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GATE 2019 Strength of Materials Day 7 Quiz

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Question 1

The compression test is carried on………………….. material:

Question 2

Statement 1: to test a brittle material, maximum principle stress theory is suitable.
Statement 2: Maximum Principle stress theory is not good for mild steel body.

Question 3

A Particular section of steel shaft is subjected to maximum bending stress of 160 MPa and a maximum shear stress equal to 60 MPa. The yield point in tension of the material is 400 MPa. If maximum principal stress theory is used, the FOS will be _______.

Question 4

A 200 mm long, stress free rod at room temperature is held between two immovable rigid walls. The temperature of the rod is uniformly raised by 250 °C. If the Young's modulus and coefficient of thermal expansion are 200 GPa and Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-ME-2014-Set-1_files\image133.png, respectively, the magnitude of the longitudinal stress (in MPa) developed in the rod

is _______

Question 5

What would be the equivalent stress (MPa) in simple tension according to maximum principal strain theory. If At a point in a structure there are two mutually perpendicular tensile stresses of 600 MPa and 200MPa at failure. poisson’s ratio is 0.25.

Question 6

Match list-I with List-II and select the correct answer using the codes given below the list:
List –I
(Material properties)
A) Ductility
B) Toughness
C) Endurance limit
D) Resistance to penetration
List-II
(Test to determine properties)
1) Impact test
2) Fatigue test
3) Tension test
4) Hardness test
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Jul 5ESE & GATE CE