Test: Welded & Riveted Joints - 3 - Mechanical Engineering MCQ

Which one of the following is not an advantage of welded joints over riveted joint

The relationship between diameter of rivet hole and plate thickness (Unwin formula) is given by

For longitudinal joint in boiler, the type of joint used is

The centre to centre distance between two consecutive rivets in a row is called

Strength of a rivet in bearing is given by
where
σ_b = bearing stress
σ_t = tensile stress
τ = shear stress

The objective of caulking in a riveted joint is to make the joint

The important criterion in case of riveted joints for material storage and other ordinary tanks is

In a fillet welded joint, the weakest area of weld is

A rivet in a structure shown in figure, has to support a load of 2 kN. If the primary and secondary shear stresses are 6.37 MPa and 13.50 MPa respectively, the maximum stress developed in the rivet is

A riveted joint (with four rivets numbered 1 to 4) as shown in the figure is subjected to an eccentric loading. The least and the most stressed rivets respectively are:

If the ratio of diameter of rivet hole to the pitch of rivets is 0.25 then tearing efficiency of the joint is

A bracket (shown in figure) is rigidly mounted on wall using four rivets. Each rivet is 6 mm in diameter and has an effective length of 12 mm. Direct shear stress (in MPa) in the most heavily loaded rivet is

The diameter of a rivet will be if plate thickness is 8 mm

A double riveted double cover butt joint in plates 20 mm thick is made with 25 mm diameter rivets at 100 mm pitch. The permissible stresses are σ_t = 120 MPa, τ = 100 MPa, σ_c= 150 MPa. Taking the strength of the rivet in double shear as twice that of single shear, the tearing resistance of the plate is

The permissible stress in a fillet weld is 100 N/mm². The fillet weld has equal leg lengths of 15 mm each. The allowable shearing load on per cm length of the weld is

Two plates are joined together by means of single transverse and double parallel fillet welds as shown in the given figure. If the size of fillet is 5 mm and allowable shear load power mm is 300 N, what is the approximate length of each parallel fillet?

A steel plate 100 mm wide and 10 mm thick welded to another steel plate by means of double parallel fillet welds

Q. The plates are subjected to a static tensile force of 50 kN. If the permissible shear stress in the weld is 94 N/mm². Then required length of the welds is