why 3-phase power has replaced 2-phase power.

Q: 1) A load of 130 MW at a power factor of 0.75 lagging can be delivered by a 3-phase transmission…

A: Note: We are authorized to answer one question at a time, since you have not mentioned which…

Q: How many wattmeters would be needed to measure the total three-phase power in a balanced three-phase…

A: In this questions, we need to tell about the how many wattmeter is required to measur the power in…

Q: Balanced 3-Phase Circuit) 1-What is the relationship between phase and line quantities in balanced…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the most important 2 reasons for using 3 phase electrical power systems

A: 1.power to weigh ratio of 3 phase is high as compared to 1 phase.

Q: A three-phase four-wire system has unbalanced connected loads that draws 7 amps from line A, 16…

A:

Q: What are the three types of equipment that may require three-phase power

A: Three-phase electricity is the most common method of alternating current power generation,…

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

A:

Q: Example 37.35. An 11-kV, 1000-kVA, 3-phase, Y-connected alternator has a resistance of 22 per phase.…

A: The solution can be achieved as follows.

Q: Red(R) RN Off On -Generator Neutral (N) 3 phase 42 volt Power Supply Ph2 Neutral Ph1 Ph3 Yellow (Y)…

A: The power supply is define as the device which is used to provide electrical supply to the load…

Q: The 3-phase power and line-to-line voltage ratings of the el figure are as follows: Generator G 160…

A:

Q: 5.A delta connection has 30 A of current flowing through each phase winding.  How much current is…

A: In delta connection, the relation between phase and line currents is, line current IL =…

Q: Q. No. 01 [CLO1-C3]: Draw an impedance diagram for the electric power system shown in Figure-1,…

A: We can obtain the impedance diagram by using below steps: -  The base voltage VBG1  on the LV side…

Q: (a) Give three reasons why power protection is important. (b) Name three types of disturbances seen.

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Q: 1) Complex power required for the other load is? /2) the value of the line current is?

A:

Q: Choose the correct options of three-phase supply compared to single-phase supply: I. Three-phase…

A: Compare with single phase and third phase system.

Q: -What are the reasons for using three phase system to generat and distribute electrical power.

A: In three-phase distribution, phase current is distributed in the phase of 120 degree due to which…

Q: a) High Voltages are preferred for Transmission of Electricity. Why? b) Why Generation Voltage…

A: a ) High voltage are preferred for transmission of electricity because transfer capacity increases…

Q: 2-What is the relationship between phase and line quantities in balanced star and delta connections?…

A:

Q: What is the total three-phase real power drawn by the two loads? Express your answer in Megawatts

A: In this question,   We need to calculate the total real power of the three phase?

Q: 3. What significance has power factor in an unbalanced system?

A: The objective is to determine the effect on power factor in the unbalanced power system.

Q: 2. Give four reasons why three-phase power supply is superior to single-phase supply.

A: Three phase power supply is became popular and also being used over the world wide than single phase…

Q: A - jjo00 -jioco -j250 L-j250 jioco З РHASE 0.5+j2 M B. 0.5+j2 -jiooo SOURCE AC -joo0 мотOR -j2so C…

A: Power factor: It tells how much active power is utilized by the circuit from the apparent power.

Q: Single Phase and Three Phase Principles

A: As per Bartleby guidelines we are allowed to solve only one question, please ask the rest again.

Q: The single-line diagram of a three-phase power system is shown in the below figure. Equipment…

A: Given base parameters for zone 1-2 MVAb = 1000 MVA KVb =765 kV    to determine positive negative and…

Q: A single phase transmission line is delivering 460 kVA load at 10 kV. Its resistance is 6 Ω and…

A: Part (1): The current in the transmission line is determined as: P=VrmsIrmscosθ460 kVA=10…

Q: 8. A 415-V, 3-phase, 4-wire system supplies power to three non-inductive loads. The loads are 25 kW…

A:

Q: What is a single and three phase power systems with resistive, inductive and capacitive loads?

