Civil Engineering - Theory of Structures - Discussion


Pick up the incorrect statement from the following : The torsional resistance of a shaft is directly proportional to

[A]. modulus of rigidity
[B]. angle of twist
[C]. reciprocal of the length of the shaft
[D]. moment of inertia of the shaft section.

Answer: Option D


No answer description available for this question.

Mohan Kumar said: (Jan 27, 2017)  
We know T/I=C0/L
T/0 = CI/L
So, T is proportional to the moment of inertia of shaft.

Sukumar Maloth said: (Apr 7, 2017)  
Here T/radius = G * TITA/L , so T is directly proportional to TITA.

Keshav Raidas said: (Jun 9, 2017)  
According to me, it is a polar moment of inertia.

Rajendra said: (Sep 20, 2019)  
T/J is a Polar moment of inertia.

Manoj said: (Aug 2, 2020)  
But it directy propotional to shearmodulus also.

Kavish Srivastava said: (Aug 25, 2020)  
Because Torsional resistance is proportional to Polar moment of inertia (J) and has no relation with the moment of inertia (I).

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