After full analysis of a solid steel shaft consideringdeflection, strength and vibrations, we come to know that the shaftdesign is limited by deflection, which option as a designer wouldyou pursue, provide reasoningfor your choice.
(a)Increase the shaft diameter but make the shaft hollow whilekeeping the weight constant
(b)Keep the shaft diameter constant and select a shaft withhigher strength
(c)Increase the shaft diameter to increase the critical speedand select a steel with higher strength
(d)Increase the shaft diameter and use a cheaper steel
(e)Increase the shaft diameter to increase the critical speedand reduce deflection as well as selecting a steel
with higher strength to improve the strength.