Mechanical Engineering :: Machine Design
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The load cup of a screw jack is made separate from the head of the spindle to
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Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that
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The centre distance between two meshing involute gears is equal to
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Which of the following statement is wrong ?
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In a flange coupling, the thickness of flanges is taken as one-half the diameter of shaft.
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A.
The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts |
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B.
The V-belt drive is used with large centre distance |
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C.
The V-belt may be operated in either direction with tight side of the belt at the top or bottom |
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D.
The ratio of driving tensions in V-belt drive is more than flat belt drives |