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GATE 2020: Strength of Material Quiz 11

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Question 1

Universal Testing Machine can be used to perform tests on:

Question 2

In Ball Indentation Test shown, if L is constant load and area of spherical surface in indentation is A sq. mm, then Brinell Hardness Number is written as:

Question 3

Two identical circular rods of same diameter and same length are subjected to same magnitude of axial tensile force. One of the rods is made out of mild steel having the modulus of elasticity of 206 Gpa. The other rod is made out of cast iron having he modulus of elasticity of 100 Gpa. Assume both the materials to be homogeneous and isotropic and the axial force causes the same amount of uniform stress in both the rods. The stresses developed are within the proportional limit of the respective materials. Which of the following observations is correct?

Question 4

A stepped steel shaft shown below is subjected to 10 Nm torque. If the rigidity is 80 GPa and θ₁ = 0.33 × 10^–3 ,the strain energy in the shaft in N mm is
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Question 5

A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q(0.2,100), R(0.6,140) and S(0.8,130). 'Q' is the yield point, 'R' is the UTS point and 'S' the fracture point.

The toughness of the material [in MJ/m³] is __________

Question 6

Match List I with List II and select the correct answer using the codes given below the lists:
List I (Property)
(A). Tensile strength
(B). Impact strength
(C). Bending strength
(D). Fatigue strength
List II (Testing Machine)
(1). Rotating Bending Machine
(2). Three-Point Loading Machine
(3). Universal Testing Machine
(4). Izod Testing Machine

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ESE & GATE ME Strength of Materials

Aug 12ESE & GATE ME