
Module 2 (4)
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Education
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University
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Practice Problem
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Hard
Mechanics of Materials
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the case of a triangular section, the shear stress is maximum at the:
Neutral axis
Height of 2h/3
Height of h/2
Centre of gravity
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A circular beam section is subjected to a shear force of 40π kN. The maximum shear stress allowed in the material is 6 MPa. Calculate the safe diameter of the section, assuming a factor of safety equal to 2.
266.66 mm
133.33 mm
522.22 mm
300 mm
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A rectangular beam of 500 mm wide is subjected to maximum shear force of 250kN, the corresponding maximum shear stress been 3 N/mm2. The depth of the beam is equal to ______
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The yield strength of bolt material is 300 MPa and factor of safety is 2.5. What is the maximum principal stress using maximum principal stress theory ?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 20N/mm²Find the maximum amount of shear stress to which the body is subjected.
22.36 N/mm²
20.50 N/mm²
28.25 N/mm²
25.00 N/mm²
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a material where the shear stress is zero, if the normal stresses are σx=100σx=100 MPa and σy=50σy=50 MPa, what are the principal stresses?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
if σx=150 MPa ,σy=50σy=50 MPa, τxy=40τxy=40 MPa
if σx=150 MPa ,σy=50σy=50 MPa, τxy=40τxy=40 MPa
What is the maximum shear stress?
70 MPa
60. MPa
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