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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

Perpendicular
Co-axial
None of these
Parallel

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Machine Design
In designing thick cylinders, the equation used is

Lame's equation
Clavarinos' equation
All of these
Birnie's equation

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Machine Design
Which of the following material has the maximum ductility?

Copper
Aluminium
Zinc
Mild steel

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Machine Design
When two helical springs of equal lengths are arranged to form a cluster spring, then

Load taken by each spring will be half the total load
Both A and B is correct
Shear stress in each spring will be equal
Only A is correct

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Machine Design
If a spring is cut down into two springs, the stiffness of cut springs will be

Same
Double
Half
None of these

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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

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

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