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To ensure self – locking in a screw jack it is essential that helix angle is
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Dec 21, 2017
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chandu
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To ensure self – locking in a screw jack it is essential that helix angle is
(a) Larger than friction angle
(b) Smaller than friction angle
(c) Equal to friction angle
(d) Such as to give maximum efficiency in lifting
ies-objectives-2
1996
md
power-screws
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