Using the example values WB = 90, GT = 98, DB = 94, which term contributes 9.4 to the WBGT total?

Using the example values WB = 90, GT = 98, DB = 94, which term contributes 9.4 to the WBGT total?

• A. 0.1DB
• B. 0.7WB
• C. 0.2GT
• D. 0.3GT

Answer: (A)

WBGT is built as a weighted sum of the three temperatures: WB, GT, and DB, using 0.7 for WB, 0.2 for GT, and 0.1 for DB. Plugging in the given values: 0.7 × 90 = 63, 0.2 × 98 = 19.6, and 0.1 × 94 = 9.4. The 9.4 contribution comes from the dry-bulb term, since 0.1 × 94 equals 9.4. The other terms contribute 63 and 19.6 (and the alternative 0.3GT would give 29.4), which do not amount to 9.4, so the correct contributor is the 0.1DB term.

WBGT is built as a weighted sum of the three temperatures: WB, GT, and DB, using 0.7 for WB, 0.2 for GT, and 0.1 for DB. Plugging in the given values: 0.7 × 90 = 63, 0.2 × 98 = 19.6, and 0.1 × 94 = 9.4. The 9.4 contribution comes from the dry-bulb term, since 0.1 × 94 equals 9.4. The other terms contribute 63 and 19.6 (and the alternative 0.3GT would give 29.4), which do not amount to 9.4, so the correct contributor is the 0.1DB term.