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GATE 2020: Strength of Materials Rapid Quiz 1 (App update required to attempt this test)

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Question 1

A compression spring of wire diameter 5mm having 8 active coils. The mean coil diameter and free length are given as 20mm and 50mm respectively. To increase the stiffness of the spring by 8 times, the mean coil diameter of the spring is

Question 2

For a deformable engineering material, the ratio of elastic modulus E and bulk modulus K is 0.8. What will be the ratio of Youngs modulus E and rigidity modulus G?

Question 3

If the beam shown in the figure is to have zero bending moment at its middle point, the overhang X should be _____________.

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Question 4

A 40 mm diameter shaft is driven at 10 Hz by a motor delivering 30 KW of power. The maximum shear stress in the shaft is

Question 5

A rod of 50mm diameter and 1000mm length is hinged at both of its ends. The elastic modulus is 150 GPa and coefficient of linear expansion is 15×10^-6/℃ . The temperature rise that wil be sufficient to buckle the rod will be ___________.

Question 6

At a point in a material there are two direct stresses of 60 MPa tensile and 50 MPa compressive acting at right angles to each other. The greatest principal stress in the material is limited to 125 MPa in tension. What will be maximum shearing stress to which the material can be subjected on the given plane __________.

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ESE & GATE ME Strength of Materials

Jun 26ESE & GATE ME