| 1. | In an open pair, the two elements of a pair ? | |
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have a surface contact when in motion
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have a line or point contact when in motion
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are kept in contact by the action of external forces, when in motion
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are not held together mechanically
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Report Question| 2. | A point on a connecting link (excluding end points) of a double slider crank mechanism traces a ? | |
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straight line path
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hyperbolic path
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parabolic path
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elliptical path
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| 3. | The contact ratio is given by ? | |
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Length of the path of approach / Circular pitch
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Length of the path of recess / Circular pitch
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Length of the arc of contact / Circular pitch
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Length of the arc of approach / cos ?
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| 4. | Which of the following is an example of a higher pair ? | |
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Toothed gearing
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Belt and rope drive
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Ball and roller bearing
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all of these
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| 5. | Creep in belt drive is due to ? | |
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weak material of the belt
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weak material of the pulley
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uneven extensions and contractions of the belt when it passes from tight side to slack side
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expansion of the belt
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| 6. | A kinematic chain is known as a mechanism when ? | |
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none of the links is fixed
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one of the links is fixed
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two of the links are fixed
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none of these
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| 7. | The arrangement is called bevel gearing, when two................are connected by gears ? | |
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intersecting and coplaner shafts
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non-intersecting and non-coplaner shaft
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parallel and coplaner shafts
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parallel and non-copianer shafts
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| 8. | The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as ? | |
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completely constrained motion
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incompletely constrained motion
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successfully constrained motion
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none of these
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| 9. | Which of the following is a higher pair ? | |
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Belt and pulley
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Turning pair
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Screw pair
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Sliding pair
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| 10. | Which of the following is a turning pair ? | |
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Piston and cylinder of a reciprocating steam engine
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Shaft with collars at both ends fitted into a circular hole
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Lead screw of a lathe with nut
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Ball and a socket joint
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