REC Foundation (RECF) EOC Practice Exam

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• What is the aspect ratio of a rectangular wing with wingspan 20 meters and chord length 2 meters?
• Recall that V=IR and P=VI. How much power must a 5 V battery provide to drive a 25 Ohm load?
• What is a common reason a robot might be disqualified?
• Blue safety color represents which of the following?
• A motor on a train converts 160,000 J of electrical energy into 80,000 J of kinetic energy. What is the efficiency of the motor?
• What is the primary purpose of field alignment and calibration in matches?
• Which statement about deterministic initialization is true?
• How does a well-structured design process balance constraints and creativity?
• A device consumes 120,000 J of energy and delivers 90,000 J of useful work. What is the efficiency?
• Graphite is a main component in many:
• Which astronaut is associated with the claim that he was the first man to walk on the Moon in the provided material?
• Alloys are:
• Which discipline focuses on designing for aeronautics?
• How should a team handle third-party resources like open-source code?
• If a 32 tooth gear is the input gear what is the gear ratio at the rightmost 8 tooth gear?
• Are composite materials light?
• A tensile test consists of a material that is subject to __________.
• What should a safety risk assessment cover?
• Which statement best describes digital signals?
• Select the best definition of engineering.
• A temperature of 45 degrees C is equal to ____ degrees F
• What does the number on the recycling symbol at the bottom of a plastic container indicate?
• How would you address a noisy sensor reading?
• Everything with iron is magnetic.
• What is the difference between tele-operated mode and autonomous mode?
• Which sensor is commonly used for measuring orientation on VEX robots?
• What is the conversion factor used to convert BTU per hour to kilowatts in the given relation?
• Which engineering discipline focuses on systems used in aeronautics?
• According to the material, Neil Armstrong was the...
• Which of the following describes the first step in the Engineering Design Cycle?
• Which type of engineer is primarily responsible for designing and constructing roads, bridges, and tunnels?
• Pre-stressed concrete is concrete that is __________.
• How does an engineering notebook demonstrate iterative design?
• What is the role of retrospectives in the engineering process?
• Which option is NOT listed among the five largest fields of engineering in the material?
• Motor controls
• A multimeter is a device that can measure which of the following?
• Name a key ethical expectation in robotics competitions.
• Which astronaut is associated with the claim that he was the first American to orbit the Earth in the provided material?
• What is a go/no-go test?
• What units are used to measure electrical resistance?
• Can thermoplastics be recycled?
• Trusses work because the individual members __________.
• What is the primary purpose of retrospectives in an engineering project?
• Maintaining a bill of materials helps ensure what constraint is satisfied?
• What practice helps achieve repeatable robot behavior across matches?
• An air conditioner can remove 7500 BTU per hour. This is the equivalent of __ kilowatts. kW = (BTU/h .000293)
• The hardness of steel can be increased by all of these methods except
• Safety ORANGE represents:
• Using Ohm's law and P=VI, what is the current through a 25 Ω load when connected to a 5 V supply?
• Which material is described as having the highest strength-to-weight ratio?
• Which of the following actions increases the hardness of steel?
• If the leftmost gear with 32 teeth turns counterclockwise, which direction does the rightmost gear turn?
• How long did Apollo 11 take to travel to the Moon?
• If you received three full-time job offers, one for $12 per hour, one for $1,400 per month, and one for $26,500 per year, which job should you take if salary was your only consideration?
• What is the primary purpose of an engineering notebook in RECF competitions?
• A temperature of 40 degrees C is equal to __________ degrees F.
• In a tensile test, which measurement most directly indicates a material's ductility?
• What is the role of the drive team in a competition match?
• Where is the safest place to stand when operating a band saw?
• What is the impact of sensor fusion on autonomous navigation?
• In Cartesian coordinates, which order correctly represents a point as (X, Y, Z)?
• Which combination is described as the five largest fields of engineering in the material?
• In which setting would wearing safety eye wear NOT be necessary?
• What is the purpose of a final functional test before competition?
• Which list correctly identifies ferrous metals?
• What units are used to measure electrical current?
• What is a common risk if you ignore safety practices when building robotics hardware?
• What does Ferrous mean?
• Which government department provided the STEM job forecast?
• In fault-tolerant robot software, what is the purpose of a fallback routine?
• Which statement about Pine is true?
• According to the U.S. Department of Commerce, by what percent are U.S. STEM jobs predicted to grow between 2008 and 2018?
