NOCTI - Welding

Order the following fractions from smallest to largest:

9/5      7/8      1/4      4/3

• 4/3, ¼, 9/5, 7/8

• 7/8, 9/5, ¼, 4/3

• ¼, ⁷/₈, ⁴/₃, ⁹/₅

What is the name of the straight line shown on the circle?

• Circumference

• Pi (π)

• Diameter

• Radius

Given the formula A = πr²: find the area of the circle (use 3.14 for pi)

• 12.57 square inches

• 3.14 square inches

• 50.24 square inches

Convert 3/8 to a decimal

• 0.25

• 0.15

• 0.375

• 0.48

7²=

• 49

• 14

• 28

• 1/7

A gear with 40 teeth turning 200 rpms is in mesh with a gear with 10 teeth. Find the rpm of the small gear.

• 200 rpm

• 400 rpm

• 600 rpm

• 800 rpm