An inductive load is controlled by an impulse commutation chopper in Fig.1 and peak loadcurrent IL-450A at a supply voltage of 220V. The chopping frequency f=275 Hz,commutation capacitor C=60μF and reversing inductance Lm=20μH.The source inductanceLs=8μH, determine :td tctr=tc+tda) peak Capacitor discharge Current. b) Circuit turn off time. c) Commutation time. d) Themaximum instantaneous capacitor voltage.Vects = Vs+ ILLSLs000002aCicT₁iTIILT₂FWDLOADVooooooLLD₁fig1I

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Answered: An inductive load is controlled by an…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A cable test unit is required to test cables of 5000 pf at 200 kV. The testing transformer available is 230 V/50 kV, 15 kVA with 2.5% resistance and 6% reactances. Determine the inductance required for resonant testing and input voltage to the testing transformer. Assume the resistance of inductor and leads to be 2.5%.
A step-down chopper is to be used to supply power from a 600-V overhead wire to the commutator motor on a trolley bus. The motor may be mod- eled as a generated direct voltage in series with a resistance of 0.2 and an inductance of 25 mH. The frequency of the chopper is set at 500 Hz. (a) When the bus is stopped, what should be the ON time of the chopper to provide a motor current of 150 A? (b) What is the maximum possible generated voltage of the motor for which a current of 150 A can be supplied? (c) What is the average value of the supply current for the conditions of (a) and (b)? បទៅនឹងរស់របស (d) If the motor current is to be continuous, what should be its minimum. value?
thank you can you hand write clear please
21. A six-pulse SCR bridge for a three-phase source draws power from a 500 V, 50 Hz line (the volt- age is specified as the RMS line-to-line potential, as is standard in three-phase practice). The rec- tifier supplies a large dc motor. The motor has series inductance La = 0.4 mH and series resis- tance R₁ = 5 ms. The internal voltage Vg = kw, where k is a field flux constant equal to 3 V. s/rad, and w is the shaft speed in rad/s. The shaft torque is Tekia, where ia is the motor current. It is desired to operate this motor with a 250 A current limit to provide a controlled acceleration at start-up. Determine the SCR phase delay angle as a function of motor speed to enforce a 250 A current.
A boost converter has an input voltage Vb=5V. The average load current is lo=0.5A. The switching frequency is 25 kHz. Suppose that a regulator is added (L=0.15 mH and C=0.22 mF) and that the current is continuous. If the average output voltage is Vo =15V, then the ripple current of the inductor delta() is equal to: Select one: a. 1.41A b. 0.56A O c. None of these d. 0.89A
Letter d, e, f, g, h
A chopper circuit has an inductive load of 2ohm resistance and 10mH inductance. If the source voltage is 20 V and the frequency of the chopper is set to 100Hz and the on-time to 5 ms. Determine the average voltage and current, maximum and minimum load currents.
to to gribai viming or gaiviqque tous onil odt til we = A three-phase, full-wave half-controlled rectifier bridge circuit is operating at a delay angle a 67° when supplying full power. The per-phase inductance of the coupled transformer is 2 mH. The input voltage has an rms magnitude of 230 V per phase at 50 Hz. The load current in the d.c. side is 15 A at 200 V. It is required to: EI بلد (a) Obtain the drop in the d.c. voltage due to current overlap. (b) Calculate the rms secondary voltage of the transformer. (c) Calculate the overlap angle. (d) Obtain the recovery angle while the converter in operating in the 10 za inversion mode with 15 A, 200 V d.c. input. (e) Obtain the firing angle for the conditions in (d). giys [Ans: (a) 4.5 V, (b) 450 V, (c) 1.06°, (d) 67.14°, (e) 111.8°] ALE
A capacitor C is connected in series with a 400 resistor across a supply of frequency 60 Hz. A current of 3 A flows and the circuit impedance is 500. Calculate: (a) the value of capacitance, C, (b) the supply voltage, (c) the phase angle between the supply voltage and current, (d) the p.d. across the resistor, and (e) the p.d. across the capacitor. Draw the Phasor diagram.
please include working
b) A capacitor C is connected in series with a 40 O resistor across a supply of frequency 60 Hz. A current of 3A flows and the circuit impedance is 50 N, Calculate: (i) the value of capacitance, C, (ii) the supply voltage, (ii) the phase angle between the supply voltage and current, (iv) the p.d. across the resistor, (v) the p.d. across the capacitor.
7. A resistor that draws 12A, a 79.618mH inductor that draws 16A, a resistor of unknown value, and an inductor of unknown value are parallel connected to a 60HZ source. Total circuit current is 56.347A and circuit power factor is 78.088%. The inductors have negligible resistance. Find: A. Circuit voltage: B. Circuit impedance: C. Circuit apparent power: D. Circuit phase angle (indicate lead or lag): E. Value of the unknown inductor: F. Value of the unknown resistor: G Total true power: H. Total reactive power: I. Current drawn by the unknown inductor: J. Current drawn by the unknown resistor:

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