Calculate the line currents for phase a, b and c. 2. Calculate the line to neutral voltages at the load for phase A, B and C. 3. Draw the phasor diagram of the source phase voltages and currents.

Q: B)-Draw the connection diagram of three-phase with Y-D connection and give the mathematical…

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Q: Which of the following is true for a 3-phase unbalanced load? a. Neutral current is the algibric sum…

A: Balanced load In 3 phase system is a condition where all three phases (lines) take  same magnitude…

Q: Which of the following is true for a Star connected load? a. phase voltage is equal to neutral…

A:

Q: Which of the following statements are true for simple systems consisting of a balanced three-phase…

A: Wye - connected system - In wye connected load, line and phase currents are identical but line…

Q: The input power to a 3-phase load is measured as 11kw. If the line current and power factor of the…

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Q: Non-Reactive Loads of 10kW, 20kW and 12kW are connected between the neutral and the red, yellow and…

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Q: Consider the balanced 3-phase circuit shown below (a)  Sketch the single phase equivalent circuit.…

A: In the balanced 3-phase circuit  (a) Sketch the single phase equivalent circuit. Show all values on…

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: Which of the following statement is incorrect for two wattmeter method to measure power? a. It…

A: In two wattmeter method, the current coils of the wattmeter are connected with any two lines.

Q: Discuss why: (a) All ac transmission and distribution system are 3 phase system. (b) The…

A: a)  All ac transmission and distribution system are 3 phase system because in  3 phase system…

Q: A Sketch the circuit diagram of a star connected three phase load and mention the line and phase…

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Q: The phase voltage of a three – phase, four – wire system are: VRN = (200 + j0) V, VYN = (0 – j200)…

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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: Q1. What is the necessity of maintaining phase sequence? Suppose there are three loads connected at…

A: Given data: VR=1200 VVL=2400 VVC=2400 V

Q: At what power factor will one of the wattmeter reading be zero in a three-phase system???

A: W1=VLIL cos(30-∅)W2=VLIL cos(30+∅)

Q: For balanced three phase star connected load, the phase angle difference between VR and VY is 30…

A: Given statement  For balanced three phase star connected load, the phase angle difference between VR…

Q: 6. The power flowing in a 3-0, 3-wire, balanced-load system is measured by the two wattmeter method.…

A:

Q: Explain the phase difference between line voltages and phase voltages in a positive sequence with…

A: In this question we will write about phase difference between line voltage and phase voltage in…

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

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Q: In a 3-phase star connected system, prove that VL =square root of 3 Vph , by considering the line…

A: Need to prove for the given star connected system

Q: Assuming ACB sequence, find the line and phase voltage if Vcn= 30<50 V.

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

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Q: In a 3-phase overhead system, each line is suspended by a string of 3 insulators. The voltage across…

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Q: Write a report on the Star connection for three phase load experiment using the data/results from…

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Q: For the three-phase system shown, determine: A) The magnitude of the line current. B) The magnitude…

A: It is given that:

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

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Q: 6. The power flowing in a 3-o, 3-wire, balanced-load system is measured by the two wattmete method.…

A:

Q: A current is measured at the neutral ground of a star load, of equal impedances in all three phases.…

A: In this question we need to choose a correct option

Q: draw single line diagram for a 3 phase consumer electrical wiring system, consider the following…

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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: An Alternator having three-phase, 3-wire ABC system supplying an effective line voltage of 120 V,…

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Q: In a three phase, star connection —— a. Line voltage is square root 3 times phase voltage b. Line…

A: Line voltage is voltage between any two line. Phase voltage is potential difference between one…

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: 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: 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: ohm respectively. Determine the following a) The inductance of the transmission line b) Sending end…

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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: Determine the load phase currents and phase voltages for the three-phase circuit in item #1 when the…

A: load phase current and phase voltage is caluclated as

Q: In 3-phase two wattmeter power measurement for delta connected load, the neutral is needed to…

A: In 3 phase two wattmeter power measurement for delta connected load, the neutral is needed to…

Q: 1. LA 'X', 3-phase (3-wire) 230L30 'X' A-connecked B Generator le Balanced System ACB sequence For…

A:

Q: 21/ In a three phase, star connection —— a. Line current is equal to phase current   b. Line…

A: From the star connection,

Q: When the neutral wire in a 3- phase, 4- wire system is disconnected, then: Select one: O a. None of…

A: The explanation is as follows.

Q: Q.2- Using Kirchhoff's current law, determine the unknown currents for the networks.

A: KCL, states that “The algebraic sum of all currents entering and exiting a node must equal zero

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.