Question 6 Which of the following has the highest percentage of occurrence in a power networl L-L DLG 3-Phase Fault SLG

Q: 5.26 An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z, =…

A: Given, An unloaded generator with pre-fault voltage, E = 1 pu Zero sequence impedance, Zo=j0.15 pu…

Q: What would be the same results of this quesiton if the circuit was single phase 1000v?

A: If True power is single phase i.e.,P1ϕ=10kWV1ϕ=1000VI1ϕ=12.33 A

Q: A-choose the corect answer for the following: . T-Using a solid in the neutral and the earth in the…

A: First question is about the concept of grounding.   Second question is about the concept of fault…

Q: 2. A bolted short circuit occurs in the series R-L circuit of Figure I with V=18kV, f=50Hz,X=1092,…

A: The given circuit diagram is shown below: It is given that: V=18 KV=18×103 Vf=50 HzX=10 ΩR=1  Ω

Q: Which of the following is not a boundary condition for an SLG fault on phase 'a' of a power system?…

A: Since the single line to ground fault occurs on the phase a of the system the fault current of phase…

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: A 30 MVA 11 kV generator has a reactance of 0.10p.u.on its own base. Determine the per-unit…

A: Given: For the generator Sbold=30 MVAVbold=11 kVXpuold=0.1 puSbnew=50000 KVA=50 MVAVbnew=33 kV

Q: Fault currents are in quadrature with load currents when O a. resistance of the lines are neglected…

A: Resistance- Resistance in electrical system is a characteristics of material which resists electric…

Q: 5.26 An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z =…

A:

Q: For the following schematic, if a double-line ground fault occurs at node 5, calculate the currents…

A: The single-line diagram of the power system is given as For fault analysis, we consider only the…

Q: Q8. In fault analysis, the period of generator behavior is divided into |미2 categories 미3 05 미4…

A: We need to find that in cold analysis the period of generator behaviour is divided into how many…

Q: FIGURE 1 shows four generators feeding into a sectionalised busbar with a fault limiting reactor. A…

A:

Q: A 12 MVA, 132/6.6 kV, transformer having a reactance of 0.15 pu is fed from an infinite bus. The…

A: The components given in the circuit will be replaced by per unit reactance respectively. The…

Q: A Delta connection has a voltage of 560 V connected to it. how much volts is dropped Across Each…

A: Delta connected system Line to line voltage VLL  = 560V In delta connected  Line voltage = phase…

Q: Write the equation, starting at A and going clockwise for the KVL loop

A: Consider the given circuit,

Q: The faults which give rise to unsymmetrical currents (unequal line currents with unequal…

A: The above statement is incorrect or false.

Q: Single core cable design for 25 kV. The radius of conductor is 0.5 cm. The insulation material…

A: The circuit diagram for the question is as follows The electrical gradient in a cable is given by…

Q: ence components of the fault current are as Ipositive 12 p.u., Inegative and Izero The type of fault…

A: SOLVE ABOVE QUES

Q: Question (1):  (a) Prove that gmax/gmin in a single-core cable is equal to D/d. (b) Draw the key…

A: Cable wires of aluminum or cable having only a single wire are enclosed for protection this…

Q: 4. The type of unsymmetrical faults at which the sequence currents are equal( i.e ) is: a) Double…

A:

Q: Q7. For the bolted fault of solid fault the fault impedance is equal to 01 OHigh OLow

A: For the bolted fault of solid fault, the fault impedance is equal to Zero.

Q: 50 MVA, 66/11 kV,x'o.1 p.u. : о MVA, 6.3 166 kV,х'-о.05 рли. : 66 kV,X'=0.2 pu mmetrical three phase…

A: This question is related to fault analysis..In this question 3 phase fault occurs at point D..We…

Q: If a double-line ground fault occurs at node 5, calculate the currents in the generator. Use VBase =…

A:

Q: the System shown in Fige, a 3-phase fault occurs at the beginning of T.L. Determine For 1.…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: In a power system 2 % of the total occurred fault is symmetrical fault. This will be most severe due…

A: Solution The symmetrical fault is most severe in high voltage and high current.

