NAFI TEST 2025. COMPLETE QUESTIONS AND ANSWERS (ALREADY PASSED TEST).

NAFI TEST 2025. COMPLETE QUESTIONS AND ANSWERS (ALREADY PASSED TEST). The basic methodology of the fire investigation should rely on the use of a and attention to all relevant details. a. systematic approach b. approximation approach c. methodology approach d. general approach - - Answer - a. systematic approach With few exceptions, the proper methodolgy for a fire or explosion investigation is to first then investigate the cause, circumstances, conditions, or agencies that brought the ignition source, fuel, and oxidant together. a. determine responsibility b. determine and establish origin(s) c. determine if it is a criminal action d. all of the above - - Answer - b. determine and establish origin(s) The process of determining the origin, cause, development, and responsibility as well as the failure analysis of a fire or explosion is the definition of . a. fire investigation b. fire scene reconstruction c. fire evaluation d. fire analysis -- Answer - d. fire analysis The process of determining the origin, cause, and responsibility for a fire or explosion is . a. fire analysis b. fire investigation c. fire scene survey d. fire evaluation - - Answer - b. fire investigation recognition and formulation of a problem, the collection of data through observation and experiment, and the formulation and testing of a hypothesis. a. scientific method b. scientific examination c. scientific survey d. scientific theory - - Answer - a. scientific method are the visible or measurable physical effects that remain after a fire. These include thermal effects on materials, such as charring, oxidation, consumption of combustibles, smoke and soot deposits, distortion, melting, color changes, changes in character of materials, structural collapse, and other effects. a. Fire arrows b. Fire pointers c. Fire patterns d. Flammable patterns - - Answer - c. Fire patterns Distortion, breakage, deterioration, or other fault in an item, component, system, assembly, or structure that results in unsatisfactory performance of the function for which it was designed is called . a. broken b. distorted c. failure d. faulty - - Answer - c. failure Vehicle fire inspections may present many other situations that pose safety hazards to the investigator. These can include: a. fuel leaks b. expelled lubricants c. electrical energy stored in the battery d. all of the above - - Answer - d. all of the above The burn or damage patterns remaining on the body panels and in the interior of the a. origin of the fire b. potential ignition sources c. fuel loads d. all of the above - - Answer - d. all of the above A wide variety of materials and substances may serve as the first materials ignited in motor vehicle fires. These include engine fuels; transmission, power steering, and brake fluids; coolants; lubricants; and the vehicle interior materials or cargo. Once a fire is started, any of these materials may contribute as a secondary fuel, affecting the fire growth rate and the ultimate damage sustained. a. True b. False - - Answer - a. True Solid fuels are less common than liquids and gasses as the first materials ignited in motor vehicle fires. The exception would be scenarios where overloaded wiring or smoking materials are possible ignition sources or where the vehicle is subject to an exposure fire. a. True b. False - - Answer - a. True In most instances, the sources of ignition energy in motor vehicle fires are the same as those associated with structural fires, arcs, overloaded wiring, open flames, and smoking materials. There are, however, some unique sources that should be