A 174000W substation delivers 76000 W for 7 hours and it shut down for the rest of the day. Every 52 day of the year the station is shut down for maintenance. Calculate its percentage annual load factor     Percentage Annual Load factor=_______________

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: The mechanical power in the above power system is P=1.0 . All values are expressed in per unit.…

A: a) prefault electric power and rotor angle 1) prefault condition prefault impedance XA=0.202+0.30…

Q: Question S Question 5 of 11 A 119 kVA, three phase star connected alternator has line to line…

A: it is asked to find the excitation voltage of given alternator

Q: The number of cycles completed in one second is called as _________________. a. Peak value b.…

A:

Q: 30kV, 50MVA generator having a solidly grounded neutral and Z1 = 0.25pu, Z2=0.15pu and Z0=0.05pu.…

A: Let Zn represents the limiting reactance.  Let us also assume that the fault current is equal to 1…

Q: the frequency of the volatage generated by an alternator having 4 poles and rotating having 4 poles…

A:

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

A:

Q: Q5: A SL-G fault occurs on the low voltage side of a transformer that connects a motor to a…

A: Given data for generator, Given data for motor,

Q: A 15 MVA, 6.9 KV generator has ( X1=X2= 0.25p.u., Xo= 0.07p.u., and Xn= 0.06p.u.).

A: Given: X0 = 0.07 p.u Xn = 0.06 pu  X1 = X2 = 0.25 pu  15 MVA 6.9 KV  Formula used: If = 3EX1+X2

Q: c) On 24th May 2021, there was a fault that caused wide power outage in Ghana from 7pm to 1am, the…

A: Solution : Factors affecting Transient Stability of generator are 1)Fault clearing time :- The…

Q: 11 A 25 MVA, 11 kV, 3-phase alternator has x d = 0.25 pu, Z₂ = 0.3 pu and Zo = 0.2 pu. It's neutral…

A:

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

A:

Q: A 6 pole lap wound generator has 30 slots with 24 conductors/slot and the average emf generated in…

A:

Q: Q1a Voltage control – fault level A load bus (bus-L) is suppling from two different buses A & B via…

A:

Q: Draw the reactance diagram of the given one-line diagram below marked in appropriate per unit…

A: There will be three sequence networks in the given power system- Positive-sequence network…

Q: The volts per unit of a 60Hz,13800/460V transformer is 6.57 (a) calculate the number of primary…

A:

Q: 300 MW, 30 z generator transm ing 260 MW real power to an bus through double transmission lines. A…

A:

Q: A PWR type Nuclear power plant have a core height of ___

A: Pressurized water reactor (PWR) is the one of the type of light water nuclear reactor.

Q: The kilowatt is divided in the desired proportion between two AC generators operating in parallel by…

A:

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

A: Ans . True

Q: From figure below, , if 3 phase bolted fault occurs at point 2. Calculate i) Rating of CB's ii) Volt…

A:

Q: Can you please explain what is the purpose of SF6 gas inside teh generator circuit breaker.

A: Sulfur Hexafluoride (SF6 ) gas is used inside generator circuit breakers for its unique electrical…

Q: What are the Salient Features of Indian Grid Codes for Wind Power Generation

A: The Salient Features of Indian Grid Codes for Wind Power Generation are given below- IEGC stands…

Q: The reactance of a generator designated X" is given as 0.25 per unit based on the genera nameplate…

A:

Q: A transformer takes a current of 0.9 A and power absorbed 82 W, when its primary is connected to a…

A:

Q: A 4 pole lap wound generator has 32 slots with 28 conductors/slot and the average emf generated in…

A:

Q: The plant capacity of a three phase generating station consists of two 15,000 kVA generators of…

A:

Q: i) At the starting of the experiment with parallel operation of transformers, ______________.…

A: Given questions: At the starting of the experiment with parallel operation of transformers,…

Q: More amount of power is consumed in _________ fault.

A: In this question we will write about fault in which maximum amount of power is consumed....

Q: A three phase,Y connected, 215 V (line to line), 7.5 kW, 60 Hz, three pole IM has the following…

A:

Q: The maximum flux density in the core of a 250/3000V, 50Hz single phase transformer is 1.2 Wb/m2 . If…

A:

Q: j0.15 요 j0.15 오 j0.25 2 j0.3 2 j0.15 오 G) Loffer j0.25 2

A:

Q: CALCULATE REACTANCE

A:

Q: 3. The reactance of a generator designated X" is given as 0.25 per unit based on the generator's…

A: Xnew(p.u.)=Xold(p.u.)×New base volt ampere in  MVAOld base volt ampere in  MVA×old value of…

Q: if the core loss of 1 phase transformer at full load is 42 W, then the core loss at 25% of load is…

A: Given, 1-ph transformer has Full load core loss(Pc)= 42 watts

Q: What are Instrument Transformers? Show on a prope diagram how the primaries and secondaries of both…

A: instrument transformer :-it is a highly accurate class electrical devices .they mostly used to…

Q: A 15 MVA, 6.9 KV generator has (X1=X2= 0.25p.u., Xo= 0.07p.u., and Xn= 0.06p.u.). Determine the line…

A: Generator: A generator is a device that transforms mechanical to electrical energy. It functions on…

Q: A 50 kV surge arrester will be installed on an effectively grounded 15 MVA, 33/11 kV transformer at…

A: As we have given : Varrestor=50 kVQ=15 MVAVp=33 kVVs=11 kVInsulation=380 kVVmax=36 kV

Methods of Wiring

Electrical wiring is the way of integrating cables and wires to interconnected equipment such as fuses, switches, sockets, lights, fans, and so on to the main distribution board, which is a specific structure attached to the utility pole that ensures a constant power supply.