Question

The torsional rigidity of a shaft is expressed by the-

• A. Torque required to produce a twist of one radian per unit length of shaft
• B. Maximum torque the shaft can transit
• C. Maximum power it can transit at the fastest speed
• D. Fastest speed it can run

Answer 1

Answer:

A. Torque required to produce a twist of one radian per unit length of shaft

Torsional rigidity of a shaft is expressed as torque per unit angular twist per unit length. This is also known as torsional stiffness (k) and is given by k = GJ / L The parameter G.J is called torsional rigidity of the shaft and is given by (T / θ / L where T is the torque, 8 is the angular twist and L is the length of the shaft.