A solid steel shaft is to be designed to transmit 750 kW at 1,500 revolutions per minute. The steel selected is an AISI 1030, cold drawn (CD) steel. The shaft is 1 m long. Assume that the bending load on the shaft is negligible. (a) Using a factor of safety of 1.5, design the diameter of the shaft. (b) If instead of using a solid shaft, a hollow shaft with the inside diameter 0.8 times the outside diameter is used, will there be any weight saving

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?