A three phase, 600kVA, 3.3kV star connected S.G having ????= 0.41Ω/phase. Find the synchronous reactance of generator if the full load of unity power factor is suddenly removed causing the terminal voltage to be increased by 5%.
Q: Draw the relevant diagram and label all entity values of the power system as described above. (b)…
A:
Q: A single phase a.c. generator supplies the following loads : (a) Lighting load of 40 kW at unity…
A:
Q: A 3-phase, 420 V, 60 Hz, Y-connected synchronous generator, with a synchronous reactance of 1.20 Ohm…
A: As we have given: VL=420 Vf=60 HzXs=1.2 ΩZs=j1.2 Ωδ=30°Pout=110 kW Step 1: Find E As we know that,…
Q: Consider the following power system model with the following entities: i. A generator generates a…
A: "According to Company policy we need to answer for only the first three sub-parts of a question, if…
Q: Two 300kVA, 1000V, 50Hz alternators operating in parallel to supply a load of 500KW at UPF. 60% of…
A: generator rating is given as P=300 kVA, 1000 V, f=50 Hz Total load=500 kW at unity power factor 60%…
Q: 5. A 3-phase 11kV, 10MVA, Y-connected synchronous generator has synchronous impedance of (0.8+j8) 2…
A: Open circuit voltage is E= 14kV (sending end voltage) At loaded condition output voltage is V=…
Q: Solve the following problems applying the Pythagorean Principle and check the result using the…
A: This question belongs to electrical machine . It is related to synchronous generator . It is based…
Q: Three phase synchronous generator has following characteristics: 50 Hz, 11 500 VLL, Y connected,…
A:
Q: The terminal voltage of a 3-φ generator is 19053 V, line-to-line. The load draws a current of 3150…
A: To find the total reactive power, Q delivered by the generator
Q: When a generator is connected to infinite bus-bars, its frequency and terminal voltage are fixed…
A: True
Q: d. What are the line currents (laa, IbB, lec)? e. What real, reactive and apparent power does the…
A:
Q: Solve the following problem: A THREE-PHASE GENERATOR SUPPLIES THREE LOADS IN PARALLEL BY MEANS OF A…
A:
Q: Q1 (a) A 3 phase induction motor operating at rated power can be represented by a balanced delta…
A: Note: We are authorized to answer one question at a time since you have not mentioned which question…
Q: Q1 (a) A 3 phase induction motor operating at rated power can be represented by a balanced delta…
A: As per our company guidelines we are supposed to answer only first 3 subpart kindly repost other…
Q: A 3 phase 300V, delta connected alternator has a synchronous impedance of (0+j10) ohm per phase. IF…
A:
Q: 3. A 3-0 star-connected alternator is rated at 1600 kVA, 13,500 V. The armature effective resistance…
A:
Q: A 50 Hz synchronous generator having inertia constant H = 9.94 MJ/MVA and a transient reactance of…
A: In this question we need to find a generator voltage and power angle equation for the given power…
Q: A three-phase star-connected alternator is rated at 1.6MVA, 13.5KV. The per phase armature effective…
A:
Q: Q1 (a) A high voltage 3 phase induction motor operating at rated power can be represented by a…
A:
Q: The effective resistance and synchronous reactance of a 100 kVA, 440 V single phase alternator are…
A: Let E= Generated voltage across the synchronous generator V=Terminal voltage across the generator…
Q: A three-phase generator is rated 38 MVA, 16.4 kV. If its reactance is specified as 10%, then the…
A: i have explained in detail
Q: A 5000 kVA, 6600 V , 3 - phase , star connected alternator has a resistance of 0.75 ohm per phase.…
A: Given: A 5000 kVA, 6600 V, 3-phase, star connected alternator has Ra=0.075 Ω/phase Current, I=500 A…
Q: A 25 kVA, 240 V single phase source supply the rated power at the rated voltage to a motor at 0.8…
A: As we have given : S=25 kVAV=240 Vcosϕ1=0.8cosϕ2=0.9
Q: A 3 phase star connected alternator is rated at 1600 kVA, 13500V. The armature effective resistance…
A: we need to determine voltage regulation for giving power factors.
Q: In an alternator delivering lagging pf load, the excitation emf leads terminal voltage by the power…
A: 1. In an alternator delivering lagging power factor load the excitation emf leads terminal voltage…
Q: A 1,5 MVA, 3.3 kV, 40 pole, three-phase sta connected asytnchronous alternator has reactance of Xd =…
A: Alternator: Electrical Generator is an energy conversion device which converts mechanical energy to…
Q: b) A 4 poles, 50HZ ,Y-connected three phase induction phase equivalent circuit parameters of ( R1=…
A: Given P =4 f =50 Hz R1 =R2 =0.12 X1 =X2 =0.6 Xm =12 ohm Slip s =0.03 Rotor current I2 =20∠0° A
Q: 2. A 60 kVA, three-phase, 50-Hz, Y-connected, synchronous generator is designed to supply a full…
A: In this question we will find voltage regulation of generator....
