In a ring beam subjected to uniformly distributed load i) shear force at mid span is zero ii) shear force at mid span is maximum iii) torsion at mid span is zero iv) torsion at mid span is maximum The correct answer is A. (i) and (iii) B. (i) and (iv) C. (ii) and (iii) D. (ii) and (iv)

The correct answer is A. (i) and (iii).

A ring beam is a type of beam that is circular in shape. It is subjected to a uniformly distributed load, which means that the load is evenly distributed across the entire length of the beam. The shear force at mid span is zero because the load is evenly distributed and there is no net force acting on the beam at that point. The torsion at mid span is also zero because the beam is symmetrical and there is no net torque acting on the beam at that point.

Option (ii) is incorrect because the shear force at mid span is zero. Option (iii) is correct because the torsion at mid span is zero. Option (iv) is incorrect because the torsion at mid span is zero.