A) Currents flowing into three-phase system are given as:   1 = 100/0   I = 141.4/225   I = 100/90   Find symmetrical components of line currents.   B) Symmetrical components of three phase voltage are:   (0)=120/20   V=140/150   V(2)=160/270   Find actual phase voltages

Q: A three phase system cannot be obtained using two single phase source.

A: given two single phases source we need to obtain 3 phase source

Q: 2. The sequence component of phase a current are: Zero sequence current = = Positive sequence…

A: Types of sequence current in unbalanced system  Zero sequence current (  finite value ) Negative…

Q: For the power system its one line diagram is shown below: 1-Draw the reactance diagram for power…

A:

Q: For the same voltage and current produced by a three phase and single phase source, the power…

A: In this question,  We need to choose the correct options Choose the given Statment is true or false?…

Q: a) The currents in a 3-phase unbalanced system are 2-j 4,3+j1 and 5-j6 amperes for phases A, B and C…

A: Step 1: Step 2:Step 3: Step 4:

Q: 3. Which statement below is False, Answer: (A) Any arbitrary set of three phasor can be represented…

A: Types of sequence in unbalanced system Negative sequence Positive sequence Zero sequence

Q: Write an introduction about:  LOAD BALANCING in 3-Phase System

A: Three-Phase System -  A three-phase system is formed out of a three-phase voltage source that is…

Q: In a three phase overhead system , each line is suspended by a string of three insulator. The…

A:

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

A: Given  One line diagram of a three phase system

Q: Note: It is expected from student to develop impedance matrices of three phase power system. Develop…

A: From the given power system network Impedance matrix is develop as shown below

Q: (a) Give THREE (3) advantages of a three-phase system compared to a single-phase system.

A:

Q: The figure below shows the one-line diagram of a three-phase power system. By selecting a common…

A: In this question we need to draw a per unit impedance diagram of the given system.

Q: 15. When the three-phase balance load having a pure resistive load the current is a) leading to the…

A: 15)Given;When the 3-phase balance load having a pure resistive load the current is--?Let as know…

Q: (ii) A string of suspension insulators consists of three units if the voltage across the line unit…

A:

Q: A single-line diagram of a three-phase balanced system is given below. A bolted three- phase short…

A:

Q: The generator fault current in Ampere is:

A: Given that, Base Voltage (Vb)=13.8kV, Base MVA (Sb)=100 MVA, reactance of line (Z)=20 Ω, Three phase…

Q: Question 3 In a balanced three-phase Y-Y system, the source is an abs sequence of voltages and…

A: Given  Source voltage Van=100∠20° VrmsLine impedance Zl=0.6+j1.2 Ωper phase load ZL=10+j14 Ω

Q: A single phase transmission line is delivering 500 kVA load at 2 kV. Its resistance is 0-2 2 and…

A: The solution can be achieved as follows.

Q: and

A:

Q: () State TWO (2) advantages of three-phase system over single-phase system. (ii) For a three-phase…

A: a(i) The advantages of a three-phase system over a single-phase system are the following:1- For the…

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

A: Bus admittance matrix calculated using line impedance as Ydiagonal=sum of all admittance connected…

Q: None

A: 1. Basics of Three-Phase Power:Definition: Three-phase power is a method of electrical power…

Q: A 3-phase system has a single phase to earth fault (i.e. phase A is short circuit to earth while…

A: In this question we need to find the per unit phase A current of the given system when a single line…

Q: Which one of the following diagrams shows delta-delta connections of three single-phase transformers…

A:

Q: Note: It is expected from student to develop impedance matrices ofthree phase power system. Develop…

A: Given: Pwer sytem network Z-bus can be build by the 4 types of modification:Type-1: New to…

Q: A balanced delta connected load of 14+j16 ohm per phase is connected at the end of three phase line.…

A: Given:  A balanced delta connected load per phase impedance=(14+j16) ohm Per phase line…

Q: In an unbalanced three phase system, having balanced supply phase voltages are separated by 120°…

A: The objective is to determine the correct option.

Q: 2.21 The three-phase source line-to-neutral voltages are given by E= 10/0, E = 10/+240, and E =…

A:

Q: he one-line diagram of a three-phase system is shown in Figure 1. By selecting a common based of 100…

A: Given, Common base power, SB = 100 MVA Base voltage = 32.75 KV

Q: 3 Phase Losses in the transmission line Per phase resistance of the transmission line

A:

Q: Explain in details the relation between phase and line voltages and currents in a star- connected…

A: Circuit diagram for star connected network is given by, Here N is the neutral point R is red phase…

Q: Note It is expected from student to develop impedance matrices of three phase power system. Develop…

A: Z-bus is determined as shown below

Q: (Application Exercise) As shown in Figure 6, a three-phase, four-conductor line with a phase voltage…

A: To solve the problem presented in the figure, we'll need to calculate the following:Current for each…

Q: 44020⁰ 4402120° n a 440Z-120° Ib 6-j8 Ω 6-j8Q2 N (6-j8 Ω Ic 1. Calculate the line currents for…

A: In this question, we need to determine the line currents, line to neutral voltage and various…

Q: 1. We can change the sequence of a three- phase system by 2. The time of transient period is 3. In…

A: A three-phase system is a system with three-phase voltages, all three voltages are separated by an…

Q: 62 30/0° V rms -j22 Determine the power factor of the entire circuit of as seen by the source.

A: Power factor is the ratio of true power by apparent power. The value of power factor lies in between…

Q: A balanced system of 3-phase currents having positive (or normal) phase sequence, these are called.…

A: To analyse the given question

Q: Note: It is expected from student to develop impedance matrices of three phase power system. Develop…

A:

Q: In a single phase equivalent circuit, the current in the a-phase conductor line is simply the…

A: We need to find the true or false for the given statement

Q: Develop impedance matrix (Z-bus) of power system network as shown in figure. [Values are given in…

A: The given system is, The z bus can be build by four types of modifications.

Distribution System

The final stage in the delivery of the electric power is the electric power distribution system. From the transmission system to the individual customers it carries electricity. The distribution system is connected with the transmission system and is used to lower the voltage of the transmission to medium voltage in the range of 2 kV to 35 kV with the help of transformers. This medium voltage to the distribution transformers located near the customer's premises is carried by the primary distribution system lines. These distribution transformers in turn lower the voltage to utilization voltage used in lightings, household appliances, industrial equipments etc. Through secondary distribution lines often several customers are supplied from one transformer. It is through service drops, the commercial and residential customers are connected to the secondary distribution system lines. Customers who demand a larger amount of power can be connected directly to the primary distribution system level or the sub-transmission level.