Machine Design
A bolt is designed on the basis of __________ with a large factor of safety.

Direct tensile stress
Direct bending stress
Direct compressive stress
Direct shear stress

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Machine Design
Which of the following statement is wrong for a connecting rod?

The most suitable section for the connecting rod is T-section
If Ixx > 4 Iyy, the buckling will occur about Y-axis
If Ixx < 4 Iyy, the buckling will occur about X-axis
The connecting rod will be equally strong in buckling about X-axis and Y-axis, if Ixx = 4 Iyy

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Machine Design
In worm, gears, pitch lead angle is

Half the angle between two inclined faces in axial plane
The angle between the tangent to the pitch helix and the plane of rotation
None of these
The angle between the tangent to the pitch helix and an element of the cylinder

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Machine Design
When the belt is transmitting maximum power,

The tension in slack side is equal to the centrifugal tension
None of these
The tension in tight side is thrice the centrifugal tension
The tension in tight side is twice the centrifugal tension

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