Materials A, B, and C Have R Values of 1 $\degree$

question 25

Multiple Choice

Materials A, B, and C have R values of 1, 4, and 8 ft2- $\degree$ F-hr/Btu, respectively. If the rate of heat transfer through material A alone is 20 Btu/hr, then the rate of heat transfer through the combination of A, B and C is _____.

• A) 1.5
• B) 2.5
• C) 4.0
• D) 7.0
• E) 80 Btu/hr

---

Definitions:

On-The-Job Transfer

The application and implementation of skills and knowledge learned in training directly to one's work tasks and responsibilities.

Experimental Training

Refers to training methods that incorporate experimental learning, where learners actively engage in activities to acquire knowledge through experience.

Armoured Vehicle Units

Military or police units that utilize armored vehicles for combat, reconnaissance, or security purposes.

Driving Accidents

Incidents involving vehicles in motion where there is damage or harm to people, vehicles, or property.