• Which item is a softwood?
• In a gear train, how does increasing gear reduction affect torque and speed?
• Which of these is not a common programming language?
• Pneumatics systems require __________.
• Why is field alignment and calibration crucial?
• Using the Ideal Gas Law with V = 0.886 L, n = 0.00801 mol, T = 311 K, and R = 0.08206 L·atm/(mol·K), what is the pressure in atm?
• Which engineering discipline is associated with designing electrical power systems?
• When incorporating open-source or third-party resources, which practice best guards against legal and compatibility issues?
• Which spacecraft first landed on Mars?
• If the X position is 3.5, the Z position is -0.3 and the Y position is 2, the Cartesian coordinates should be written as:
• Which process uses a mold to shape thermoplastics?
• In CAD/CAM, the grid whose points the cursor can snap to is called the Snap grid.
• Which of the following are examples of ferrous metals?
• Quenching, dipping heated metals in oil or water, can change the hardness of the metal.
• What should an engineering decision log capture to inform future work?
• Vacuum forming is used on thermoplastics.
• Which of the following is NOT a characteristic of plastics that makes them good for manufacturing parts?
• Which statement best describes a mock scenario in testing for robotics?
• Which factors should be considered when planning autonomous behavior?
• What units are used to measure electrical current?
• What is the typical voltage provided by a USB connection?
• Which device is used to measure voltage, current, and resistance in electrical circuits?
• Blue safety color represents information such as signs and bulletin boards.
• Which statement about truss design best describes its purpose?
• In what year did the first spacecraft reach the Moon?
• Which statement best captures the difference between digital and analog signals?
• Copper and zinc mixed together form which alloy?
• Which statement best describes analog signals?
• The mechanical advantage of a machine is __________.
• Orange safety color represents which of the following?
• Given X = 3.5, Y = 2, Z = -0.3, how should the coordinates be written?
• Which practice involves inspecting materials during manufacturing to confirm they meet specifications?
• According to the material, Alan Shepard was the...
• Why is modular design advantageous for robotics projects?
• How many times has the Hubble space shuttle flown to the Moon?
• Which safety benefit does a limit switch provide?
• Which of the following is not an engineering drawing?
• What are the most common construction materials?
• What is field management in a competition context?
• Which item is least likely to be included in a bill of materials?
• How should teams respond to a partial or non-functional component during a match?
• Compare pneumatics and hydraulics for typical VEX robots.
• Why are reliable electrical connections important in a robot?
• What is the term for a mixture of two metals that creates a material with different properties?
• Quenching, dipping heated metals in oil or water, can change the:
• A 3 view or shop drawing is the same thing as __________.
• A full-time engineer works eight hours a day, five days a week and is allowed four weeks of paid time off per year. Approximately how many hours does the engineer work in one year?
• What was the name of the first Lunar Lander to land on the Moon?
• What factors influence choosing high-torque versus high-speed motors?
• What is scouting in robotics competitions?
• In the ideal gas calculation, what is the unit of the volume input?
• Which option best explains why early measurement is valuable in design?
• What is the percent composition by mass of a 100-gram salt solution that contains 30 grams of salt?
• Why is performing controlled comparisons important in design?
• Mike rode his bike 600 miles and he carried a spare tire on the trip. To provide equal wear on all 3 tires, he changed his tires while traveling. How many miles of wear did each tire accumulate?
• Examples of precious metals:
• Which statement best describes the effect of increasing the size of the input gear relative to the output gear in a gear train?
• Which metal is considered a precious metal?
• Which outcome occurs when a mechanism is over-engineered?
• Why is a test plan important in robotics development?
• What is the 8-bit binary representation of decimal 25?
• Which statement best describes field management in a robotics competition?
• What is a typical focus of unit testing in a robotics project?
• Crystal rode her bike 600 miles and she carried a spare tire on the trip. To provide equal wear on all tires she changed her tires while traveling. How many miles of wear did each tire accumulate?
• Which field of engineering is primarily responsible for designing bridges, roadways, and dams?
• Which statement best describes the typical design responsibilities of civil engineers?
• The part of the robot that grasps is called the
• Why is understanding the game manual critical?
• What is the purpose of an engineering decision log?
• Explain the trade-off between mechanical advantage and speed.
• What is the function of a limit switch in a mechanism?
• When evaluating a design's reliability, what outcome is most important across repeated trials?
