5) Non minimum phase systems are also non causal. True False
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Q: 2- The Purpose of using Unbalanced Three-phase Systems: Jji
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Q: 2- The Purpose of using Unbalanced Three-phase Systems:
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- Discuss Fully the various methods available for transforming 3-phase voltages to higher or lower 3-phase voltages. Highlight the advantages and disadvantages of each. Include the connection diagrams.Which of the following statements is/are true? (A In purely inductive circuit, the current leads voltage. (B) In purely resistive circuit, the current lags voltage. C In purely resistive circuit, the current is in phase with voltage. D In purely capacitive circuit, the voltage lags current.please solve for nodal stress method. (if it is possible to apply supernodes)
- What is the main direct cause of reactive power in AC system?A. Resistance of transmission linesB. Inductance and capacitance in the loadsC. Ideal transformer connected in the systemD. Power produced by generator2. “Reactive power in a system is dissipated generally as thermal energy?”A. TRUEB. FALSE3. Which of the following statements are correct for three phase circuit:A. Sum of all the three phase currents is zero in unbalanced networkB. Total power transfer to load is constant with timeC. Neutral conductor is same size in terms of material used as in single phase conductorsD. Net apparent power consumed is equal to real powerPlease help with this balanced three-phase circuit problem.Discuss how delta connection is achieved in three-phase systems?
- A parallel connection of a RL branch with a C branch is connected across a 100V AC mains. At first R = 10 ohms, L = 20mH and frequency of 1000rad / s, the current measured is 2.2361A at 89.44 leading power factor. A) Determine the initial capacitance. B) However, a fault occurs on the capacitor branch making its capacitance 20% lower and a resistance of 5 ohms is detected. If this faulty circuit is rerun but at a frequency of 500 rad / s, determine the new current that will flow through the circuit.Q2 (a) Three-phase generator consist of three set of single-phase generators, with voltages equal in magnitude but differing in phase angle by 120° apart. (i) Sketch phasor diagram of the three-phase voltages VA, VB and Vc (ii) Plot the three-phase voltages waveform in Q2(a)(i) in single plot.Schering Bridge is used to find ____________. a. capacitance b. pressure c. inductance d. frequency
- Power in a three phase delta system with balanced load is equal to (Sqrt (3)) (VL) (IL) (p.f.) (Sqrt (3)) (Vph) (Iph) (p.f.) (Sqrt (3)) (VL) (Iph) (p.f.) O (Sqrt (3)) (Vph) (IL) (p.f.)What applications (uses) for 3-phase open Delta systems?8687 Conductance is always expressed as a real number and comprised the real part of admittance equation. True False Reactance does vary according to the frequency. O True False