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Cam and Linkage Mechanisms Quiz

1. The document discusses different types of mechanical linkages and components used in cam and follower systems including: reciprocating cams, which have followers that oscillate parallel to the cam axis; pitch points on cams; and higher pairs which involve point or line contact between rotating elements. 2. It also addresses different mechanisms like the Hart and Pantograph, which have 4 and higher pair links respectively. Questions cover the components of elliptical trammels and properties of the cam angle, involute cams for engines, and common cam and follower systems like radial and reversing roller followers. 3. Key terms defined include kinematic pairs, the cam angle measuring follower displacement, and mechanisms being combinations of resistant

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140 views2 pages

Cam and Linkage Mechanisms Quiz

1. The document discusses different types of mechanical linkages and components used in cam and follower systems including: reciprocating cams, which have followers that oscillate parallel to the cam axis; pitch points on cams; and higher pairs which involve point or line contact between rotating elements. 2. It also addresses different mechanisms like the Hart and Pantograph, which have 4 and higher pair links respectively. Questions cover the components of elliptical trammels and properties of the cam angle, involute cams for engines, and common cam and follower systems like radial and reversing roller followers. 3. Key terms defined include kinematic pairs, the cam angle measuring follower displacement, and mechanisms being combinations of resistant

Uploaded by

allovid
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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CAMS AND LINKAGES SAMPLE ELEMENTS 1.

. A cam where the follower reciprocates or oscillates in a plane parallel to the axis of the cam is called: a. Circular cam b. Reciprocating cam c. Cylindrical cam d. Tangential cam 2. A plate. Cylinder or other solid with a surface of contact so designed as to cause or modify the motion of the piece. a. Cam b. Gear c. Disc d. Pulley 3. The pitch point on a cam refers to a. Any point on pitch curve b. A point at a distance equal to pitch circle radius from the center. c. The point of cam pitch circle that has the maximum pressure angle d. None of the above 4. Kleins construction can be used when a. Crank has a uniform angular acceleration b. Crank has a uniform angular velocity c. Crank has a non-uniform angular velocity d. B and C above 5. Hart mechanism has how many links? a. 4 b. 6 c. 8 d. 12 6. A cam with a roller follower would constitute which type of pair? a. Close pair b. Higher pair c. Lower pair d. Open pair 7. A Pantograph is a mechanism having a. Higher pairs b. Lower pairs c. Rolling pairs d. Spherical pairs 8. In elliptical trammels, a. All four pairs are turning b. One pair turning and three pairs sliding c. Three pairs turning and one pair sliding d. Two pairs and two pairs sliding 9. The follower reciprocates or oscillates in a plane perpendicular to the axis of rotation of the cam: 1 a. Cam curves b. Cylindrical cam c. Tangential cam d. Radial cam A shaft revolving in a bearing forms a: a. Lower pair b. Sliding pair c. Higher pair d. Cylindrical pair Select the one that is a higher pair: a. Thomson indicator mechanism b. Harts straight line mechanism c. Crossby indicator mechanism d. Tooth gearing mechanism The mechanism used to enlarge or reduce moments for reproducing drawings to different scales is called: a. Clinograph b. Trisquare c. Graphometer d. Pantograph Kinematic pairs are those parts that have: a. Point or line contact between the two elements when in motion b. Surface contact between the two elements when in motion c. Elements of pairs not held together mechanically d. Two elements that allow relative motion The cam angle is: a. The angle of rotation of the cam for a definite displacement of the follower b. Angle subtended by live portion of cam at the cam center c. The angle subtended at the cam center by the portion of cam during which the follower moves d. The angle subtended by the cam at the cam center when the follower dwells The type of cam used for low and moderate speed engines is generally: a. Harmonic b. Tangent c. Involute d. Flat Coriolis component of acceleration is found in: a. Four bar mechanism b. Mechanism of steam engine c. Lower pair

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d. Whitworth quick-return motion 17. A combination of resistant bodies so arranged that by their means the mechanical forces of mixture can be compelled to produce same effect or work accompanied with certain determination motion. a. Turbine b. Resistors c. Machine d. Mechanism 18. A structure which supports the moving parts and regulates the path, or kind of motion of some of the parts. a. Body b. Post c. Frame -

d. Foundation 19. The 3 most commonly used cam and follower system are radial and offset translating roller follower and ____ roller follower. a. Reversing b. Pulsating c. Swinging d. Actuating 20. Cam in general may be divided into two classes: uniform motion cam and ___ motion cam. a. Reverse b. Gravity c. Decelerated d. Accelerated - End -

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