The process of inventory management subdivides inventory into a number of categories. Cycle stock inventory is among the most important parts of an overall inventory since it's the first place customer purchases will come from.o determine the cost of cycle stock inventory, a business can use the last-in, first-out method or the first-in, first-out method, which base the price of items in the cycle stock on the most recent or oldest prices paid, respectively.
Energy is required to change the phase of a substance, such as the energy to break the bonds between molecules in a block of ice so it may melt. During a phase change energy my be added or subtracted from a system, but the temperature will not change. The temperature will change only when the phase change has completed.
Take a three phase motor (with three windings, each identical) consuming a given kW. The kW per winding (single phase) has to be the total divided by 3. Similarly a transformer (with three windings, each identical) supplying a given kVA will have each winding supplying a third of the total power. To convert a three phase problem to a single phase problem take the total kW (or kVA) and divide by three. As an example, consider a balanced three phase load consuming 36 kW at a power factor of 0.86 and line to line voltage of 400 V (V LL) : the line to neutral (phase) voltage V LN = 400/â3 = 230 V three phase power is 36 kW, single phase power = 36/3 = 12 kW now simply follow the above single phase method. Easy enough. To find the power given current, multiply by the voltage and then the power factor to convert to W.