# Civil Engineering - Theory of Structures - Discussion

Discussion Forum : Theory of Structures - Section 1 (Q.No. 49)
49.
Pick up the incorrect statement from the following : The torsional resistance of a shaft is directly proportional to
modulus of rigidity
angle of twist
reciprocal of the length of the shaft
moment of inertia of the shaft section.
Explanation:
No answer description is available. Let's discuss.
Discussion:
6 comments Page 1 of 1.

Kavish Srivastava said:   4 years ago
Because Torsional resistance is proportional to Polar moment of inertia (J) and has no relation with the moment of inertia (I).

Mohan kumar said:   7 years ago
We know T/I=C0/L
T/0 = CI/L
So, T is proportional to the moment of inertia of shaft.

SUKUMAR MALOTH said:   7 years ago
Here T/radius = G * TITA/L , so T is directly proportional to TITA.

Keshav raidas said:   7 years ago
According to me, it is a polar moment of inertia.

Manoj said:   4 years ago
But it directy propotional to shearmodulus also.

Rajendra said:   5 years ago
T/J is a Polar moment of inertia.