Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Would depend upon other factors
Remain unaffected with cross-section area
Increasing the cross-section area of bar
Decreasing the cross-section area of bar

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Machine Design
The designation M 33 × 2 of a bolt means

Metric threads of 33 numbers in 2 cm
Metric threads of 33 mm outside diameter and 2 mm pitch
Bolt of 33 mm nominal diameter having 2 threads per cm
Metric threads with cross-section of 33 mm

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Machine Design
The flank of the tooth is the

Surface of the tooth below the pitch surface
Width of the tooth measured along the pitch circle
Surface of the top of the tooth
Surface of the tooth above the pitch surface

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