Three similar inductors, each of resistance 10 ohm and inductance 0.019H, are delta-connected to a three-phase,...
Three similar inductors, each of resistance 10 ohm and inductance 0.019H, are delta-connected to a three-phase, 400V, 50Hz sinusoidal supply. Calculate: (i) the value of the line current, (ii) the power fator, (iii) the active power input to the curcuit.
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Three similar inductors, each of resistance 10 ohm and
inductance 0.019H, are delta-connected to a three-phase,...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase 400V, 50 Hz supply. Calculate the inductance of each coil, which when connected in delta to take the same supply voltage and line current, also find the power delivered at unity power factor for both star and delta connected load. (6 Marks)
b) The load connected to a three-phase supply comprises three similar coils connected in star. If...
b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages (4 marks) ii. Total apparent power (1 mark) iii. The impedance of each coil. (2 marks) c) If the coil in Q3(b) are now connected in delta to the same three-phase supply,...
An inductor with an inductance of 500mH is connected in parallel with a resistance of 1000...
An inductor with an inductance of 500mH is connected in parallel with a resistance of 1000 ohm across a 50V 50Hz supply. Calculate the power factor Calculate the true power
A three-phase delta-connected synchronous induction motor is connected to a 415 volt, 50 Hz supply. The...
A three-phase delta-connected synchronous induction motor is connected to a 415 volt, 50 Hz supply. The winding resistance is negligible and the synchronous reactance per phase is 5 ohms. The input power is 20 kW and the motor has a leading power factor of 0.8. Draw the phasor diagram for this machine: ii) use the IXs phasor and the V phasor to construct the phasor for E. iii) measure or calculate the magnitude of E iv) By construction and/or by...
A 480 V, 60 Hz, 4-pole-pair, three-phase, delta-connected induction motor has the following parameters: R1=0.42 Ω,...
A 480 V, 60 Hz, 4-pole-pair, three-phase, delta-connected induction motor has the following parameters: R1=0.42 Ω, R2=0.23 Ω, X1=0.48 Ω, X2=0.29 Ω, Xm=29.71 Ω where: R1 is the stator resistance R2 is the rotor resistance reflected in the stator; X1 is the stator leakage inductance; X2 is the rotor leakage inductance reflected in the stator; Xm is the magnetising inductance; The rotational losses are 2450 W. The motor drives a mechanical load at a speed of...
Alternating Current Circuits Containing Inductance Cirele the letter beside the correct answer Three inductors connected in...
Alternating Current Circuits Containing Inductance Cirele the letter beside the correct answer Three inductors connected in parallel have inductive reactances of 24 Ω, 48 Ω, and 36 Ω. If the inductors are connected to a 60-He line, wha is the sotal inductance of the eircui? A. 00294 11 , 0.34611 C 0 0579 11 D. 0642 11 I. What is the relationship of current and voltage in a inductive circuit The currene lags the voltage by 90 The current leads...
I just need answers to f,g,and h connected motor is connected to Vi-L 120 3T/6 V-rms, 50 Hz three e resistance and inductance of each phase is 8-Ω and 0.04 H, respectively. The PS. A three-phase p...
I just need answers to f,g,and h
connected motor is connected to Vi-L 120 3T/6 V-rms, 50 Hz three e resistance and inductance of each phase is 8-Ω and 0.04 H, respectively. The PS. A three-phase phase source. The wire between a source and the motor has 0.1-Ω of resistance and 1 mH inductance. nd the phase voltage. (2 pts.) a single-phase diagram of the system with its values. (5 pts.) c) Find the line current (magnitude and phase) for...
A1 A 3-phase 50 Hz, delta balanced loads are connected in positive sequence as shown in...
A1 A 3-phase 50 Hz, delta balanced loads are connected in positive sequence as shown in Figure Al. Each phase consists of a resistance with 12 22 and an inductance of 20 mH. Determine: (a) the phase current Ipi: (b) the line current Ili; (c) the power factor of the loads. (3 marks) (1 mark) (1 mark) 141 L10 Z1 p3 p1 50Hz L20 1L2 Z3 102 I L3 22 L3O Figure A1
A three-phase 400V, star-connected motor has an output of 50kW, with an efficiency of 90 per...
A three-phase 400V, star-connected motor has an output of 50kW, with an efficiency of 90 per cent and a power factor of 0.85. Calculate the line current. Sketch a phasor diagram showing the voltages and the currents. If the motor windings were connected in mesh (delta), What would be the correct voltage of a three-phase supply suitable for the motor?
A three phase 10-pole synchronous motor has per phase synchronous resistance of 4.3 ohm. It is...
A three phase 10-pole synchronous motor has per phase synchronous resistance of 4.3 ohm. It is connected to a 4160V (line to line) 60Hz line and generates an excitation voltage Eo of 1790V (line to neutral) when the dc exciting current is 30A. The Torque angle between E and Eo is 30 degrees. Calculate a) The mechanical angle between the center of rotor and stator poles b) The voltage across the synchronous reactance c) The power delivered to the motor...
5 Three inductive coils each of inductance 45mH are connected in star to a 3 phase 400V, 50 Hz supply. Calculate the inductance of each coil, which when connected in delta to take the same supply voltage and line current, also find the power delivered at unity power factor for both star and delta connected load. (6 Marks)
b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages (4 marks) ii. Total apparent power (1 mark) iii. The impedance of each coil. (2 marks) c) If the coil in Q3(b) are now connected in delta to the same three-phase supply,...
Alternating Current Circuits Containing Inductance Cirele the letter beside the correct answer Three inductors connected in parallel have inductive reactances of 24 Ω, 48 Ω, and 36 Ω. If the inductors are connected to a 60-He line, wha is the sotal inductance of the eircui? A. 00294 11 , 0.34611 C 0 0579 11 D. 0642 11 I. What is the relationship of current and voltage in a inductive circuit The currene lags the voltage by 90 The current leads...
I just need answers to f,g,and h
connected motor is connected to Vi-L 120 3T/6 V-rms, 50 Hz three e resistance and inductance of each phase is 8-Ω and 0.04 H, respectively. The PS. A three-phase phase source. The wire between a source and the motor has 0.1-Ω of resistance and 1 mH inductance. nd the phase voltage. (2 pts.) a single-phase diagram of the system with its values. (5 pts.) c) Find the line current (magnitude and phase) for...
A1 A 3-phase 50 Hz, delta balanced loads are connected in positive sequence as shown in Figure Al. Each phase consists of a resistance with 12 22 and an inductance of 20 mH. Determine: (a) the phase current Ipi: (b) the line current Ili; (c) the power factor of the loads. (3 marks) (1 mark) (1 mark) 141 L10 Z1 p3 p1 50Hz L20 1L2 Z3 102 I L3 22 L3O Figure A1
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