Mechanical Engineering :: Machine Design
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When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be
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In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.
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In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to
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Which of the following statement is wrong ?
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A.
The solid length of a spring is the product of total number of coils and the diameter of the wire |
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B.
The spring index is the ratio of mean diameter of the coil to the diameter of the wire |
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C.
The spring stiffness is the load required per unit deflection of the spring |
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D.
The pitch of the coil is the axial distance between adjacent coils in the compressed state |