Engineering, 30.11.2019 00:31, lamwil9432
Abalanced bank of delta-connected capacitors is connected in parallel with the load described in assessment problemthe effect is to place a capacitor in parallel with the load in each phase. the line voltage at the terminals of the load thusremains at 2450 v. the circuit is operating at a frequency of 60 hz. the capacitors are adjusted so that the magnitude ofthe line current feeding the parallel combination of the load and capacitor bank is at its minimum. a) what is the size of each capacitor in microfarads? b) repeat (a) for wye-connected capacitorsc) what is the magnitude of the line current? problemthe magnitude of the line voltage at the terminals of a balanced y-connected load is 6600 v. the load impedance is 240 —170 fl/¢. the load is fed from a line that has an impedance of 0.5 + i4 q/¢,a) what is the magnitude of the line current? b) what is the magnitude of the line voltage at the source?
Answers: 2
Engineering, 03.07.2019 14:10, BardiFan
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 19:10, jennymares
Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m
Answers: 1
Abalanced bank of delta-connected capacitors is connected in parallel with the load described in ass...
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