Mechanical Aptitude Mechanical Aptitude Ultimate 5

Question 1

Which class of fit describes two mating parts where the shaft is always smaller than the hole, guaranteeing clearance for easy assembly?

Accepted Answer

Clearance fit

Answer

A clearance fit ensures the shaft is always smaller than the hole across all tolerance conditions, allowing easy sliding or rotation.

Question 2

What does a manometer measure?

Accepted Answer

Fluid pressure by the height of a liquid column

Answer

A manometer measures pressure by balancing it against the weight of a liquid column, with height proportional to pressure.

Question 3

A ramp (inclined plane) is 10 feet long and 2 feet high. What is the mechanical advantage?

Accepted Answer

5

Answer

Mechanical advantage of an inclined plane = length / height = 10/2 = 5, meaning you apply 1/5 the force over 5× the distance.

Question 4

Which property of a material describes its ability to be drawn into wire without breaking?

Accepted Answer

Ductility

Answer

Ductility is the ability to deform under tensile stress without fracturing, which is required to draw a material into wire.

Question 5

In a planetary gear system, if the ring gear is fixed and the sun gear is the input, which component is the output?

Accepted Answer

Planet carrier

Answer

With the ring gear held stationary and the sun gear driven, the planet gears walk around inside the ring gear, carrying their carrier as the output.

Mechanical Aptitude Test Practice Test