a) Three 30 2 resistors are arranged as shown in Figure 1 below. They are connected to a 480 V three-phase supply. The phase sequence is RYB anticlockwise. Calculate: i. The total power drawn by the circuit using the phase parameters. ii. The power read by each wattmeter. b) If Za, one of the 30 2 resistors, is now removed from the circuit, calculate: R- i. The line currents: IR, Iv, and la ii. The power read by each wattmeter. iii. The total power drawn by the two resistors. W₁ Be- W2 www 'R 22 12 B Figure 1

a) Three 30 2 resistors are arranged as shown in Figure 1 below. They are connected to a 480 V three-phase supply. The phase sequence is RYB anticlockwise. Calculate: i. The total power drawn by the circuit using the phase parameters. ii. The power read by each wattmeter. b) If Za, one of the 30 2 resistors, is now removed from the circuit, calculate: R- i. The line currents: IR, Iv, and la ii. The power read by each wattmeter. iii. The total power drawn by the two resistors. W₁ Be- W2 www 'R 22 12 B Figure 1

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.28P: For the system shown in Figure 3.34. draw an impedance diagram in per unit by choosing 100 kVA to be...

See similar textbooks

Similar questions

Please show your complete work in the solution
For the system shown in Figure 3.34. draw an impedance diagram in per unit by choosing 100 kVA to be the base kVA and 2400 V as the base voltage for the generators.
Does an open- operation, the kVA rating compared to that of the original thr-phase bank is (a) 2/3 (b) 58 (c) 1
9. Three single phase transformers are used to transform 3 phase power. The primary winding of each transformer has 500 turns and the secondary has 75 turns. The primary windings are connected to a line voltage of 2.3kV. What is the secondary line voltage if the transformers are connected a) primary in wye secondary in delta? b) primary in delta and secondary in wye? c) open delta?
Problem 1 - Series en Parallel AC networks [19] Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total Impedance. (c) Total Current (l:). (d) Current (I1) through impedance Z2. (e) Current (12) through impedance Z3. (f) Current (I3) through impedance Z4. (g) Is this an inductive or capacitive circuit? A. B Zs 220V;50HZ Figure 1 (h) Voltage across Z1. (i) Voltage across A and B. G) Voltage across Zs. Z1 = 3 + j5 ohm Z2 = 10 + jo ohm Z3 = 5 + j15 ohm Z4 = 10 – j30 ohm Zs = 20 – j30 ohm Admittance and Impedance in rectangular notation. All currents and voltage in polar notation. Take voltage as reference.
Electrical Machine transformer question. please show steps.
A star connected three phase alternator supplies power to a delta connected resistive load. The alternator has a line voltage of 480V. Each resistor of delta load has 8 ohm of resistance. Find the following values. Line voltage of the load (VL(load)) Phase voltage of the load (VP(load)) Phase current of the load (IP(load)) Line current delivered by the alternator (IL(alt)) Phase current of the alternator (IP(Alt)) Phase voltage of the alternator (VP(Alt)) True power
Rush
The voltages of a two-phase system are how many degrees out of phase with each other?
Consider a simple positive phase sequence, three-phase, three-wire system operated at 50 Hz and with a balanced load. Each phase voltage of 240 V is connected across a load composed of a series-connected 80.00 and 500 mH combination. Please report your answer, so the magnitude is positive, and all angles are in the range of negative 360 degrees to positive 360 degrees. Calculate the total power supplied by the three-phase source. (Round the final answer to three decimal places.) W. The total power supplied by the three-phase source is
C. 33.1 A d. 69.28 A go on Deel box 12. In a T connection, how much is it preferred for the teaser transformer to contain? a. 25% b. 50% c. 75% d. 86.6% silny Lups an 13. What type of connection involves the use of two transformers to supply three-phase power? a. primary connection b. delta connection C. wye connection
1. Draw a schematic diagram for electrical networks from generators to the consumers with their connections and Show transmission, sub transmission and distribution sections in this figure. Show each sections voltage level. Show transformers voltage level. Show the number of wires in each section. Also shows the final single phase/three phase consumers connection to the low voltage systems.