Identify the systematic B. I.S designations of three (3) of following ferrous metals by stating the percentages of the constituent elements. i. 45C8 ii. Fe250 iii. XT30Ni4Cr2V65 iv. 37Mn2

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

What is creep? what is stress relaxation?

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.