100 RPM.
Which material property describes its ability to return to its original shape after a load is removed?
Answer: Elasticity
Elasticity is the property that allows a material to deform under stress and return to its original shape once the stress is removed.
A 150-pound person stands exactly in the center of a 10-foot beam supported at both ends. What is the reaction force at each support?
Answer: 75 pounds
When a load is centered on a simply supported beam, each support carries exactly half the load: 150/2 = 75 pounds.
What happens to the pressure in a closed container of gas if the temperature is doubled while the volume remains constant?
Answer: Pressure doubles
According to Gay-Lussac's Law, at constant volume, pressure is directly proportional to absolute temperature, so doubling temperature doubles pressure.
An inclined plane is 12 feet long and raises a load 3 feet high. What is its mechanical advantage?
Answer: 4
The mechanical advantage of an inclined plane equals its length divided by its height: 12/3 = 4.