Kuis 1 - Elemen Mesin 1

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 75 kN, find out the actual stresses developed in the plates:

• 100 MPa

• 200 MPa

• 40 MPa

• 400 MPa

• 152 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 = 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 75 kN, find out the actual shearing stresses developed in the rivets:

• 100 MPa

• 40,56 MPa

• 320 MPa

• 152,86 MPa

• 38,21 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 = 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 75 kN, find out the actual crushing stresses developed in the rivets:

• 640 MPa

• 100 MPa

• 200 MPa

• 40 MPa

• 38,21

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 = 110 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:

• 62,8 kN

• 35,2 kN

• 52,8 kN

• 32 kN

• 64 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 = 200 MPa. Find the shearing resistance of the rivets.

• 125,6 kN

• 62,8 kN

• 31,4 kN

• 50,4 kN

• 44,24

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 = 200 MPa. Find the crushing resistance of the rivets:

• 32 kN

• 64 kN

• 100 kN

• 80 kN

• 96 kN

A 15 mm thick plate of bracket is supported by means of 4 rivets of same size (diameter 10 mm), as shown in figure. Determine the maximum load (P) if the permissible shear stress of rivets is 120 MPa

• 18 kN

• 75,36 kN

• 37,68 kN

• 72 kN

• 90 kN

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 value of resultant load on rivet D.

• 10 kN

• 15 kN

• 12,24 kN

• 22,20 kN

• 15,81 kN

An eccentrically loaded lap riveted joint is to be designed for a steel bracket as shown in figure. The maximum resultant shear load is on rivet number:

• 2 and 3

• 1 and 2

• 3 and 4

• 1 and 4

• 4

A loaded lap riveted joint is to be designed for a steel bracket as shown in figure. Find the maximum resultant shear load on the rivet. Assume: X = Y = 200 mm, and l₁ = l₂ = l₃ = l₄ = 141,42 mm.

• 2,88 kN

• 3,22 kN

• 3,94 kN

• 4,42 kN

• 4,86 kN