Machine Design
The maximum bending stress in a curved beam having symmetrical section always occur at the

Centroidal axis
Neutral axis
Outside fiber
Inside fiber

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Machine Design
A bolt of uniform strength can be developed by

Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt
Keeping the core diameter smaller than the diameter of the unthreaded portion
Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt
None of these

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