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Past Year Questions: Mohr's Circle - Mechanical Engineering MCQ


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6 Questions MCQ Test - Past Year Questions: Mohr's Circle

Past Year Questions: Mohr's Circle for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Past Year Questions: Mohr's Circle questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Past Year Questions: Mohr's Circle MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Past Year Questions: Mohr's Circle below.
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Past Year Questions: Mohr's Circle - Question 1

The state of stress at a point P in a two dimensional loading is such that the Mohr's circle is a point located at 175 MPa on the positive normal stress axis.
The maximum and minimum principal stresses respectively from the Mohr's circle are

[2003]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 1

Mohr’s Circle equation

where σ = principle stress; t = shear stress According to question,

Past Year Questions: Mohr's Circle - Question 2

The state of stress at a point P in a two dimensional loading is such that the Mohr's circle is a point located at 175 MPa on the positive normal stress axis.
The directions of maximum and minimum principal stresses at the point P from the Mohr's circle are

[2003]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 2

Since Mohr’s circle is a point, hence the direction of maximum and minimum principal stress of point P is in all direction.

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Past Year Questions: Mohr's Circle - Question 3

The figure shows the state of stress at a certain point in a stressed body. The magnitudes of normal stresses in the x and y directions are 100 MPa and 20 MPa respectively. The radius of Mohr's stress circle representing this state of stress is

[2004]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 3



∴ Radius of Mohr’s circle = 60 MPa

Past Year Questions: Mohr's Circle - Question 4

The Mohr's circle of plane stress for a point in a body is shown. The design is to be done on the basis of the maximum shear stress theory for yielding. Then, yielding will just begin if the designer chooses a ductile material whose yield strength is

[2005]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 4

Applying maximum shear stress theory

∴ 

Past Year Questions: Mohr's Circle - Question 5

A two dimensional fluid element rotates like a rigid body. At a point within the element, the pressure is 1 unit. Radius of the Mohr's circle, characterizing the state at that point, is

[2008]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 5

Since the pressure in fluid is of hydrodynamic type

∴ p1= p2 = p3 = 1
Hence radius of Mohr's circle is zero.

Past Year Questions: Mohr's Circle - Question 6

The state of stress at a point under plane stress condition is
σxx = 40 MPa, σyy = 100 MPa and σxy  =40 MPa
The radius of Mohr's circle representing the given state of stress in MPa is

[2012]

Detailed Solution for Past Year Questions: Mohr's Circle - Question 6

Here,

Radius of Mohr’s circle = 

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