1- Plot the load and duration curves of the power station. 2- Find: (i) Load factor of each load. (ii) Load factor and Diversity factor of the power station. (iii) The reserve capacity and Capacity factor of the power station. If the power station consists of three units, the installed capacity of each unit is 20 MW.
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- Please answer with step by step math for Zin, Zout, and the load voltage. Thank you!Q20. The section bus-bars A and B as shown in Figure B5 are linked by a bus-bar reactors each rated at 5000 kVA with 10% reactance. On bus-bar A, there are two generators each of 10,000 kVA with 10% reactance and on B two generators each of 8000 kVA with 12 % reactance. Find the Current and MVA that fed into a dead short circuit between all phases on B with bus-bar reactor in the circuit. Page 4 of 5 جامعة التقنية والعلومر التطبيقية بإبراء University of Technology and Applied Sciences - Ibra Student ID: Section: Student Name: 8,000 kVA 12% 10,000 kVA 10,000 kVA 10% 8,000 kVA 12% 10% 2 3 5,000 kVA 10% lell 8,000 kVA 10% Figure B5 "End of Question Paper"(b) A symmetrical three-wire three-phase supply as shown in Figure Q2(b) is connected to a balanced three-phase load. The value of impedance, Z is identified to be 100-j75 Q. (i) Find IaB, IBC and ICa (ii) Determine Iaa, IbB and Ic (iii) Determine Iba, Isb and Ix (iv) Draw the phasor diagram of all currents in Q(b)(i) and Q(b)(ii)
- In the circuit in Figure 2, the capacitor connected to the a-b terminals of the transformer anda circuit consisting of resistance is defined as a load circuit. a)Find the average power spent by the load circuit? b) How much of the average power calculated in a) by the resistance in the load circuit and how muchspent by the capacitor? Comment on the results obtained?A Single Area consists of 3 generating units (G1/G2/G3) with the following characteristics: G1: 250 MVA rating, R1 = 0.02 pu (on the 250 MVA base), initial output P1 = 200 MW. G2: 350 MVA rating, R2 = 0.015 pu (on the 350 MVA base), initial output P2 = 300 MW. 0.03 pu (on the 300 MVA base), initial output P3 = 150 MW. G3: 300 MVA rating, R3 = The frequency of the system is 60 Hz. Assuming D = 1 pu on a common base of 1000 MVA, what is the new generation output for G3 for a load increase of 75 MW? Select one: O a. 190.55 MW O b. None of these O c. 203.38 MW d. 166.01 MW8 = 0 Q1: What does happen if we change two currents? Q2: What does happen if we have a three-phase four poles machine? a Q3: What does happen if we have a two-phase two poles machine? Q4: What does happen if we apply a capacitance in phase b and then use same voltage for both phase. Dr. Ali K....p. . --
- A single phase 120V AC sourc controls power to a resistve load 20N using integral cycle control. a) Find the output power for both output voltage waveforms shown below. b) The voltage and the current ratings of the switch. c) The duty cycle and the value of TON to produce 0.63KW power. d) The power factor for part (c). Awww TON -TONe = 0 Q1: What does happen if we change two currents? a. Q2: What does happen if we have a three-phase four poles machine? Q3: What does happen if we have a two-phase two poles machine? e = 0 Q4: What does happen if we apply a capacitance in phase b and then use same voltage for both phase. Dr. Ali Ki. pw --The indication of a lagged demand meter approaches the value of the actual load at a rate which is proportional to A. Quotient of the load and the meter indication. B. product of the load and the meter indication C. Difference between the load and the meter indication D. sum of the load and the meter indication
- A generator operating at 50 Hz delivers 1 p.u. power to an infinite bus through a transmission circuit in which resistance is ignored. A fault takes place reducing the maximum power transferable to 0.5 p.u. Where as before the fault, this power was 2.5 p.u. and after the clearance of the fault, it is 2 p.u. The value of 8 is maxCombination circuit what is PT? RT? IT? Voltage Across each load?A Single Area consists of 3 generating units (G1/G2/G3) with the following characteristics: G1: 425 MVA rating, R1 = 0.015 pu (on the 425 MVA base), initial output P1 = 300 MW. G2: 300 MVA rating, R2 = 0.02 pu (on the 300 MVA base), initial output P2 = 200 MW. G3: 300 MVA rating, R3 = 0.03 pu (on the 300 MVA base), initial output P3 = 200 MW. The frequency of the system is 60 Hz. Assuming D = 0 pu and using a common base of 1000 MVA, what is the new steady-state frequency for a load increase of 100 MW? Select one: O a. None of these O b. 59.96 Hz O c. 58.75 Hz O d. 59.88 Hz