Power in a three phase delta system
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- Please help with this balanced three-phase circuit problem.The p.u. impedance value of an alternator corresponding to base values of 13.2 kV and 30 MVA is 0.2 p.u. Then the p.u. impedance value of an alternator for the new base values of 13.8 kV and 50 MVA is......Problem 2 The circuit diagram of a certain load is presented below. Determine the following: a. The power factor of the load. b. If the load is connected across a 400 Vrms source, determine the real and reactive power consumed by the load. c. From (b), determine the value of the capacitor to be placed in parallel with the load in order to improve the power factor of the load to 95% lagging. From (b), A synchronous motor is installed in parallel with the load to correct the pf. The motor is rated 5 hp operating at 60% efficiency. Assuming that the motor is running at rated power. Determine the apparent power and power factor of the motor in order to improve the load's pf to 95% lagging. 202 500 µF HI + VL -20 mH 5Ω >0.5VL m 15 mH
- A.With the aid of diagram describe Hybrid microgrid B. Discuss the following in the setting up of microgrid systems I- preconditions II- plan of actionsIs it possible to measure the phase-shift angle in an AC single-phase circuit by an indirect method using an ammeter and a voltmeter? - Yes, but an instrument must be added to measure the active resistance of the load. - Yes, but an instrument must be added to measure the active power dissipated by the load. - Yes, but an instrument must be added to measure the frequency.The ............. sequence components are in phase with each other.
- 128, An equipment has an impedance 0.9 p.u. to a base of 20 MVA, 33 kV. To the base of 50 MVA, 11 kV, the p.u. impedance will be (a) 4.7 (c) 0.9 (b) 20.25 (d) 6.75The mutual inductance coupling coefficient standard unit is .. * Ohm Henery O Unit-less MhoWhat is the load factor? What happens when load factor = 1?
- 6.5% ans ex A so kvA. 2o00/20 V, So He single-phase transformar has impedance drof of8% and resistance drop of 4%. Caleulate. The Requlation of the Thams former at full- Load o8 P.s Legging. also find The Power factor at which Voltage requlation will Be Zero. Sols 0.5 leading. s alculate The % Noltege Requlation af atransformar in w hich the Percantage resistance drof is 1% and Percentage dre is 6% when The Power fador is 0.8 lagging ) > unity aMS 38 % ans 1 % (シ→ 0.8 leading . amS - 2.2%When caluating the average power delivered to a bad by an AC sigre, it is not as straightforward as DC. It depere on the difference in phase between the sincecidal voltage across and current through the loadi, and it relates to the RMB values. The average power or enmetimas referred to as the active or real power, is related to the underpirning snusoidal voltage and current by P-Vene Cosy-00 W In this question there is only a resistive load, A-6.00 and the amplitude is 98V. Decame the amplitude of the curent through the load I- Workout the P 96V resistor, 6.80 50Hz V1 R1 6.80 Reset RUN/Stop Electric Potential Power Charge Simulation Speed Charge Flow Current Circuit:For a 500-W carrier modulated toa depth of 80%, find the total power and %P.S. in each of the following forms of AM. a. J3E b. H3E C. DSB