Q: A 50 MVA, 11 KV, three phase alternator was subjected to different types of faults. The fault…

A: Alternator: It is also called as electrical generator It is used to converts mechanical energy to…

Q: Three 6.6 kV altenators of ratings 8 MVA, 2 MVA and 5 MVA have per unit reactances of O.16, 0.08 and…

A: Given:3, 6.6 kV alternator1st generator rating=8MVA, Xpuold1=0.16 pu2nd generator rating=2MVA,…

Q: A 50 MVA, 11 KV three-phase alternator was subjected to a different types of faults. The fault…

A:

Q: 26) What is the type of electrical fault shown in the diagram : (A) Three Phase. (B) Phase to phase…

A:

Q: Which of the following is the severest and has the lowest percentage of occurrence? DLG L-L 3-Phase…

A:

Q: A three phase power system has a fault level of 500 MVA and Sg = 100 MVA at a 132 kV busbar. What is…

A: Given, A three phase power system has SB=100 MVAVB=132 kV Fault level is 500 MVA.

Q: Problem 1(C)- If the fault in Problem 1(A) was a double line to ground fault a phases B and C…

A:

Q: Which of the following is not a boundary condition for an SLG fault on phase 'a' of a power system?…

A: Solution: Single line to ground fault (SLG fault) is the fault that occurs in the transmission line…

Q: For The system shown in Fige, a 3-phase fault occurs at the beginning of T.L. Determine 1.…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

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: The maximum supply  voltage (Vm)  of the  single phase transmission line is 235 V and the total…

A:

Q: Single line to ground fault of a solidly grounded generator positive sequence current is j2.5 p.u,…

A: For any  current in the neutral = 3×zero sequence current. For single line to ground fault zero…

Q: Draw the  different combination of 3 phase connection

A: The Four standard Combination are: i)Star-Star(Yy) ii)Delta-Delta(Dd) iii)Star-Delta(Yd)…

Q: Question 1 :A syhronous genarator is IS connected to a large power system and supplying 0.45 pu MW…

A: a synchronous generator is connected to a large power system and supplying 0.45 pu MW of its maximum…

Q: In wattmeter, coil is connected in parallel.

A: Due to guidelines I can solve only one question at a time . If you want another solutions also you…

Q: The negative sequence current of a solidly grounded generator for single line to ground fault is j…

A: All positive ,negative and zero sequence in single to line fault is equal

Q: 3. The most famous fault in a power system is a) Symmetrical three phase fault b) Single line to…

A:

Q: A 3-phase 33 kV, 37.5 MVA alternator is connected to a earth fault on one phase at the remote end.…

A:

Q: H BRIDGE USING 2 RELAYS AND IDENTIFY THE PARTS

A: H bridge using two relays.

Q: A 3-phase, 11 kV, 25 MVA generator with X, 0-05 p.u.. X, = 0.2 p.u. and X, = 0-2 p.u. is grounded…

A: We have a 3-phase generator as shown in figure. With given data, Zero sequence reactance (X0) = 0.05…

Q: Overcurrent devices are generally not permitted on the ____ conductor. a. ungrounded b. phase c.…

A: Overcurrent devices are generally not permitted on the ____ conductor.

Q: Branch - circuit conductors must have an ampacity not less than? Served.                         A…

A: According to the NEC codes, there are two code language such that, 210.19(A)  (a) The branch circuit…

Q: A generator is having an impedance of 0.93 p.u., before fault occurs in it. What is the possibility…

A: During  a fault,high current passes from the generator as compared to normal operating procedures.

Q: In a three phase - four wire star connected system, the three outer wires are called as

A: In three phase -4 wire star connection system the three outer wire are