(26۱:۱۳ ۱ ص | ۲۷,۵ك.بث+968 9482 9554الآنQ20.A circuit comprises a coil of inductance 113.68mH, resistance 30£ in series with a variablecapacitor. The supply voltage is 240V at 70 Hz. Determine:i.If the impedance of circuit is 502, determine current and capacitive reactance, Xe.ii.Calculate reactive power, apparent power and draw neat phasor diagram.

Answered: Image /qna-images/answer/56bb9f9f-146b-4ac4-b7f0-efea12fc5462.jpg

A circuit comprises a coil of inductance 113.68mH, resistance 3on in series with a variable capacitor. The supply voltage is 240V at 70 Hz. Determine: If the impedance of circuit is 5042, determine current and capacitive reactance, Xe. ii. Calculate reactive power, apparent power and draw neat phasor diagram.

A circuit comprises a coil of inductance 113.68mH, resistance 3on in series with a variable capacitor. The supply voltage is 240V at 70 Hz. Determine: If the impedance of circuit is 5042, determine current and capacitive reactance, Xe. ii. Calculate reactive power, apparent power and draw neat phasor diagram.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

See similar textbooks

Similar questions

You make a circuit with a function generator at 1.02 kHz battery, a 43.0 Q resistor, and a capacitor in series. If the current in the circuit is 2.87 mA and the RMS voltage across the capacitor is 1.34 volts, what is the reactance of the capacitor in ohms (Enter answer as an integer. Do not enter unit.) AClick Submit to complete this assessment. 4Question 2 of 2
A 2.5A current is flowing in a series circuit comprises of a coil with inductance 15mH and resistance 102 and a variable capacitor. The supply voltage is 120V at 60 Hz. Estimate the following: i. The capacitance and impedance. ii. Angle between supply voltage and current. ii. The reactive power consumed
An rms voltage of 22.2 V with a frequencyof 1.00 kHz is applied to a 0.290-mH inductor. (a) What is the rmscurrent in this circuit? (b) By what factor does the current changeif the frequency of the voltage is doubled? (c) Calculate the current for a frequency of 2.00 kHz
A Star 3Phase source with phase voltage of 400V at 50HZ is connected to a delta connected 3Phase AC Motor. The transmisson line resistance from source to load terminal is 1 Ohm. The internal resistance of each winding of motor is 9 Ohm and the inductance of each coil is 38.2 mH. What is the true power delivered to load? O A) 13099 B) 14999 O C) 15099 O D) None
10. Two reactors are connected in series across a 10 V, 10 kHz source. They are spaced so that there is no interaction between their electromagnetic fields. Coil 1 has an effective resistance of 200 22 and an inductance of 200 mH. Coil 2 has an effective resistance of 300 2 and an inductance of 10 mH. Determine: a. the total resistance, in ohms. b. the total inductive reactance, in ohms. c. the total impedance, in ohms. d. the current, in milliamperes. e. the total true power expended in the series circuit, in watts.
11. An inductor is connected to a 60-Hz circuit. The inductive reactance is 75.4 2. What is the inductance of the inductor? a. 0.2 H b. 5 H c. 284 H d. 4524 H
An induction motor draws 45 kW at a 73% power factor from a 16 AC line. a) What is the phase angle? b) What is the reactive power? c) What is the apparent power? A E A/ d) How many standard 15 kVAR and/or 25 kVAR capacitors are needed to improve the power factor without producing a leading power factor? A 15 kV AR capacitor(s) A/25 kVAR capacitor(s) e) What is the new power factor (round to three decimal spots)?
58. Two capacitors, a 20 µF and a 30 µF, are connected in series to a 60-Hz source. What is the total capacitive reactance? a. 117.96 N b. 221.04 N c. 253.05 N d. 333.16 N
When a resistor is connected across the terminals of an ac generator (117 V) that has a fixed frequency, there is a current of 0.332 A in the resistor. When an inductor is connected across the terminals of the same generator, there is a current of 0.365 A in the inductor. When both the resistor and the inductor are connected in series between the terminals of this generator, what is (a) the impedance of the series combination and (b) the phase angle between the current and the voltage of the generator? Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise. (a) Number (b) Number Buda i Vrms R Irms.R Circuit 1 Units Units Vrms. Irms, L Circuit 2 > L Vrms R www Circuit 3
QUESTION 3 An inductor, a capacitor, and a resistor are connected in parallel with a function generator. The inductor draws 100mA RMS, the capacitor draws 150mA RMS, and the resistor draws 200mA RMS. Find the magnitude of the total current. O 450mA RMS O 544mA RMS O 352mA RMS O 206mA RMS
2, In a circuit, the capacitance of a capacitor is 3.2 microfarads and the rms voltage of the generator is 50 volts. Frequency (a) 100 Hz and (b) what is the rms current in the circuit when it is 1000 Hz?
A 43mH coil in series with a 1200 ohm resistor across a sine wave ac voltage source with a frequency of 6 kHz. The total impedance for the circuit is O 1620 46.5° ohm esc 2017 53.5° ohm 1200 53.5° ohm 2820 46.5° ohm ! 1 Q ← 2 W #3 C E $ 54 R G Search or type URL % 5 MacBook Pro T A 6 Y & 7 ☆ U * 8 + 1 ( 9 ( 0 ) 0 4) P + O = [ delete