Machine Design - Study Mode
[#291] In a gear, having Involute teeth, the normal to the Involute is a tangent to the
Correct Answer
(A) Base circle
[#292] According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)
Correct Answer
(D) $${ ext{d}} = 6sqrt { ext{t}} $$
[#293] In a boundary lubricated bearing, there is a __________ of lubricant between the journal and the bearing.
Correct Answer
(B) Thin film
[#294] The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for
Correct Answer
(D) Fullering and caulking
[#295] Transverse fillet welded joints are designed for
Correct Answer
(C) Shear strength
Explanation
Solution: Definition: A transverse fillet weld is a weld where the axis of the weld is placed perpendicular to the direction of the applied load. Load action: In a transverse fillet welded joint, the load is applied across the throat of the weld, which results in shear stresses being developed in the weld material. Design basis: Since the primary mode of failure for this type of weld is due to shear across the throat area, the joint is designed considering the shear strength of the weld metal. Reason: Designing for shear strength ensures that the weld can safely resist the applied load without shear failure, thus maintaining the integrity of the joint. Conclusion: Transverse fillet welded joints are always designed based on their shear strength .