Kuis 1 - ELemen Mesin 1 D

A single riveted lap joint is made between 15 mm thick plates. The rivet diameter and pitch are 25 mm and 75 mm respectively. The permissible tensile stresses of plate = 450 MPa, the permissible shear stresses of rivet = 350 MPa, and the permissible crushing stresses of rivet = 660 MPa. If the above joint is subjected to a load per pitch length of 100 kN, find out the actual stresses developed in the plates:

• 133,33 MPa

• 145,55 MPa

• 190,33 MPa

• 220,20 MPa

• 240,22 MPa

A single riveted lap joint is made between 15 mm thick plates. The rivet diameter and pitch are 25 mm and 75 mm respectively. The permissible tensile stresses of plate = 420 MPa, the permissible shear stresses of rivet = 300 MPa, and the permissible crushing stresses of rivet = 620 MPa. If the above joint is subjected to a load per pitch length of 125 kN, find out the actual shearing stresses developed in the rivets:

• 155,30 MPa

• 340, 54 MPa

• 254,77 MPa

• 100,30 MPa

• 300,40

A single riveted lap joint is made between 15 mm thick plates. The rivet diameter and pitch are 25 mm and 75 mm respectively. The permissible tensile stresses of plate = 400 MPa, the permissible shear stresses of rivet = 320 MPa, and the permissible crushing stresses of rivet = 640 MPa. If the above joint is subjected to a load per pitch length of 120 kN, find out the actual crushing stresses developed in the rivets:

• 240 MPa

• 320 MPa

• 400 MPa

• 200 MPa

• 180 MPa

A double riveted lap joint of 10 mm plates with 20 mm diameter rivets having a pitch of 60 mm. Assume: permissible tensile stress in plate = 120 MPa, permissible shearing stress in rivets = 100 MPa, permissible crushing stress in rivets = 200 MPa. Find the tearing resistance of the plate per pitch length.

• 30 kN

• 34 KN

• 38 kN

• 40 kN

• 48 kN

A double riveted lap joint of 10 mm plates with 20 mm diameter rivets having a pitch of 60 mm. Assume: permissible tensile stress in plate = 150 MPa, permissible shearing stress in rivets = 120 MPa, permissible crushing stress in rivets = 250 MPa. Find the shearing resistance of the rivets

• 62,20 kN

• 65,20 kN

• 70,50 kN

• 75,36 kN

• 80,24 kN

A double riveted lap joint of 8 mm plates with 20 mm diameter rivets having a pitch of 60 mm. Assume: permissible tensile stress in plate = 130 MPa, permissible shearing stress in rivets = 100 MPa, permissible crushing stress in rivets = 210 MPa. Find the crushing resistance of the rivets

• 62,4 kN

• 67,2 kN

• 72,4 kN

• 81,5 kN

• 78,2 kN

A bracket is supported by means of 3 rivets of same size (diameter = 20 mm) and loaded as shown in figure. Find the shear stress load on rivet A

• 79,61 MPa

• 62,66 MPa

• 82,40 MPa

• 50,50 MPa

• 72,53 MPa

A 20 mm thick plate of bracket is supported by means of 4 rivets of same size (diameter 20 mm), as shown in figure. If P = 20 kN, find the shear stress load on rivet D

• 8,84 MPa

• 12,94 MPa

• 15,92 MPa

• 18,64 MPa

• 18,85 MPa

A 20 mm thick plate of bracket is supported by means of 4 rivets of same size (diameter 20 mm), as shown in figure. Find the maximum shear load on the rivet. Assume: X = Y = 200 mm, and l₁ = l₂ = l₃ = l₄ = 141,42 mm.

• 12,58 MPa

• 14,45 MPa

• 16,20 MPa

• 18,44 MPa

• 24,45 MPa

A 30 mm thick plate of bracket is supported by means of 4 rivets of same size (diameter 20 mm) and loaded by P = 20 kN, as shown in figure. Find the value of resultant load on rivet D.

• 12,30 kN

• 22,88 kN

• 10,80 kN

• 20,24 kN

• 15,81 kN