IST Applied Mathematics 2

Question 1

A pipe has a diameter of 6 inches. What is its circumference? (Use π ≈ 3.14)

Accepted Answer

18.84 in

Answer

Circumference = π × diameter = 3.14 × 6 = 18.84 inches.

Question 2

A parts bin contains 120 items. If 15% are defective, how many are defective?

Accepted Answer

18

Answer

15% of 120 = 0.15 × 120 = 18 defective items.

Question 3

Convert 3/8 inch to a decimal.

Accepted Answer

0.375

Answer

Dividing 3 by 8 gives 0.375.

Question 4

A rectangular floor is 20 feet long and 15 feet wide. What is its area?

Accepted Answer

300 sq ft

Answer

Area = length × width = 20 × 15 = 300 square feet.

Question 5

A machine runs at 1,200 RPM. How many full rotations does it complete in 30 seconds?

Accepted Answer

600 rotations

Answer

1,200 RPM ÷ 2 (for 30 seconds) = 600 rotations.

IST - Industrial Skills Test Practice Test