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Concept explainers
Consider a load impedance of
(a) Develop an expression for the reactive power Q in terms of
(b) Let the instantaneous current be
(c) Comment on the average real power P supplied to the inductor and the instantaneous power supplied.
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Chapter 2 Solutions
Power System Analysis and Design (MindTap Course List)
- Match with column A by choosing correct answer from column B for the below case. An alternating voltage AV = 100 sin 30 t is applied across a LR series circuit which has R = 10 2 and X,= 24 2 Angular frequency of alternating Voltage (w) Choose.. Choose.. The impedance of the circuit is 34 Q rms current in the Circuit, I rms 30 rad/sec The power factor of the Circuit 0.385 260. 0.417 Question 8 Not yet answered P Flag question Marked 5.44 Aarrow_forwardFor the given circuit below a. Calculate E, IR, and IL, in phasor form.b. Calculate the total power factor (leading or lagging) and the average power delivered to the circuit.c. Draw the admittance diagram and draw the phasor diagram of the currents Is, IR, and IL, and the voltage E.arrow_forwardPlease help with parts d and e.arrow_forward
- Find the phasor voltage V, in the circuit shown in the following Figure. Assume an ideal transformer in the circuit. The turns ratio is n=2/3. Hint: you may need to first work out the input impedance, Z1, of the terminated transformer. 30 Ω j20 Q 5Ω 1:n 80/-50 V(* V2 j8 0 V Ideal Z1arrow_forwardCan you please answer all parts?arrow_forwardXL=62 R1=40 Is R2=90 + + E1=100V20° AC R3=80 V3 Xc=72 ZT a. Calculate the total impedance (ZT). b. Compute the source current (Is). c. Find the current across the capacitor Xc. d. Calculate the voltage across the resistor R3. e. Find the average power delivered to the circuit (PT). f. Find the total power factor (Fp).arrow_forward
- Pls help me with the part E: What is the Total Impedance of the circuit?arrow_forwardQuestion: (a) Find the input impedance. Zin, of the circuit shown below by using the concept of reflected impedance or other method of your choice. (b) If a voltage source of 5 V rms is connected to the input of the circuit, what is the current supplied by the source? j10 0 j40 0 25 0 80 wwe j30 Q j20 Q -j60 68°F Sunnyarrow_forwardThe instantaneous value of voltage in an a.c. circuit at any time t seconds is given by v = 100 sin (50zt -0.523)V. Find (a) the phase angle (b) the voltage when t=8ms (c) the time in the first eycle when the voltage is 60V.arrow_forward
- Circuitsarrow_forwardPlease answer quickly The impedance (Z) of a circuit is technically a phasor because it does not correspond to a sinusoidally varrying quantity. True False Resistance is varying in a circuit and does vary according to the frequency. True False "In series-connected ac circuit, the value of the equivalent admittance of the circuit is equal to the phasor sum of the reciprocal of the individual admittances. " True Falsearrow_forwardPlease answer letters E and Farrow_forward
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