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Cards In This Set
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Which of the following would one use to cut a 3" steel rod into short pieces?
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One would use a hack saw to cut a 3" steel rod into short pieces.
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When a linkage requires an adjustment, which of the following is used to adjust it?
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Linkage adjustments are made by means of a clevis.
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A spring composed of two cone springs joined at their large ends is called a
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A keg spring is composed of two cone springs joined at their large ends.
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A Bourdon gage is used to measure
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A Bourdon gage is used to measure pressure.
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In a micrometer, how many screw threads are there per inch?
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In a micrometer, the screw threads are cut 40 threads per inch.
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If you lift a 100-pound duffle bag through a vertical distance of eight feet, how many foot-pounds will you lift?
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Work = Force × Distance. Work = 100 × 8 = 800 ft-lb.
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In the figure shown below, the distance between corresponding points between two successive threads of a screw is referred to as the
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Pitch is defined as the distance between corresponding points between two successive threads of the screw.
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A truck driver needs to place a 450-pound barrel into the bed of his truck. The bed is four feet above the ground. If the driver uses a nine-foot long plank, how many pounds of force will he apply to the barrel?
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The correct answer is C.
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If an engine lifted a 3,300-pound load straight up through a distance of 150 feet in two minutes, what was the power of the engine in units of horsepower?
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The correct answer is D.
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A gear train is shown in the figure below. If Gear 4 is removed and a gear of a similar configuration with a larger number of teeth is inserted in its place, the speed of Gear 6 will
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The correct answer is C. In a compound gear train, the speed of the driven gears is not affected by the number of teeth on the intermediate gears. So, the speed of Gear 6 in the arrangement shown in the figure will remain the same even if Gear 4 is replaced with a gear of a similar configuration but with a larger number of teeth.
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Which of the following is an example of a third-class lever?
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The correct answer is A. A third-class lever is one in which an effort is applied between the fulcrum and the resistant load.
As shown in the figure, on the arm of a human being, the load acts on the palm and the fulcrum is at the elbow. The effort acts between the fulcrum (arm) and the load (dumb-bell), resulting in stretching the skin. This is similar to a third-class lever.
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For the pulley arrangement shown below, a is the acceleration of weight W, and a1 and a2 are the accelerations of weights W1 and W2 relative to the fixed pulley. What is the acceleration of W1?
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The correct answer is A. As you know, the accelerations of masses W1 and W2 are equal to and opposite of each other. So, for W1, the relative acceleration equals the acceleration of W1 – the acceleration of W = a1 – a.
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Which of the following gears is used in the differential of an automobile?
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The correct answer is B. The shafts of the differential in an automobile are nonparallel, intersecting, and coplanar. The bevel gear is used to connect these shafts.
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A single capstan bar is gripped four feet from the center of a capstan head. The capstan head has a radius of two feet. A two-ton anchor is to be lifted. How much effort needs to be exerted?
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The correct answer is B.
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A laborer turns a jack one revolution. If the lever handle is 18 inches long and the pitch of the jack screw is
 inch, what is the theoretical mechanical advantage?
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The correct answer is D.
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