mechanisms jeopardy q $100 q $200 q $300 q $400 q $500 q $100 q $200 q $300 q $400 q $500 final...
Post on 17-Jan-2016
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Mechanisms JeopardyQ $100Q $200Q $300Q $400Q $500Q $100Q $100Q $100Q $100Q $200Q $200Q $200Q $200Q $300Q $300Q $300Q $300Q $400Q $400Q $400Q $400Q $500Q $500Q $500Q $500Final Jeopardy
Levers / Incline Planes
Wheel & Axles / Pulleys
Screws / Wedges
Gears / Chain Drives
$100 Levers / Inclined PlanesOf the three classes, the __________ is the only one in which the effort force and the load force act in the same direction.
$100 Levers / Inclined Planes1stclass lever
$200 Levers / Inclined PlanesAn inclined plane with an IMA of 3.69 and an AMA of 2.97 is _______ efficient.
$200 Levers / Inclined Planes80.5%
$300 Levers / Inclined Planes _____________ levers, like the one in the diagram below, will always have a mechanical advantage with a value ________________.
$300 Levers / Inclined Planes3rd-class;
between 0 and 1
$400 Levers / Incline PlanesThe ideal effort force that would be needed to move this lever in the absence of friction is _______ .
$400 Levers / Incline Planes75 pounds
$500 Levers / Inclined Planes__________ is the ideal mechanical advantage of this inclined plane.99 in..
$500 Levers / Inclined Planes2.93
$100 Wheel and Axles / PulleysThe ideal mechanical advantage of a pulley system is indicated by the ______________.
$100 Wheel & Axles / PulleysNumber of Support Cables
$200 Wheel & Axles / Pulleys___________ is the linear distance traveled in one revolution by a wheel with a 21 inch diameter.
$200 Wheel & Axles / Pulleys65.94 inches
$300 Wheel & Axles / PulleysA wheel and axle system that is 75% efficient contains an axle that has an 8 inch diameter. The distance from the center of the axle to the crank handle is ___________ , given that the systems ideal mechanical advantage is 4.
$300 Wheel & Axles / Pulleys16 inches
$400 Wheel & Axles / PulleysThe pulley system shown is ________ efficient.
$400 Wheel & Axles / Pulleys67 %
$500 Wheel & Axles / PulleysA shutoff valve is designed to operate with 65 pounds of effort force. The valve will encounter 325 pounds of resistance force applied to a 4 inch diameter axle. The required wheel diameter to overcome the resistance force is __________.
$500 Wheel & Axles / Pulleys20 inches
$100 Screws / WedgesThe diameter of the screw in diagram is __________ .
$100 Screws / Wedges1 inch
$200 Screws / WedgesTo calculate the pitch of a unified screw thread, one must ______________________.
$200 Screws / Wedgesdivide the value of 1 inch by the number of threads that occur in 1 inch parallel to the screw axis.
$300 Screws / WedgesMake an annotated sketch of a isosceles-shaped wedge. Include all variables associated with the calculation its actual mechanical advantage.
$300 Screws / Wedges
$400 Screws / WedgesA wrench with an 8 inch handle is used to install a - 24 UNF bolt into the engine of a truck. The mechanical advantage gained in the system is ____________.
$400 Screws / Wedges602.88
$500 Screws / WedgesAn actual effort of 500 pounds is applied to the wedge shown. Given that the wedges cutting action is 90% efficient, the resistance applied to the wedge is ________.
$500 Screws / Wedges900 pounds
$100 Gears / Chain DrivesThe difference between a simple gear train and a compound gear train is ___________.
$100 Gears / Chain DrivesSimple gear trains have only one gear per shaft. Compound gear trains have at least one idler gear shaft that carries two gears.
$200 Gears / Chain DrivesThe gear ratio of the simple gear train shown is ______.
$200 Gears / Chain Drives4 : 1
$300 Gears / Chain DrivesWhen calculating gear ratio, the number of teeth, diameter, and torque have direct relationships. While _____________ has an inverse relationship to the others.
$300 Gears / Chain DrivesAngular Velocity
$400 Gears / Chain DrivesIn the belt driven system shown, pulley B has a diameter of 16 inches. It is being driven by pulley A, which has a diameter of 4 inches. If pulley A is spinning at 60 RPMs, then pulley B is spinning at _____________ .
$400 Gears / Chain Drives15 RPMS
$500 Gears / Chain DrivesA compound gear train is composed of four gears, A, B, C, and D. Gear A has 15 teeth and is meshed with gear B. Gear B has 25 teeth and shares a shaft with gear C, which has 10 teeth. Gear C is meshed with gear D, the output gear. Power is supplied at gear A with 100 ftlb of torque and is traveling at 1600 rpm. Gear D should have _______ teeth for the system to have the necessary torque output of 800 ftlb
$500 Gears / Chain Drives48
$100 Key WordsThe ratio of the magnitude of the resistance and effort forces applied to a system.
$100 Key WordsActual MechanicalAdvantage
$200 Key WordsA force that produces or tends to produce rotation or torsion
$200 Key WordsTorque
$300 Key WordsA gear positioned between the driver and the driven gear used to change rotational direction.
$300 Key WordsIdler Gear
$400 Key WordsThe turning effect of a force about a point equal to the magnitude of the force times the perpendicular distance from the point to the line of action from the force.
$400 Key WordsMoment
$500 Key WordsA condition where there are no net external forces acting upon a particle or rigid body and the body remains at rest or continues at a constant velocity
$500 Key WordsStatic Equilibrium
Final Jeopardy_______ is the ideal mechanical advantage of this compound machine.
Final Jeopardy Answer36