Q: The terminal voltage of a 3-φ generator is 19053 V, line-to-line. The load draws a current of 2727…
A: To find the total apparent power , S of a 3- phase generator Given : line to line terminal voltage…
Q: A 250 kVA,480 V,3-phase,4 pole, 60Hz synchronous generator with a synchronous reactance of 099…
A: The per-phase equivalent voltage of the synchronous generator is, Vt=E3E=480 VVt=4803Vt=277.13 V…
Q: A 1-phase alternator has a nameplate rating of 380V, 60Hz. If the equivalent impedance of the…
A: Here voltage is given as 380 voltage and power factor is 0.8 leading.
Q: 3. A single phase motor draws 20 kVA at 0.70 lagging power factor from a 120 V source. The PUD…
A: Load current, IL=SV×cos∅Active power, P=S×cos∅Reactive Power, Q=S×sin∅
Q: 13. A 25 kVA, 3-phase, Y-connected, 400 V synchronous generator has a synchronous impedance of 0.05…
A:
Q: X₂ = 0.2 E оздо X'a=0.3 1 10 10 XL1 = 0.3 XL2 = 0.3 V = 1.0 A 50Hz synchronous generator having…
A:
Q: Find the stator winding voltage of a three-phase star connected 5500 V synchronous motor having…
A: Given- Line voltage VL=5500 V. 3-phase star connection. Synchronous reactance per phase =20 Ω. To…
Q: A 500 MW, 3-phase, Y-connected synchronous generator has a rated voltage of 21.5 kV at 0.85 p.f. The…
A: Answer (B) 15.79 kA Explanation Three phase power in a 3 phase circuit is: P3ϕ=3VLILcosϕ Given,…
Q: A 3-phase, 30 MVA, 33 kV alternator has internal reactance of 4% and negligible resistance. Find the…
A:
Q: A 3-phase generator delivers power to a 2400 KVA (total), 16KV (line-to-neutral) load h a lagging…
A: Given:Load Power=2400KVALoad Voltage= 16KVP.F=0.8 laggingSynchronous reactance(XS) = j100Ω
Q: A three-phase generator is rated 40 MVA, 13.8 kV. If its reactance is specified as 6%, then the…
A: In this question we will find actual importance with given data...
Q: 17 A3-phase generator rated 3000 KVA, 20 kV, 900 r/min, 60 Hz delivers power to a 2400 KVA, 16 kV…
A: In this question, We need to determine the value of voltage per phase if load of the system is…
Q: 5. A 3¢ synchronous motor takes 52.5 A at power factor of 0.8 leading from a 400V line. If the…
A:
Q: 2. A 400-V, 3-phase induction motor load takes 900 kVA at a power factor of 0.707. Calculate the kVA…
A: Case I S= 900 KVA PF1= 0.707 PF1 = cos ϕ1 = 0.707 Φ1= 45° Real power P1 = S * PF1 = 900k * 0.707 =…
Q: A small industrial plant draws an average load of 122 A at 0.73 power factor lagging from the…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: Q19. A 3-phase, 440 V, 50 Hz, Y-connected synchronous generator, with a synchronous reactance of…
A:
Q: HW 3: A 6600V, 3-ph, Y-connected alternator has a synchronous impedance of (0.4+j6) ohm per phase.…
A:
Q: Consider Y-Y connected Ac generator with numbers of turn per phase of 150 turns. find the tax per…
A: In this question, We need to choose the correct options What is flux to induced line voltage= 850V…
Q: 1) A 480V, 60HZ, 6-pole, 3-phase, A-connected IM has the following parameters: R1=0.4612, R2=0.258…
A: Dear student you posetd two question with multiple subparts.we have limited time to solve your…
Q: A 20 MVA, 3-phase, star-connected, 50-Hz, salient-pole has X,= 1 p.u.; X,=0.65 p.u. and R, =0.01…
A:
Q: A 1500 kVA, star-connected, 2300 V, 3-phase, salient-pole syn- chronous generator has reactances X4=…
A: Evaluating the phase voltage at the load:
Q: HW 3: A 6600V, 3-ph, Y-connected alternator has a synchronous impedance of (0.4+j6) ohm per phase.…
A:
A three phase, 600kVA, 3.3kV star connected S.G having ????=
0.41Ω/phase. Find the synchronous reactance of generator if the full load
of unity power factor is suddenly removed causing the terminal voltage to
be increased by 5%.
