What will happen in each of these systems to the phase voltages of the load, if one of the source phases fails open? Source Load ll Winding fails open!

Q: Three one-phase (270 / 178V) transformers are connected in star-delta to the three-phase system.…

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Q: Which of the following statements are correct for three phase circuit: A. Sum of all the three phase…

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Q: sformer 1200 KVA, 11000/2200 V, 50 Hz e reactance/phase of the primary winding ar ding values for…

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Q: In 3-phase system, the power consumed by star connected load is _______________times less than delta…

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Q: Star circuit to three-phase variable power supply. Set the resistors to a value of 300 Ω and the…

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Q: - Transformers and Special Locations 7.a. Dry-type transformers are available in what…

A: Transformer:- It is an electrical static device that is used to transfer energy from one circuit to…

Q: The compensating winding carrying the

A: The compensting winding carries the current to reduce stator field distortion.

Q: SHOW COMPLETE SOLUTION! ASAP!! two single-phase transformers are connected open-delta and deliver a…

A: Transformer: It is a static device and is used to step up and step down the voltage level while…

Q: Show how you can connect two single-phase transformers to obtain 3-phase output from a 2-phase power…

A: Conversion of 3 phase into 2 phase and 2 phase into 3 phase using two single phase transformers is…

Q: explain Cascade Control for cooling tower with suitable justification plz don't copy the answer…

A: It is asked to explain with suitable justification that Cascade Control is most suitable control…

Q: TRUE or FALSE: Since autotransformers have a common winding, the primary and secondary terminals are…

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Q: The ratings of a 3-phase circuit breaker are 1500 A. 750 MVA, 66 kV, 3 seconds. Then find (1) Rated…

A: We have an specification of a 3-phase circuit breaker.   And we have been asked to find, Rated…

Q: Three Phase Systems and Electrical Measurement Distinguish between a feeder and a distributor.

A: A power station is to provide electricity to a huge number of people. Different customer’s power…

Q: 2 In three phase star connected system the line voltage is measured between _____________ a. Y phase…

A: Given, In three phase star connected system the line voltage is measured between _____________

Q: In a 3-phase, 4-wire system, two phases have currents of 10 A and 6 A in lagging power factors of…

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Q: 17 In the figure shown, the voltage V1 the voltage V2 by. ||||||| out of phase. *

A: The Voltage waveform when represented on a same plot can be compared easily because they become…

Q: a) in star and (b) in delta to a 415 volts, 50Hz, 3-phase supply. Determine (a) Phase voltage (b)…

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Q: Explain the Balanced condition and unbalanced condition in an LVDT with a neat schematic sketch.…

A: To explain the Balanced condition and unbalanced condition in an LVDT

Q: Refer to Figure 8-31 to answer the following questions.   Assume that a line voltage of 12,470volts…

A: Analyze the given circuit, we will observe that: The primary winding of the Transformer is Delta…

Q: equivalent winding (a) resistance,(b) reactance and (c) impedance referred to the high voltage side.

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Q: Two generators operated in parallel in a generating station, as generator A has 20 KVA, 20KV, 5% ,…

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

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Q: what is the value of phase  current in  a balanced star connected system a. is equal to line…

A: As we knows that in In balanced delta or start circuits, the line voltage is equal to phase voltage,…

Q: Consider a 3-phase, 33 kV transformers with N1:N2 900:150. Calculate the secondary line voltage on…

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

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Q: WHAT IS THE POSSIBLE OBSERVATION AND CONCLUSION ABOUT SERIES–PARALLEL CIRCUIT AND DELTA WYE…

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Q: Consider a 3-phase, 33 kV transformers with N1:N2 = 900:150. Calculate the secondary line voltage on…

A: In this question we need to find secondary voltage of Transformer for the given two connection.

Q: Three single phase ideal transformers, each of rating 5kVA, 200V/400V, 50 Hz are available. The LV…

A: Delta connection: If three- single-phase winding is connected in such a way that one’s tale winding…

Q: In a star connected three-phase balanced (RYB) system, the phase angle between phase voltage ( VR…

A: In a star connected three-phase balanced (RYB) system, the phase angle between each  phase is 120°.…

Q: (a) Three sets of single-phase transformers are connected together to form a delta-wye 3-phase…

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Q: Three 25-kva transformers are connected A-A. (a) What total rated kilovolt. amperes can the bank…

A: For three single phase transformer to be connected in delta delta connection the or any 3 phase…

Q: One-line diagram of a power system is shown below. Relevant details are mentioned below. Generator:…

A: Consider the generator rating as a base. The generator rating is given as 100 MVA and 11 kV. For the…

Q: In short circuit test of a single phase transformer, the ammeter gives us rated current.  Select…

A: Given statement  In short circuit test of a single phase transformer, the ammeter gives us rated…

Q: Three Phase Induction Motor Load Test, . At what load will the efficiency be maximum

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: I) a) Current in faulted phase R & Y. b) Is the system balanced? c) What happens with the voltage at…

A: Smart Grid: A smart grid is an electricity network that uses digital communications technology to…

Q: 1) The condition for parallel operation of two 1-Ø transformers is that they should have the same A)…

A: Conditions for parallel operation of transformer: 1. The polarities of the transformers must be the…

Q: Three single phase transformers each having a 240 V primary and two 250 V secondaries, as shown in…

A: The primary voltage of the single-phase transformer is 240 V and the secondary voltage is 250 V.…

Q: What is phase angle of voltage induced in primary and secondary windings of transformers due to…

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

Q: Match the following Junction Point where one end of all three phase loads joined together Choose...…

A: In this question , we will match given statements..

Q: what are the advantages and Disadvantages Connecting transformers 3 Phase between (delta to Star)

A: Star to delta connection. In this connection, the start connection is at the primary side and the…

Q: Example 8.3 A 25 MVA, 11 kV generator with X4" = 20% is connected through a transforme bus that…

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

A: The explanation is as follows.

Q: a. Write a table consists of well- known power capacity of distribution transformers

A: As per the rules we can answer only one question, please post the remaining questions as the…

Q: 36. The essential condition for parallel opearation of two 1- transformers is that they should have…

A: In this question,  We need to choose the correct options What is the essential condition for the…

Q: 3. Prove that the three-phase system of voltages on the secondary of the Y -A transformers lags the…

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Q: TRUE or FALSE: If two identical transformers are connected in parallel and not connected to any…

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Q: In 3-phase balanced delta connected system, the voltage induced in each coil is called

A: In a delta-connected system, if the finished terminal of one winding is connected to the beginning…

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.