Theory of Machine | Theory of Machine Objective Type Questions and answers


26. Rectangular bar in a rectangular hole is the following type of pair.......


   A.completely constrained motion

   B.partially constrained motion

   C.incompletely constrained motion

   D.freely constrained motion

   E.none of the above


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A.completely constrained motion

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27. Shaft revolving in a bearing is the following type of pair.......


   A.lower pair

   B.higher pair

   C.spherical pair

   D.cylindrical pair

   E.bearing pair


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A.lower pair

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28. Lower pair are those which 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 permit relative motion

   E.none of the above


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B.surface contact between the two elements when in motion

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29. A pantograph is a mechanism with.......


   A.lower pairs

   B.higher pairs

   C.rolling pairs

   D.turning pairs

   E.spherical pairs


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A.lower pairs

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30. Cross head and guides from a.......


   A.lower pair

   B.higher pair

   C.turning pair

   D.rolling pair

   E.sliding pair


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E.sliding pair

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