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A single-phase source is applied to a two-terminal, passive circuit with equivalent impedance
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Chapter 2 Solutions
POWER SYS. ANALYSIS+DESIGN
- A 3-phase identical load is connected in delta and consist of a resistance of 160 n and an inductance of 0.382 H in each phase. This load is supplied by 3-phase system of 5 kV, 50 Hz Find: a) The line current b) The active power c) The reactive power d) Tne apparent powerarrow_forwardAn impedance coil is connected in parallel with a capacitance C of 12.5 μF. The input voltage to the circuit is 100 V at 31.8 Hz. The phase angle between the two branch currents (I1 and I2) is 120° and the current in the first branch is I1 = 0.5A. Determine the following:a) the power factorb) the value of conductance (G in mƱ) and susceptance (B in Ʊ)c) total admittancearrow_forwardConsider the circuit shown in (Figure 1). Suppose that RRR = 160 ΩΩ and CCC = 12 μFμF. a) Find the phasor current I. Enter your answer using polar notation. b) Find the power delivered by the source and the reactive power delivered by the source. c) Find the apparent power delivered by the source and the power factorarrow_forward
- Three Impedances each of (13 -j16) ohm are connected in mesh across a three-phase 405V ac supply. Determine the phase current, line current, active power, reactive power and apparent power drawn from supply. Current (Ip) phase Line current Teal power reactive powet Apparent powerarrow_forwardThe impedance ZL in the circuit is adjusted for maximum average power transfer to ZL. The internal impedance of the sinusoidal voltage source is 4+j7 Ω. 1. a) What is the maximum average power delivered to ZL?2. b) What percentage of the average power delivered to the lineartransformer is delivered to ZL?arrow_forwardSuppose an AC generator with V(t) = (150V)sin(100t) is connected to a series LCR circuit with R = 40 Ohm, L= 80 mH, and C = 500 microFarad, as shown in the figure. Calculate the maximum voltage across the resistor (VR0)? A. 11.52 V B. 6.12 V C. 6.31 V D. 4.12 Varrow_forward
- A single phase circuit has an apparent power of 5 kVA and a reactive power of 4 kVAr. Then find (i) power factor (ii) active power (iii) resistance of the circuit when the applied voltage is 200 V.arrow_forwardFor a sinusoidal voltage source with |V | = 100 V, the instantaneous power p(t) into a network N has a maximum value of 1707W and a minimum value of -293 W. 1. Find a possible series RL circuit equivalent to N. 2. Find S = P + jQ into N. 3. Find the maximum instantaneous power into L and compare with Q.arrow_forwardProblem 2 For the system shown below: a) Find the power delivered to each element. b) Find the reactive power for each element. c) find the power, reactive power, and apparent power delivered by the source. d) Find the power factor seen by the source and state whether it is leading or lagging. ZR₂ Is Vs = 20 √2 210° V ZRI 25 Ω Zc '10 Ω 8 Ω Z₁ 6Ωarrow_forward
- 4. Two circuits connected in parallel take alternating currents which can be expressed trigonometrically as i = 17 sin 314t amperes and i:= 15 sin (314t + 7/4) amperes. Using the Parallelogram Law, a) draw the phasor diagram for the current b) determine the phasor sum or resultant current, it t c) calculate the phase angle, for the resultant current.arrow_forwardHelp me pleasearrow_forwardThree circuit elements A = 25 + j0; B = 0 + j4; and C= 0 - j10. Should the three be connected in series, solve for the total impedance, instantaneous current, and voltage across each element.arrow_forward
- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning