RECF PRE-ENGINEERING EXAM QUESTIONS WELL ANSWERED LATEST UPDATE 2026

RECF PRE-ENGINEERING EXAM QUESTIONS WELL ANSWERED LATEST UPDATE 2026 Apollo - Answers Apollo-Apollo was the NASA program that resulted in American astronauts' making a total of 11 spaceflights and walking on the moon. The first four flights tested the equipment used in the Apollo Program. Six of the other seven flights landed on the moon (Apollos 11, 12, 14, 15, 16, 17). Apollos 7 and 9 were Earth orbiting missions to test the command and Lunar Modules, and did not return lunar data. The first Apollo flight happened in 1968. Gear ratio calculations - Answers Input Gear/Output Gear Steps in the engineering design process - Answers Identify Problems Design Parameters Research Design/Build Test/Redesign Final Product P=VI=V^2/R - Answers Formula for Power Convert Btu to KW - Answers 1 BTU/hr=0. kW P(kW)=P(BTU/hr)/3412.142 Mercury - Answers Mercury-Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963. An early highlight of the Space Race, its goal was to put a man into Earth orbit and return him safely, ideally before the Soviet Union. How are Bits related to Nibbles? - Answers Digital Storage 1 Bit=0.25 Nibble 4 Bits=1 Nibble Binary Code - Answers Binary Code-a coding system using the binary digits 0 and 1 to represent a letter, digit, or other character in a computer or other electronic device. Atlas Rockets - Answers Atlas Rockets-Atlas V. Atlas is a family of American missiles and space launch vehicles. The original Atlas missile was designed in the late 1950s and produced by the Convair Division of General Dynamics, to be used as an intercontinental ballistic missile (ICBM). Gemini - Answers Gemini-Project Gemini was NASA's second human spaceflight program. Conducted between projects Mercury and Apollo, Gemini started in 1961 and concluded in 1966. The Gemini spacecraft carried a two-astronaut crew. Black, White, Yellow or Combination of Black and White or Yellow - Answers Boundaries-Labels and containers for blood and infectious waste. (Warning labels must be fluorescent orange or orange-red with the biosafety symbol in a contrasting color.) Blue - Answers Information-Signs and bulletin boards. Specific railroad warnings against starting, using or moving equipment being repaired. Green - Answers Safety-Location of first aid equipment. Location of safety equipment, respirators, safety showers, etc. Fluorescent Orange, Orange-Red - Answers Bio safety-Labels and containers for blood and infectious waste. (Warning labels must be fluorescent orange or orange-red with the biosafety symbol in a contrasting color.) Red - Answers Danger-Safety cans and signs. Stop-Emergency stop bar or button on machinery. Identification of fire equipment. Orange - Answers Warning-Parts of machinery or energized equipment that may cut, crush or otherwise injure. Inside of transmission guards for pulleys, gears, etc. Yellow - Answers Caution-Tripping, falling and striking hazards. "Flammable, Keep Fire Away" labels on cabinets. Safety cans and containers for explosives, corrosives or unstable materials. Magenta or Purple on Yellow - Answers Radiation Caution-X-ray, alpha, beta, gamma, neutron and proton radiation. CAD Systems - Answers CAD or (computer-aided design) and drafting (CADD), is the use of computer technology for design and design documentation. Thermos Laws 1 - Answers The first law, also known as Law of Conservation of Energy, states that energy cannot be created or destroyed in an isolated system. Thermos Laws 2 - Answers The second law of thermodynamics states that the entropy of any isolated system always increases. Thermos Laws 3 - Answers The third law of thermodynamics states that the entropy of a system approaches a constant value as the temperature approaches absolute zero.