Flat spiral springs« Back to Previous Page
A. consist of uniform thin strips
B. are supported at outer end
C. are wound by applying a torque
D. are used in clock-work mechanism
E. all the above.
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E. all the above. |
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E. all the above. |
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E. all the above. |
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E. all the above. |
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E. all the above. |
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