Mechanical Aptitude FREE Mechanical Aptitude Ultimate Question and Answers 2

Question 1

A worker needs to lift a 200-pound load using a single fixed pulley. How much force must the worker apply to the rope to lift the load?

Accepted Answer

200 pounds

Answer

A single fixed pulley changes the direction of force but does not provide a mechanical advantage, so the full 200 pounds must be applied.

Question 2

Which type of gear arrangement is used to transmit motion between two shafts that are perpendicular to each other?

Accepted Answer

Bevel gears

Answer

Bevel gears have conically shaped teeth and are specifically designed to transmit rotational motion between intersecting shafts at 90 degrees.

Question 3

A hydraulic jack has an input piston with an area of 2 square inches and an output piston with an area of 20 square inches. If 10 pounds of force is applied to the input piston, what is the output force?

Accepted Answer

100 pounds

Answer

By Pascal's principle, the output force equals the input force multiplied by the ratio of piston areas: 10 × (20/2) = 100 pounds.

Question 4

When a spring is compressed to half its natural length, what happens to the potential energy stored in the spring compared to compressing it to one-quarter of its natural length?

Accepted Answer

The energy at half compression is less than at one-quarter compression

Answer

Spring potential energy depends on displacement from natural length; compressing to half the natural length involves less displacement than compressing to one-quarter, so less energy is stored.

Question 5

A 150-pound person stands at the center of a 10-foot uniform beam supported at both ends. What is the support force at each end?

Accepted Answer

75 pounds

Answer

When a load is placed at the center of a beam supported at both ends, each support bears exactly half the load: 150/2 = 75 pounds.

Mechanical Aptitude Test Practice Test

Mechanical Aptitude Test Practice Test

Mechanical Aptitude FREE Mechanical Aptitude Ultimate Question and Answers 2