) Choose how to measure the R phase voltage in three phase star connected system?    a. Between R phase and Y phase b. Between R phase and B phase c. Between B phase and Neutral d. Between R phase and Neutral

Q: The recommended limit of voltage drop on a power circuit for a single-phase supply as per IEE Wiring…

A: The explanation is as follows.

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: 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) Define the meaning of the balanced three phase system.

A: 3 phase system means the power system which has 3 phases here generally considered by R B Y or a b c…

Q: Discuss Fully the various methods available for transforming 3-phase voltages to higher or lower…

A: Different methods available for transforming 3-phase voltages to higher or lower 3-phase voltages at…

Q: Define the terms a) balanced system or symmetrical system b) phase sequence c) balanced load

A: As per our policy we can provide solution to first three questions only a) Balanced system or…

Q: With neat diagram, discuss the 3-phase power measurement using three wattmeter method and write down…

A:

Q: How will you calculate the average wattmeter reading in one wattmeter method for balanced load?

A: This is the schematic diagram for the measurement of power using the one-wattmeter method. The…

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

A:

Q: What is the difference between single phase and three phase system? What are the advantages of three…

A: The explanation is as follows.

Q: he Fig shows the single line diagram of a single phase circuit. Using the base values of  3 kVA and…

A: Given: Base Values: 3 kVA, 230 kV at generator side. Line impedance XTL=2 Ω, Load impedance…

Q: What is the standard three phase a.c. supply we are getting in Sultanate of Oman from power…

A: In the Sultanate of Oman, the electrification rate is 98%. and the standard three-phase a.c supply…

Q: Each line of a 3-phase system is suspended by a string of 3 similar insulators. If the voltage…

A: The solution can be achieved as follows.

Q: Choose how to measure the line voltage VRY in three phase star connected system?  a. Between R…

A: Line voltages are measured between two lines

Q: What is minimum and non minimum phase system. Draw its phase characteristic curve.

A: Transfer function is ratio of output signal to input signal. It is the given as ratio of Laplace…

Q: The algebraic sum of the three voltages in a three phase system is always equal to zero.  True…

A: Brief description: Here in the above given question they are discussing about three phase systems.…

Q: The most common system for .secondary distribution is 3-phase, . . wire system. *

A: There are two types of distribution is present, primary distribution and secondary distribution.

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: In case of unbalanced 3-Φ, 4-wire system % voltage drop is… not possible to estimate same as in…

A: it should estimate for each phase .

Q: current and fault MVA, if a 3-phase fau

A:

Q: For a balanced load, the current in a neutral conductor of a three-phase, four- wire system is equal…

A: In a three phase balanced 4 wire system there are 4 wire in which 3 of them represent three…

Q: Calculation:- 1- Calculate theoretically the duty cycle & frequency of the circuit. 2- Compare…

A: The circuit diagram is shown below, where,The value of capacitor and resistors…

Q: For the three voltage values ​​below, determine the state of the three-phase system whether balanced…

A: In this case , we will write about voltage given are balanced or not....

Q: Show that over the length of one transposition cycle of a power line, the total flux linkages of a…

A:

Q: The symmetrical components of phase voltage of 3-phase unbalanced system are Va0= 20∠50°V, Va+=…

A: we need to determine the phase voltage Va, Vb, and Vc.

Q: 1.2 For each set of voltages, state whether or not the E voltages form a balanced three-phase set.…

A:

Q: Q1: A single core 66 kV cable working on three phase system has a conductor diameter of 2 cm and a…

A: i)In above figure, r=d2=21=1 cmR=D2=5.32=2.65 cmSheath 1 : radius r to r1Sheath 2 : radius r1 to…

Q: Briefly explain about single phase and three phase power supply with diagrams.

A:

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: ) In three phase star connected system the Y phase voltage is measured between _____________   a.…

A:

Q: In 3-phase system, if the three loads were identical in every way, then the currents flowing in the…

A: Given For three phase system the three loads are identical every where Means load is same every…

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: How to measure the B phase voltage in three phase star connected system? a. Between B phase and R…

A: Phase voltage is the voltage between any line wire and neutral wire, so here the phase voltage of B…

Q: 1. With an elegant diagram, discuss the three-phase power measurement using the three-watt meter…

A: This is a very simple question based on measurement subject .In this we will understand how the…

Q: To distribute Power from 1 MW three phase power source to main distribution board which is 80 metre…

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: For a star connected three phase balanced system, ________________ a. None of these b. Phase voltage…

A: For a star connected three phase balanced system

Q: hree-phase gas pressure cable (Draw, Identify and Mark all the parts)

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: For a delta connected three phase balanced system, a. Phase current is equal to line current and…

A: According to the question we have to discuss the delta-connected balance system.

Q: Single phase Power delivered Per phase voltage

A:

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: 7/For a star connected three phase balanced system, ________________ a. None of these b. Phase…

A: For a star connected three phase balanced system, ________________ a. None of these b. Phase voltage…

Q: Draw the equivalent circuit for a three phase, three wire system and label the parameters..

A: The solution is given below

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

A: Let us consider a balance 3 phase system in which a balance 3 phase load connected in star and delta…

Q: Describe an unbalanced or asymmetrical of three-phase electrical system. i) State two (2) effects of…

A: The explanation is as follows.

Q: With the help of phasor  diagram ,derive the expression  for the power factor using two wattmeter…

A:

Q: B2 List any four advantages of three phase system.

A:

Q: Each track is a fi model with a series impedance and a sequence for track C as shown in the table…

A:

Q: Benefits of 3 phase system over 1 phase system

A: Benefits of 3 phase system over 1 phase system

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.