GATE Prev Year : Strength of Materials Test-1

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Question 1

A thin cylinder of inner radius 500 mm and thickness 10 mm is subjected to an internal pressure of 5 MPa. The average circumferential (hoop) stress in MPa is _________.

• A100
• B250
• C500
• D1000

Question 2

In terms of Poisson’s ratio (ν) the ratio of Young’s Modulus (E) to Shear Modulus (G) of elastic materials is

• A2(1 + v)
• B2(1 – v)
• C
• D

Question 3

A solid steel cube constrained on all six faces is heated so that the temperature rises uniformly by. If the thermal coefficient of the material is Young's modulus is E and the Poisson's ratio is, the thermal stress developed in the cube due to heating is

• A
• B
• C
• D

Question 4

Universal Testing Machine can be used to perform tests on:

• ASpring
• BSteel samples
• CElectrical cables samples
• DAll of above

Question 5

A metal rod of initial length L_o is subjected to a drawing process. The length of the rod at any instant is given by the expression, L(t)= L_o (1+t²) , where t is the time in minutes. The true strain rate (in min^-1) at the end of one minute is ________.

• A3
• B1
• C6
• D4

Question 6

The stress is proportional to strain upto the proportional limit, which is the law indicating that?

• ASnells law
• BHookes law
• CYoung modulus
• DBulk Modulus

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