A: Generally, we use two types of power supply in our application. It can be a single-phase power…

Q: The electrical power supply system of a particular country is made of the following. Draw a single…

A: A single line diagram for the bus bar A connected to an infinite bus bar S through a circuit…

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

A:

Q: How to avoid errors in the Measurement of 3- Phase Power Using Two-Wattmeter Method.

A: Measurement devices are used to measure electrical quantities. The true value and the measured value…

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

A:

Q: In three phase system, the performance of motor produces the uniform torque.   Select one: True…

A:

Q: Must you see two wattmeters to measure the total three-phase power on a balanced three-phase…

A: In this question we discuss about two wattmeters to measure the total 3-phase power.

Q: Analyse the methods that improve the power factor of a electrical circuit.

A: In electrical engineering, the power factor of an AC electrical system is determined as that of the…

Q: Calculate the line currents for phase a, b and c. 2. Calculate the line to neutral voltages at the…

A: Fig: Given citrcuit  (1) Although in the Y- connected system  Line current  =phase…

Q: Poor power factor causes greater voltage drop because the line voltage drop depends on the a. line…

A: power in circuit is p = voltage* current * power factor. voltage drop is current * line resistance

Q: What applications (uses) for 3-phase open Delta systems?

A: Open-delta systems : It is an emergency connection of a 3-phase delta connection. It is also known…

Q: The AC motor M of figure shown in the next slide has 2300 Volts, balanced three phase voltage…

A: Power factor: It tells how much active power is utilized by the circuit from the apparent power.

Q: (b) For the balanced three phase system shown below, it is determined that 200W is dissipated is…

A: Convert the delta load to equivalent star loadThe equivalent load impedance in star connection…

Q: a- Explain why the start-up time of a power plant is important in power system operation. b- Explain…

A: As per the guidelines given, We can only provide the solution of the first three questions in…

Q: What is the difference between a balanced load and an unbalanced load? Explain the power measurement…

A: Difference between Balanced and Unbalanced load:                A balanced load in a three-phase…

Q: In the circuit of figure shown in the next slide, three impedances are 12-j10 ohms, 10 + j20 ohms,…

A: Three phase power measurement method Three wattmeter method  Two wattmeter method  One wattmeter…

Q: 1. If two wattmeters are used to measure total power in a three-phase three-wire system does each…

A: NOTE- As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the…

Q: Q2(a) Figure Q2(a) shows the spacing of a double circuit 3-phase overhead line. The phase sequence…

A:

Q: 1. A 3-phase, 30 MVA, 33 kV alternator has intemal reactance of 4% and negligible resistance. Find…

A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again.

Q: A three-phase system is said to be more economical than an equivalent single-phase two-phase system…

A: Mainly speaking about 3phase system, it initially requires huge cost but after construction, the…

Q: a. If two wattmeters are used to measure total power in a three-phase three-wire system does each…

A: Given question is related to measurement of power in a circuit

Q: The terminal voltage of a 3-φ generator is 19053 V, line-to-line. The load draws a current of 1515…

A:

Q: What are two main types of three-phase connections

A: Two main types of three-phase connections are : Star connection Delta connection In star…

Fault Analysis

In an electrical engineering system, a fault is an abnormal electric current flowing through the system, and fault analysis is the study of these faults. For instance, a short-circuit is a fault where the live wire touches the ground or neutral wire. If a circuit is interrupted by a failure of a current-carrying wire then an open circuit fault occurs. The open-circuit faults are also called series faults. One or more phases or ground may be involved in a three-phase fault or may occur only between two phases. Current flows into the earth in case of a ground fault or earth fault. For most situations, the prospective short circuit current of a fault that is predictable can be calculated. To limit the loss of service because of a failure, the protective devices can detect fault conditions and operate circuit breakers and also other devices. All phases equally can be affected in a poly-phase system which is known as symmetric electrical fault. The asymmetric fault becomes more complicated to analyze if only some phases are affected. By using methods such as symmetrical components, the power system analysis of these types of faults is often simplified. The main objective of power system protection is to design, detect, and interrupt power system faults.