3. A single-phase 30KVA, 2000V/200V, 60Hz distribution transformer is used as a step-down transformer at the load end of a 2000V feeder whose series impedance is 1+j20 ohms. The equivalent series reactance of the transformer is j10 ohms referred to the high-voltage (primary) side. The transformer is delivering rated load at 0.9 power factor lagging and at rated secondary voltage. Neglecting the transformer exciting current and series resistance, determine the apparent power delivered to the sending end of the feeder.

Q: Line to ground fault has the highest probability in the power system O True False

A: Need to find true false

Q: - What is the amount of power saving in the AM-DSB-SC, when compared to other types of AM systems?

A:

Q: Lightning stroke is most common cause of current impulsive transients in power system. True False

A: Impulsive transients : It is defined as a sudden change in the electrical quantities such as Current…

Q: How does power system stability analysis play a crucial role in ensuring the reliable operation of…

A: To explain:How does power system stability analysis play a crucial role in ensuring the reliable…

Q: What is output voltage of 12V transformer used in Automatic Hand Sanitizer Machine???

A: Hand sanitizer- Proper hand sanitizer is 99.999% effective against bacterial and viruses. This must…

Q: Total demand on any power generating station is equal to sum of generator inputs sum of generator…

A: Ans- (b) sum of generator output.

Q: The power transmission lines deliver power: A) From the generator substations to the load center…

A: The power transmission lines deliver power from the generator substations to the distribution…

Q: 1) what is the Auto Transformer instrument ? 2) What are the benefits of using an Auto Transformer…

A: Autotransformer is an electrical device which is basically an transformer with only one winding. An…

Q: Draw the circuit diagram and explain the operation of power factor improvement by using (i)…

A:

Q: An 22kV, 100 MVA alternator is provided with differential protection. The percentage of winding be…

A:

Q: Define the following in details: 1. Power systems 2. Per unit systems 3. Faults 4. The protective…

A: As per the guidelines of Bartleby we supposed to answer first three subparts of the given question.

Q: The per unit impedance of a synchronous machine is 0.242. If base voltage is increased by 1.1 times,…

A: Given: Per unit impedance of a synchronous machine, Zpuold=0.242 pu Base voltage is increased by 1.1…

Q: 1. How does the load-sharing of the two transformers appear when the load changes during parallel…

A: 1.This is the case when if the two transformers are connected in parallel, then load sharing…

Q: write an objects for three-phase system with load on transformer (open and short circuit )

A:

Q: 1-The following sequence currents were recorded in a power system under a fault condition…

A: In this question we will find fault type....

Q: With a suitable diagram, describe how the process bus is connected to the  substation control and…

A: Substation control and monitoring.

Q: Neatly please 4. Draw the the two types of Compounded wiring diagram of DC Generator

A:

Q: An ammeter has a range of 0 to 5A and an accuracy of Positive or Negative 1 percentage of f. s. d.…

A: Guven,   Range of ammeter is 0 to 5 A.  Guarantee accuracy error = 1%

Q: What are the advantages and disadvantage of cascade system compared to other type of modification

A: There are 2 (or more) controllers in a cascade control system, with one controller's output driving…

Q: Distance protection is a unit protection * If was working in pair of relays False It depends on the…

A: UNIT PROTECTION SCHEME: A bus bar and transmission line, are examples of unit-type schemes that…

Q: Three fourth of the faults that take place in a transmission system is a. Zero sequence fault b.…

A: Different types of faults taking place on transmission line.

Q: In pumped hydro storage, the maximum power output in the turbine generator mode is usually greater…

A: Ans . True

Q: Which among these is the advantage of synchronous condensers? O The maintenance cost is low. O The…

A:

Q: Explain the different types of faults that can occur in a power system and their impact on system…

A: In a power system, various types of faults can occur, which are sudden, abnormal conditions that…

Q: The distribution feeder is mainly protected from the lighting, by using the process of shielding…

A: A lightning arrester is a device that protects the insulation and conductors of an electric power…

Q: question, 1. Is the load current IL [A] equal to the sum of current I1,I2 flowing to each…

A: Both the transformers are of equal rating. Same input is connected to the primary windings of both…

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

A:

Q: Voltage fluctuations will be there for consumers at distant end in Ring feeder O Radial feeder O…

A: In this question we will write in which feeder voltage fluctuations is there at consumers…

Q: What is water circulating system in hydro conventional energy system.

A:

Q: Match the items in List - I with the items in List - II and select the correct answer using the…

A: The list in the table,

Q: Explain the construction, operation of dynamometer type wattmeter with necessary diagram.

A: ➢ Constructional details of dynamometer type wattmeter:-  • Fixed Coils (F1 & F2): fixed coil is…

Q: Using NEC: What is the size of a generator feeder, with a 100A OCPD, single phase, 20KW, 120/240V,…

A:

Q: One of the major threats due to electrical accidents is

A: There are several threats due to electrical accidents but obviously there are few major threats…

Q: How does grid synchronization work in interconnected power systems?

A: The question is about grid synchronisation.

Q: Two 36 cell PV modules are connected in series. One is shaded and the other is fully illuminated,…

A:

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.