Concept explainers
Convert the following instantaneous currents to phasors, using
(a)
(b)
(c)
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Chapter 2 Solutions
Power System Analysis and Design (MindTap Course List)
- 2. Given: v(t) = 325.269 sin( 376.991t + 36.87 ) V Find : e. V when t = 5us f. V when o = 30° g. The first angle after = 0 when V = -100V h. The first time after t 0 when V = -100V Answer: e. V = 195.652 V f. V= 299.126 V g. 0 = 161.035 h. t= 7.455 msecarrow_forwardDetermine the amplitude of equivalent impedance seen by the source V, in the following circuit when: Vs(t)= 18cos(396t+125 °) V R₁ = 65 R₂ = 70 2 L = 130 mH C = 63 μF R3 = 36 Vs + R₁ L (Round off to two decimal places.) R₂ C www R3arrow_forwardTransform the function to a positivevalue.E(t) = -10 cos (4t + 75)arrow_forward
- Find the two elements in a series circuit (i.e., R and L, or R and C, or L and C), given that i(t) = 4 cos 120at + 6. A and v(t) IT = 120 sin 120ät + V.arrow_forwardSolve the following for ALL circuits. Show the summary of your answers at the end of each problem. All answers should be in polar form! a. Total Current b. Individual Currents c. Individual Voltages d. True/Real power e. Reactive power f. Apparent power 1. Circuit 1 (freq=200 Hz) 10 K www 10 COSwt 100 100 LA HE 10 pFarrow_forwardDetermine the phase angles by which vi(t) leads in (t) and v₁(t) leads iz(t), where v₁(t) = 4 sin (377t +25⁰) V i₁(t) = 0.05 cos (377t - 20⁰) A iz(t) = -0.1 sin (377t + 45⁰) Aarrow_forward
- b) Find the time varying cos function for the following phasors that have angular frequency of co: i) +1+12√√3 6/60° √12+12 , ii) 2 1+i√√3arrow_forwardThe voltage phasor is Vs = 260 ∠15° V and the total impedance of the circuit is 15+j25 Ω . Calculate the magnitude of the phasor Is. enter your answer in A and round to two decimal places.arrow_forwardSomeone tried the question but he didn't do part (d).arrow_forward
- What is the phasor representation of I(t)=I∘cos(ωt) at half-period? Explain. A.← B.↑ C.→ D.↗The links below show different answers. Defend yours.a. https://www.bartleby.com/questions-and-answers/what-is-the-phasor-representation-ofiticoswtat-half-period/970f7f4b-f43d-4ff2-9be5-0e61b7f4ffebb. https://www.bartleby.com/questions-and-answers/what-is-the-phasor-representation-of-it-coswt-at-half-period-o-a.-o-b.-o-c.-o-d.-x/8240eeab-f494-45d9-90b0-17809c847a75c. https://www.bartleby.com/questions-and-answers/what-is-the-phasor-representation-of-iticoswt-at-half-period-a.-b.-c.-d./47f627d0-8180-42a7-9186-2ce88402dcd9arrow_forwardThe phasor of the impedance of an AC circuit has no vertical component. What does this mean? there are no reactive components in the AC circuit the resistance of the circuit is equal to the reactance of the reactive components the inductive reactance and capacitive reactance are equal in magnitude there are no inductors in the circuitarrow_forwardSolve the following for ALL circuits. Show the summary of your answers at the end of each problem. All answers should be in polar form! d. True/Real power e. Reactive power f. Apparent power 1. Circuit 1 (freq=200 Hz) 10 COSwt 10 K www 100 100 KH 10 pFarrow_forward
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