Download Engineering and Technology Practice Questions and more Exams Engineering in PDF only on Docsity!
RECF practice questions
According to the U.S. Dept. of commerce between 2008 and 2018 U.S. STEM jobs are predicted to growby __ % compared to a growth rate estimated of just under 10 % for non-STEM jobs. - โ โ 17%
Which of the following engineers work to create roads bridges and tunnels? - โ โ Civil Engineers The difference between hardwood and softwood is -softwoods are from coniferous trees โ โ Hardwoods are from deciduous trees,
Quality Control inspects materials during the manufacturing process to -material has the correct characteristics โ โ ensure that each
Composite materials have revolutionized which industry? - โ โ Aerospace what are the five largest fields of engineering? - โ โ Chemical, industrial, electrical, mechanical, civl Another good way to describe engineering is simply saying that engineering is - โ โ Problem Solving Select the best definition for what engineering is: -things to solve problems for man โ โ the Use of tools and materials to create
Mercury is known in space history as - โ โ the first US manned rocket system Neil Armstrong - โ โ Was the first man to walk on the moon Alan Shepard - โ โ Was the first american to orbit the earth
It took Apollo 11 how long to fly to the moon? - โ โ 3 days The space shuttle has flown to the moon how many times? - โ โ 0 the Gemini program used an Atlas Rocket - โ โ False Spaceship One was the name of the first lunar lander in 1969. - โ โ False The next new fleet of spacecraft to fly to the moon and Mars will incorporate some 40 year oldtechnologies - โ โ True
Man first landed on Mars in 1972 - โ โ False Composite materials are lighter and much less expensive than more traditional materials such as steeland plastics - โ โ False
The Saturn V rocket is the largest rocket ever built - โ โ True The first moon landing was in 1959 - โ โ False Copper, zinc, and nickel mixed together make an alloy we know as brass - โ โ True Steel nickel and chromium together make an alloy we know as stainless steel - โ โ True Hardwoods are the most widely used home construction materials - โ โ False
Two main resin families used in composite materials are - โ โ Epoxy and ethyl ester Examples of precious metals: - โ โ Platinum, gold and silver Injection molding is used predominately in - โ โ Thermoplastic processes Wood veneers are used to: -expensive woods. (both A and B) โ โ Making plywood and creating thin wood laminates to cover less
Plastics can only be recycled if - โ โ They are thermoplastics Alloys are - โ โ a mixture of two metals to create a metal with different properties What units are used to measure electrical current? - โ โ amperes What units are used to measure electrical resistance? - โ โ ohms a multimeter is a device that can measure - โ โ voltage, current and resistance A full-time engineer works eight hours a day, five days a week and is allowed four weeks of paid time offper year. Approximately how many hours does the engineer work in one year? - โ โ 2000 hours
If you received three job offers, one for $14 per hour, one for $2400 per month and one for $27,750 peryear which job should you take if salary was your only consideration? - โ โ 14 per hour
Mechanical engineers: -and torque โ โ Design systems with pulleys, instruments, gears, drives, cams, power
Aerospace engineers: - โ โ Design systems for aeronautics Civil engineers - โ โ Design bridges, roadways and dams Electrical engineers: - โ โ Design electrical power systems In the airflow diagram letter A refers to: - โ โ low pressure In the airflow diagram letter B refers to: - โ โ High pressure In the airflow diagram letter c refers to - โ โ airfoil In the above airflow diagram letter D refers to - โ โ Lift The part of the robot that grasps is called the - โ โ Manipulator From the robotic arm picture, identify Part A - โ โ Waist From the robotic arm picture, identify part B - โ โ Shoulder From the robotic arm picture, identify part C - โ โ Elbow From the robotic arm picture identify part D - โ โ Wrist
A temperature of 45 degrees C is equal to ____ degrees F - โ โ 113 degrees An air conditioner can remove 7500 BTU per hour. This is the equivalent of __ kilowatts. kW = (BTU/h.000293) - โ โ 220
Recall that V=IR and P=VI. How much power must a 5 V battery provide to drive a 25 Ohm load? - 5 Watt โ โ
If a 32 tooth gear is the input gear what is the gear ratio at the rightmost 8 tooth gear? - โ โ 3: If the leftmost 32 gear turns counterclockwise, which direction will the rightmost 8 tooth gear turn? - โ counterclockwise โ
