A) - = 1202-5° V = 10040° -2=1+5752 ✓ a.) Find Real and Reactive Power Supplied/dissipated indicate whether the source is supplying or each source and receiving power. b.) Find complex power consumed by the line.
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- Q.3 (a) The short circuit MVA at the terminal of generating Station A and B are 1100 MVA and 1200 MVA respectively. The generated voltage at each station is 33 kV. If these stations are interconnected through a line having a reactance of 1.5 2 and negligible resistance, calculate the possible short-circuit MVA at both station. Choose 100 MVA as base. (b) A power system is represented by one line diagram in Figure Q.3(b). Each bus is rated at line voltage of 66 kV. The reactance of each component is given in per unit, based 100 MVA and rated voltage of the component. Assume that the prefault voltage of each generator is to be 1.0 per unit. Bus impedance matrix with all elements in per unit for the system is given below: j0.138 j0.112 j0.130 j0.138 j0.121 Zj0.112 jo.130 j0.121 j0.160 A solid three phase fault occurs at bus 1. Determine: (i) Fault current (in Ampere) and fault level (in MVA) at Bus 1. (ii) Transmission lines current (in Ampere) during fault. If line L23 is connected in…In general, a three-phase induction motor isdesigned for wye connection operation. However, forshort-time operation, a delta connection can be used atthe nominal wye voltage. Find the ratio between thepower delivered to the same motor in the wye anddelta connections.Consider the circuit shown in Figure 2 below.a) Compute the phasor form of the load ZL that will absorb a maximum amount ofpower, and compute the maximum power delivered to this load. b) Show that the power delivered to the load is reduced if the load is ZL + j5.Explain why this is the case.
- An AC voltage source delivers current to Load A and Load B which are connected in parallel. Current in Load A is 25 A and Current in Load B is 42.2. If the current in load B leads the current in load A by 45 degrees, calculate: a) Resultant or total current, b) Angle between the resultant current and Load current A if Load Current A is at reference or zero degrees.-write legibly-show the complete solutionConsider the single-phase three-wire system shown. Find the current in the neutral wire and the complex power supplied by each source. Take V, as a 115∠0° V, 60-Hz source.Q4/For the three-phase power network shown in Figure. the various components are: GI: 100 MVA, 0.30 pu reactance. G2: 60 MVA, 0.18 pu reactance. Transformers (cach): 50 MVA, 0.10 pu reactance. Inductive reactor X: 0.20 pu on a base of 100 MVA. Lines (each): 80 ohms (reactive); neglect resistance. with the network initially unloaded and a line voltage of 110 kV, a symmetrical short circuit occurs at midpoint E of line 2. Calculate the short circuit MVA to be interrupted by the circuit breakers A and B at the ends of the line. T3 38 L1 L2 G2 Bas 12 T4 Bus
- 60. An RLC series circuit connected to a 110-volt and 50-cycle AC source, contains the following series resistances and reactances: R1=10 ohm, R2= 15, XL1=20 ohms, XL2=25 ohms, XC= 40 ohms. Find the real power. a. 65.3899 b. 392.4372 c. 397.848 d. 588.6559A d.c. serier generator, having an external characteristic which is a straight line through zero to 50 V 200 A is connected as a booster between a station bus bar and a feeder of 0.3 ohm resistane. Calculate the voltage difference between the station bus-bar and the far end of the feeder qa current of (i) 200 A and (ii) 50 A.To attain maximum power delivered to a load, what value of load impedance is required if a. the load can have any complex value; b. the load must be pure resistance?
- For the circuit given in Figure 1, a) Find the Thevenin equivalent circuit with respect to terminals a-b b) When a 5000 resistor is connected to terminal a-b, find the voltage on the resistor wwwwwwmm c) It will be connected to a-b terminals and its voltage on 5000 load will be 132 kV rms. What should be the capacitive reactance value that will increase it? wwwwwwwww d) What happens to the short-circuit current when the a-b terminals are short-circuited? 2+1202 000 m da 127/6 kV rms ob 1.5 +/902 000 w 12725 kV msThree impedances (4-j6) ohm, (6+j8) ohm, and (5-j3) ohms are connected in parallel. Calculate the current in each branch when the total supply current is 20 A. Please provide its solution...its urgently needed...please.Discuss Fully the various methods available for transforming 3-phase voltages to higher or lower 3-phase voltages. Highlight the advantages and disadvantages of each. Include the connection diagrams.