• Which statement best describes engineering as presented in the material?
• Quality Control in manufacturing serves what purpose?
• Which factor is not typically considered when selecting a motor for a robot?
• Which discipline is best described as designing systems with pulleys, gears, drives, and torque?
• Composite materials have made it possible for new flying distance records around the earth.
• Which safety color represents safety guards and pinch points?
• If a bicycle travels 100 miles with two tires on the road and one spare, assuming equal wear across all tires, how many miles of wear does each tire accumulate?
• Which component is used to measure rotation or position in many robots?
• Which statement describes a characteristic of ferrous metals?
• Which unit is used to measure electrical current?
• What is the purpose of a bill of materials in a project notebook?
• Pine, Oak, and Fir are all Oakwoods.
• Ferrous metals are easy detectable with:
• Which device connects power to motors and uses PWM to control motor speed?
• Which Fahrenheit value corresponds to 40 degrees Celsius?
• Which is the best practice when attributing third-party resources?
• Wood veneers are used to produce plywood and thin laminates to cover less expensive woods.
• Which discipline would most likely be responsible for designing electrical power systems?
• Define autonomous mode in RECF events.
• A point described relative to the origin is described as which type of coordinate?
• The microcontroller on a robot
• Which element makes stainless steel rust resistant?
• Which statement describes thermoplastics according to the material?
• Which rocket is historically identified as the largest rocket ever built?
• Are ferrous metals magnetic?
• What is the value of documenting test failures in the design process?
• Which step in the cycle comes after Brainstorm?
• What is the largest rocket ever built?
• Holonomic Drive Train has how many degrees of freedom?
• Which engineering drawing type displays a three-dimensional view with equal scale along three axes?
• List two safety practices essential when building and testing robotics hardware.
• What practice improves long-term maintainability when using modular designs?
• What is a systematic fault-tracing approach when a robot stops unexpectedly?
• How many times has the Hubble Space Telescope (launched aboard a space shuttle) flown to the Moon?
• What is the benefit of unit testing individual components?
• Which practice helps prevent voltage drops and arcing in a robot's electrical system?
• Which is the binary representation of 11?
• What is a benefit of diverse team perspectives in robotics?
• Polymer is another name for Alloy.
• Pine, fir and oak are all:
• What was the name of the lunar module that landed on the Moon during Apollo 11?
• Why use a central power distribution or harness in a robot?
• In CAD/CAM drawing, which grid contains points the cursor can snap to during sketching?
• Which of the following is not measured by frequency?
• What is a common pitfall when designing a mechanism?
• A periodic event occurs 240 times per second. What is its period in seconds?
• What is the typical difference between hardwood and softwood?
• Quenching involves dipping heated metals in which substances?
• How is engineering commonly described in simple terms?
• Which engineering discipline is linked to designing bridges, roadways, and dams?
• How can a team ensure their robot stays within size and weight constraints?
• In the coordinate (3.5, 2, -0.3), which axis does the second value correspond to?
• Why is knowing the official rules essential?
• Composite materials have contributed to increased flying distances.
• Which statement about iterative documentation in an engineering notebook is most accurate?
• In the Engineering Design Cycle, which is Step 2?
• Name three common sensors used on VEX robots and their typical function.
• Robots that run by themselves without human control must utilize ________.
• Composite materials have revolutionized which industry?
• Which action is essential before servicing circuitry?
• How does a PID controller help a robot reach a target?
• How can you ensure code remains safe when sensors fail?
• Which Mars mission landed on Mars in 1997?
• Quenching involves cooling heated metal in oil or water.
• Frequency is measured in __________.
• Robots that run by themselves without human control require
• What are thermoplastics described as in the material?
• When planning autonomous behavior, which item is not typically a primary consideration?
• Which unit is used to measure electrical current?
• If you received three job offers, one for $14 per hour, one for $2400 per month and one for $27,750 per year which job should you take if salary was your only consideration?
• How do you determine if a design is reliable?
• How does version control benefit programming in robotics?
• Which of the following species of wood are classified as softwood?
• Which description best contrasts pneumatics and hydraulics for typical VEX robots?
• Mechanical engineers are primarily associated with which design focus?
• Which wing property is defined as the wingspan divided by the chord length?
• Which two programming concepts are essential for autonomous control?
• How does data logging improve autonomous performance?
• Vacuum forming is used on which type of plastics?