In the gear setup pictured below, the small gears have 8 teeth and the larger ones have 24. How fastmust the left axle rotate so that the right axle will rotate once per second? - โ โ 3 turns per second
If the 32 tooth gear is the input gear, what is the gear ratio? (The other gear pictured is a 24 tooth gear)- โ โ 3:
In the gear setup pictured, the small gears have 8 teeth and the larger ones have 24. How fast must theupper left axle rotate so that the wheel on the lower rotates once per second? - โ โ 3 turns per second mass production of parts requires -motion studies โ โ jigs and fixtures, robotics and/or automation, time and
If a position is shown relative to the origin, that point is described as a____ coordinate - absolute โ โ
If the X position is the 3.5, the Z position is -.3 and the Y position is 2, the coordinates should be written:- โ โ (3.5, 2, -.3)
When drawing in CAD/CAM, the ___ grid contains points that the cursor can snap to during sketching - โ โ Snap
Match the correct safety color with what it represents. ORANGE represents: -machinery or energized equipment that may cut, crush or otherwise injure. Inside transmission guards โ โ Warning - Parts of for pulleys, gears, etc Match the correct safety color with what it represents. BLUE represents: -and bulletin boards. Specific warnings against starting, using or moving equipment being repaired. โ โ Information - Signs
Match the correct safety color with what it represents. Red represents: -and fire equipment. Stop - Emergency stop bar or button on machinery. โ โ Danger/ emergency
Match the correct safety color with what it represents. WHITE represents: -storage and cleanup areas โ โ Boundaries - Waste
Match the correct safety color with what it represents. GREEN represents: -safety equipment and first aid. โ โ Safety - Location of
Match the correct safety color with what it represents. YELLOW representsL -Tripping, falling and striking hazards. Walkways, railings, trip hazards and machine clearance areas. โ โ Caution -
What does the acronym OSHA stand for? - โ โ Occupation Safety and health Administration What is the function of OSHA - โ โ to ensure a safe workplace for all workers
a work area should be kept clean by removing any dust, metal wood or plastic shavings from the floor,bench tops, and equipment. - โ โ True
When cutting curves on a band saw, relief cuts should be used. - โ โ True When using a bench belt sander, a stop should be used to keep the belt from throwing the stock. - โ True โ
The chuck key on a drill press should remain in the chuck at all times - โ โ False The material to be drilled may safely be held in the hands - โ โ False When using a bench to disc sander, the stock should be kept moving to avoid burning the disc or tehstock - โ โ True
The use of clamps or a drill vise is proper procedure when using a drill press - โ โ True Eye protection is only required for the operator of powered machinery, not the assistant or onlooker. - โ โ False
It is not necessary to select the proper speed on a drill press, one speed works for all materials - False โ โ
Adjustments can be made to a closer tolerance when the belt sander is running - โ โ False The side of the grinding wheel is used for rough grinding - โ โ False
The grinder should be stopped before adjusting the bench rest - โ โ True The grinder should only be used with ferrous metals - โ โ True Orthographic drawing typically have how many orthogonal views (DONT COUNT ISOMETRIC VIEWS) - โ 3 โ
Isometric drawings - โ โ all of the above A working drawing or shop drawing is the same thing as - โ โ orthographic Which of the following is NOT true of an electrical schematic diagram? -distance and scale of components in circuit โ โ shows accurate
The following schematic is an example of what type of circuit? - โ โ Series-parallel When documenting a part or assembly on a drawing, specialty views are often used to provide moreclarity to the part/assembly for fabrication this view is called: - โ โ Break view
Identify the illustrated drawing view type: - โ โ alternate position view Taking dimensions and making sketches of built parts and facilities are commonly referred to as: - โ As built โ
Which is the correct TOP view in the figure? - โ โ C
Step 4 - โ โ Generate ideas or brainstorm Step 5 - โ โ Select a solution Step 6 - โ โ Design and build Step 7 - โ โ Implement solution Step 8 - โ โ test and evaluate Step 9 - โ โ Redesign heat can be defined as - โ โ Latent energy The purpose of a thermal system is to maintain a desired temperature in a : - โ โ confined space One of the main applications of a thermal system is in: - โ โ Food preservations Where on the farenheit scale does water boil? - โ โ 212 degrees
