Apprenticeship Exam Mechanical Aptitude and Principles 2

Question 1

When two gears of equal size and equal tooth count are meshed together, the driven gear will:

Accepted Answer

Rotate at the same speed as the drive gear

Answer

Rotate faster than the drive gear

Answer

Rotate slower than the drive gear

Answer

Not rotate until pressure builds up

Question 2

A compression spring has a spring constant of 50 lbs/inch and is compressed 2 inches from its natural length. What force is required?

Accepted Answer

100 lbs

Answer

50 lbs

Answer

150 lbs

Answer

400 lbs

Question 3

Torque is best defined as:

Accepted Answer

A rotational force that causes or tends to cause rotation about an axis

Answer

The speed of a rotating shaft measured in RPM

Answer

The weight of a component measured during motion

Answer

The friction generated between two rotating surfaces

Question 4

If you double the pressure in a pneumatic system while keeping the piston area the same, the output force will:

Accepted Answer

Double

Answer

Stay the same

Answer

Be cut in half

Answer

Quadruple

Question 5

Which type of friction acts between two surfaces that are moving (sliding) against each other?

Accepted Answer

Kinetic friction

Answer

Static friction

Answer

Rolling friction

Answer

Fluid friction

Question 6

A belt drive has a drive pulley of 4-inch diameter running at 900 RPM and a driven pulley of 12-inch diameter. What is the speed of the driven pulley?

Accepted Answer

300 RPM

Answer

100 RPM

Answer

600 RPM

Answer

2700 RPM

Question 7

The center of gravity of an object is best described as:

Accepted Answer

The point where the object's weight is balanced equally in all directions

Answer

Always at the exact geometric center of the object

Answer

The heaviest single point within the object

Answer

Always located on the outer surface of the object