An AC load draws 5 kW of power at a lagging PF of 0.8 from a 60 Hz power line. If the effective voltage drawn by the load is 120 Vrms, calculate the value of capacitor needed to correct the given load to a PF of 1. Express your answer in micro-Farads (µF). 1 micro = 10-6

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Apure substance is a)-mixture of various chemical elements or compounds b)-substance that has a fixed chemical composition throughout c)-mixture that is homogeneous (such as air) d)-all the answers

In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?