An impedance of 12 – j7W, an inductor having a susceptance of 0.225 mho, a capacitor having a susceptance of 0.125 mho and a resistance having a conductance of 0.245 mho are all connected in parallel, find the current, power and power factor when the circuit is connected in series with another impedance of 5 + j7 W supplied by E = – 440 cos (wt – 400

An impedance of 12 – j7W, an inductor having a susceptance of 0.225 mho, a capacitor having a susceptance of 0.125 mho and a resistance having a conductance of 0.245 mho are all connected in parallel, find the current, power and power factor when the circuit is connected in series with another impedance of 5 + j7 W supplied by E = – 440 cos (wt – 400

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.17MCQ: Consider the load convention that is used for the RLC elements shown in Figure 2.2 of the text. A....

See similar textbooks

Similar questions

Consider the load convention that is used for the RLC elements shown in Figure 2.2 of the text. A. If one says that an inductor absorbs zero real power and positive reactive power. is it (a) True (b) False B. If one says that a capacitor absorbs zero real power and negative reactive power (or delivers positive reactive power), is it (a) False (b) True C. If one says that a (positive-valued) resistor absorbs (positive) real power and zero reactive power, is it (a) True (b) False
A capacitor and a 30-ohm resistor are connected in series. What is the equation of the resulting current if that capacitor has a capacitance of 80 microfarads and the combination is placed across a power supply whose equation is e = 325 sin (314t)? a.) i(t) = 6.52 sin (314t - 53°) b.) i(t) = 6.52 sin (314t + 53°) c.) i(t) = 6.53 sin (314t + 52°) d.) i(t) = 6.53 sin (314t - 52°)
A resistor'R' with resistance value of 24 ohm, an inductor 'L' with inductance 20mH, and a capacitor 'C' with capacitance 50 micro Farrad are connected in series with a AC voltage v(t) where v(t) = 50 cos (2 vt + 30 degrees) v. Determine the current i(t) and total impedance if the frequency f is i. 60 Hz ii. 400Hz
1 A circuit having a resistance of 12Ω, an inductance of 0.15 H and a capacitance of 100μf in series is connectedacross a 100V, 50Hz supply. Calculate the impedance, current, the phase difference between the current andsupply voltage. 2. Two circuits with impedances of Z1 = 10 + j15Ω and Z2 = 6 – j8Ω are connected in parallel. If the supply current is 20A, what is the power dissipated in each branch?
Three impedances are connected in series across a 100 V, 2 kHzsupply. The impedances comprise:(i) an inductance of 0.45 mH and 2 resistance,(ii) an inductance of 570 µH and 5 resistance, and(iii) a capacitor of capacitance 10 µF and resistance 3 .Assuming no mutual inductive effects between the two inductancescalculate (a) the circuit impedance, (b) the circuit current, (c) thecircuit phase angle and (d) the voltage across each impedance. Drawthe phasor diagram.[(a) 11.12 (b) 8.99 A (c) 25°550 lagging(d) 53.92 V, 78.53 V, 76.46 V]
A series circuit consists of resistance of 10 ohm, an inductance of 200/π mH and capacitance of 1000/π μF . Calculate (a) the current flowing in the circuit if supply voltage is 200 V, 50 Hz, (b) power factor of the circuit, (c) power drawn from the supply. Also draw the phasor diagram.
Give the detailed solution: An inductor L1 is connected in series with a parallel combination of inductor L2 and capacitor C. The impedance of the circuit w = 400 rad/sec is j100 ohms. The circuit is to yield infinite impedance at w = 1,000 rad/sec and zero impedance at w = 2,000 rad/sec. Determine the value of C. Answer: 1.32 microfarad
6) A circuit consisting of a resistor in series with an inductance takes 210W at a power factor of 0.6 from a 50V, 100 Hz supply. the current flowing is I=210/50x(0.6)= 7amps the circuit phase angle, Theta= cos-1(0.6)=53.13 degrees the resistance, R=4.29 ohms please find the following (d) the impedance, (e) the inductance.
A source of 120Ð0o V and impedance (5 + j3)W supplies a load consisting of a variable resistor R in series with a fixed capacitive reactance of 8W. Determine the value of R to give maximum power transfer, and the value of the maximum power. A capacitor has a capacitive reactance of 400W when connected to a 100V, 25Hz supply. Determine its capacitance and the current taken from the supply.
A series connection of a 30-ohm resistor and a 100-mH inductor is connected across 240-V, 60-Hz supply. What will be the resulting equation of the current? a. i(t) = 7.04 sin(377t + 51.49°) b. i(t) = 7.04 sin(377t - 51.49°) c. i(t) = 4.98 sin(377t - 51.49°) d. i(t) = 4.98 sin(377t + 51.49°)
A 6.36 μF capacitor is connected in parallel with a resistance of 500Ω and the combination is connected in series with a 500Ω resistor. The whole circuit is connected across an ac source given by e=300sin(ωt) + 100 sin(3ωt + 30°). If ω = 314 rad/s. find: a)Irms b)Vrms c)total active power d)total power factor e)total reactive power f)total apparent power
(i)Three identical capacitors are connected in delta with 400 V. If the line current is 12 A determine the capacitance of each of the capacitors. If the θ = 600 then calculate the power dissipation in kW when it is connected in STAR (ii) Three coils each having resistance 6  and inductance are connected in star with 415V. If the line current is 30 A, find the value of inductive reactance as well as inductance value. If θ = 450 then calculate the power dissipation in kW when it is conected in delta.