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A screw jack is said to be self – locking if its efficiency is
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asked
Dec 21, 2017
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chandu
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A screw jack is said to be self – locking if its efficiency is
(a) Less than 50% (b) equal to 50%
(c) More than 50% (d) 100%
ies-objectives-2
2002
md
power-screws
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