A cylindrical elastic body subjected to pure torsion about its axis develops:

1.  Tensile stress in a direction 45° to the axis

2.  No tensile or compressive stress

3.  Maximum shear stress along the axis of the shaft

4.  Maximum shear stress at 45° to the axis

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4
Correct Answer :

Tensile stress in a direction 45° to the axis


Explanation :
No Explanation available for this question

The three-dimensional state of stress at a point is given by: The shear stress in the x-y plane at the same point is then equal to

1.  Zero MN/m2

2.  -10 MN/m2

3.  10 MN/m2

4.  20 MN/m2

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4
Correct Answer :

10 MN/m2


Explanation :
No Explanation available for this question

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

1.  40

2.   50

3.  60

4.  100

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4
Correct Answer :

50


Explanation :
No Explanation available for this question

For a simply supporting beam on two end supports the Bending Moment is maximum:

1.  Usually on the supports

2.  Always at mid span

3.  Where there is no shear Force

4.  Where the deflection is maximum

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4
Correct Answer :

Where there is no shear Force


Explanation :
No Explanation available for this question

A simply supported beam of length L is subjected to a varying distributed load sin (3πx/L)Nm-1, where the distance x is measured from the left support. The magnitude of the vertical reaction force in N at the left support is

1.  Zero

2.  L/3π

3.  L/π

4.  2L/π

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4
Correct Answer :

L/3π


Explanation :
No Explanation available for this question

A solid circular shaft needs to be designated to transmit a torque of 50 Nm. If the allowable shear stress of the material is 140 Mps, assuming a factor of safety of 2, the minimum allowable design diameter in mm is

1.  8

2.   16

3.  24

4.  32

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4
Correct Answer :

16


Explanation :
No Explanation available for this question

A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the young’s modules is E. The magnitude of the maximum deflection is

1.   ML2/2EI

2.  ML2/EI

3.  2ML2/EI

4.  4ML2/EI

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4
Correct Answer :

ML2/2EI


Explanation :
No Explanation available for this question

Shear stress distribution diagram of a beam of rectangular cross-section, subjected to transverse loading will be

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

A circular shaft subjected to torsion undergoes a twist of 10 in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2 and if modulus of rigidity G= 0.8×106, then the radius of the shaft should be

1.  π/18

2.  π/27

3.  18/π

4.  27/π

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4
Correct Answer :

27/π


Explanation :
No Explanation available for this question

Which one of the following combinations of angles will carry the maximum load as a column

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question
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