X = 9% X-16% X=20% X = 9% X=120 Ω S 48 MW +j64 Mvar 1 90 MVA 20 kV 80 MVA 20/200kV T2: 80 MVA 200 20 kV G90 MVA 18 kV Line: Load 200 kV 200 kV Τι T2 Line Load

Q: 1. How do you measure three phase line currents by using two current transformers? Draw the…

A: The diagram for the three-phase system and the two current transformers are drawn below, Consider…

Q: Please enter your answer in the blank's: Voltage at load bus, VLoad = ° p.u. Motor apparent power,…

A: One line diagram of a three phase system  From circuit

Q: Q2. Consider the single-line diagram of the power system shown in Figure Q2. Equipment ratings are:…

A: In this question we need to find a per unit reactance after finding per unit value we need to draw a…

Q: Look at the circuit in Figure 1 and determine the following: (a) Total Admittance. (b) Total…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: A single-phase power system consists of a 600-V 50-Hz generator supplying the circuit shown in…

A: The given circuit diagrams (1-a) and (1-b) are shown below: It is given that: V=600 Vf=50…

Q: The main advantage of A.C. systems over D.C. systems is: O a) transformers can be used to change…

A: The transformer only works on AC and cannot be operated on DC. A transformer is a device that…

Q: A 30 MVA 11 kV generator has a reactance of 0.10p.u.on its own base. Determine the per-unit…

A: Given: For the generator Sbold=30 MVAVbold=11 kVXpuold=0.1 puSbnew=50000 KVA=50 MVAVbnew=33 kV

Q: Draw the phasor diagrams for the following 3-phase components: 1-Transformer: exact equivalent…

A:

Q: In the system shown in Figure 1, the transformers are connected star-star with both star points…

A: It is given that: MVAbase=15XT1=XT2=XT3=0.04 pu

Q: If you have 3-phase power and you need to step down (or up) in 3-phase voltage, how many…

A: The objective of the question is to determine the number of single-phase transformers required to…

Q: Three zones of a single-phase circuit are identified in the figure with a generator voltage…

A: For the evaluation of electrical machines, one-of-a-kind values are required, consequently, per unit…

Q: Consider the system shown in Figure 1. Assume the load voltage (VL) is 4720 V and the load…

A: Given circuit is,Load current?Primary and secondary voltages of ideal transformer.

Q: The one line diagram of power system is shown in Figure Q.1. Use a common base MVA of 100 MVA and…

A:

Q: What are FACTS (Flexible Alternating Current Transmission Systems), and how do they improve the…

A: Flexible Alternating Current Transmission Systems (FACTS) are a set of advanced power electronics…

Q: Connect three single-phase transformers in Y-Y, with subtractive polarity, so that the line-to-line…

A: Given: Connect three single-phase transformers in Y-Y, with subtractive polarity, so that the…

Q: a. i. Why do power systems operate in an interconnected arrangement? ii. How is the frequency…

A: The connection of several generating stations in a network of particular transmission voltage level…

Q: The one-line diagram of a simple power system is shown in Figure below. The neutral of each…

A: In this question we need to find a 3 phase fault at bus 3 .

Q: In the transmission system shown in the figure above, the rated kVA of transformer 1, T1, is 1000…

A:

Q: a)Why are transformers generally connected in parallel at a substation? b)What conditions must be…

A: Transformers are generally connected in parallel at a substation to increase the overall power…

Q: Three single-phase distribution transformers, each rated for 18 kVA, 20000/220 volts, are connected…

A: Three single-phase distribution transformers are connected in a Dy three-phase bank. Rated power…

Q: 2A. What is another term for "shunt"? a) in series b) in parallel c) compounded d) none of the above…

A:

Q: a given field current produces an armature current of 250 A on short-circuit and a generated e.m.f.…

A: Given data, Armature current Ia=250 A Open circuit voltage Voc=1500 V Voltage V=6600 V power factor=…

Q: 2. The one-line diagram of a power system is shown in the figure. The three-phase power and…

A:

Q: explain why Transformers are necessary in all stages of power distribution systems. Three-phase…

A: Given: Transformer: Transformer is a static device used for the transfer of varying voltage and…

Q: Consider the three single-phase two-winding transformers shown in Figure. 3. The high-voltage…

A:

Q: 1. A single-phase power system as shown in Figure 1 consists of a 240 V, 60 Hz generator supplying a…

A:

Q: No-load operation and short circuit tests were performed on three-phase, 50 Hz 480/220 delta / Y…

A: Giveen  : No load Test Violtgae =480vCurrent =0.71 A Power =114 w Short circuit  test : COltage = 10…

Q: There is a three-phase system such that the phase current in the generator, lines and charging phase…

A: Given data: Phase voltage VP=1000 V(rms) Phase current Ip=10 A(rms) Power factor = 0.97 lagging…

Q: Figure below shows a power system. The rating of generators and transformers are:G1:25MVA, 6.6KV,…

A: base value 30 KVA  and 6.6 KV=0.03 MVAXpu(new)= Xpu(old) ×(MVAnew)(MVAold)×(KVoldKvnew)2

Q: A 10 MVA three phase load is to be served by a three phase transformer at a line voltage of 13.8 kV.…

A: Transformer is the static device it is used to transfer the electrical power from one terminal to…

Q: e = 0 Q1: What does happen if we change two currents? Q2: What does happen if we have a three-phase…

A: 1)It is not possible that , current can flow in two directions at same time. However if we apply two…

Q: Draw and explain the phasor diagram for two transformers in parallel

A:

Q: In the system shown in Figure 1, the transformers are connected star-star with both star points…

A: In this question we need to find the load current in per unit value

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.