Applied Mechanics and Design [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 68 - 71 of 82

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Question 68

Applied Mechanics and Design
Stress and Strain

Appeared in Year: 2019

Question

MCQ▾

A plane-strain compression (forging) of a block is shown in the figure. The strain in the z-direction is zero. The yield strength in uniaxial tension/compression of the material of the block is 300 MPa and it follows the Tresca (maximum shear stress) criterion. Assume that the entire block has started yielding. At a point where MPa (compressive) and , the stress component is

A Plane-Strain Compression

Choices

Choice (4)Response

a.

260 MPa (compressive)

b.

340 MPa (compressive)

c.

340 MPa (tensile)

d.

260 MPa (tensile)

Question 69

Applied Mechanics and Design
Effect of Damping

Appeared in Year: 2020

Question

MCQ▾

The equation of motion of a spring-mass-damper system is given by . The damping factor for the system is

Choices

Choice (4)Response

a.

2

b.

0.5

c.

3

d.

0.25

Question 70

Applied Mechanics and Design
Trusses and Frames

Appeared in Year: 2019

Question

Numeric Answer▾

A truss is composed of members AB, BC, CD, AD and BD, as shown in the figure. A vertical load of 10 kN is applied at point D. The magnitude of force (in kN) in the member BC is ________

A Truss is Composed of Members AB, BC, CD, AD

Question 71

Applied Mechanics and Design
Stress and Strain

Appeared in Year: 2019

Question

Numeric Answer▾

In a UTM experiment, a sample of length 100 mm, was loaded in tension until failure. The failure load was 40 kN. The displacement, measured using the cross-head motion, at failure, was 15 mm. The compliance of the UTM is constant and is given by m/N. The strain at failure in the sample is ________ % .

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