Step by step
Solved in 2 steps with 2 images
- Draw a complete equivalent circuit of one phase only of a synchronous generator. Then draw the phasor diagram for a unity power factor. Assume the phase resistance is ignoredThe reactance of a generator is given as 0.1 pu based on the generator of 17 KV, 300 MVA. Determine the pu reactance on a base of 17 KV, 250 MVA. New pu reactance is.......Two identical three-phase Alternators A and B share equally a load of 10 MVA at 33 KV and 80% lagging power factor. The synchronous reactance of each generator is 4 ohms per phase and the armature resistance is negligible. Alternator A has its field excitation adjusted to carry a25 amperes at lagging power factor. What is the current delivered by Alternator B ?
- a syn A: A sylienfonotus generator of 100 MVA, 22 kV, and 0.25 pu transient reactance supplies a motor of 50 MVA, 22 kV, and 0.2 pu transient reactance. The motor is drawing 40 MW at 0.8 power factor leading and terminal voltage of 21.9 kV. The line connecting them has a reactance of 0.05 pu on a base of 100 MVA. Find the transient currents in the generator, the motor, and the fault when a 3-ph fault occurs at the motor terminals. Take SB = 100 MVA, VB = 22 kV, and use the internal voltages %3D %3D of the machines method.A synchronous generator runs at 250 rpm and generators at 60HZ. There are 240 slots each containing 5 conductors arranged in full-pitched winding for three-phase star connection. All the conductors of each phase are in series and the flux per pole at no-load distributed sinusoidally over the pole pitch is 2.5 x106 Maxwell. What is the emf induced in each winding and the terminal voltage?3 X 0.1 1 2 XL = 0.2 to Eato oto O X = 0.1 X = 0.1 Above is the one-line diagram of a simple power system. Each generator is represented by an emf behind the subtransient reactance. All impedances are expressed in per unit on a common base. All resistances and shunt capacitance are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A symmetrical fault occurs at bus 1 through a fault impedance Z, =j0.08 per unit. a) Using Thevenin's Theorem, determine the impedance to the point of fault and the fault current in per unit. (2 Marks) b) Find the bus voltages and line currents during the fault. (2 Marks)
- 2. A synchronous generator is connected to an inductive load, please draw phasor diagram to show the relationship between the internal generated voltage of the generator and the terminal voltage across the load. If the same generator is connected to a capacitive load, please draw phasor diagram to show the relationship between the internal generated voltage of the generator and the terminal voltage cross the load again. Explain the difference of the terminal voltage responses at these two types of loads.two synchronous generators are connected in parallel, feeding a load together. the frequency of the first generator in the no-load State is 52 Hz and the slope of the characteristic is 1 MW/Hz. the total power of the load fed by these two generators is 2.5 MW and the power coefficient is 0.6 inductive. by drawing the characteristic curve of the system;a) what is the frequency of the system when the load in question is fed, and how do the two generators share the load between themselvesb) if a load of 0.5 MW is added to the system, find the operating frequency of the new system and the powers given by each generatorc) if a second load of 0.5 MW is connected to the system, the idle operating frequency of the second generator is increased by 0.5 Hz, what happens to the operating frequency of the system and the power values given by the generatorsIf a 3-phase short circuit occurs at the terminals of an alternator, the current in the armature circuit increases suddenly to a large value. Select one: True False
- A three-phase synchronous generator is being used as a source of power for a farm in a remote area of Sindh. The apparent power rating of this generator is 100 KVA and the line to line voltage is 3000 V at 50 Hz. The configuration is star. When the terminals of the alternator are short-circuited, and a field current of 40 A is applied, a short circuit current of 200 A flows where when the terminals are open-circuited, with the same field current 1040 V are measured across the terminals. Calculate the voltage regulation for fully loaded conditions having the PF of both 0.8 leading as well as lagging. Use phasor diagrams. The effective armature resistance of this generator is 0.2 ohms. (Hint: Synchronous Impedance = (O.C Voltage/phase) / (S.C Current/phase))A 9.9 kV, Y-connected, 3 phase alternator has a synchronous reactance of 8 ohms per phase and negligible resistance. At a certain field current the armature is known to induce 8.2 kV per phase. Calculate the power that can be developed by the alternator at this excitation.A single-phase synchronous generator has a rated output of 500 kVA at a terminal voltage of 3300 V. The stator winding has a resistance of 0.6 ohms and a synchronous reactance of 4.0ohms. Calculate the percentage voltage regulation at a power factor of 0.8 lagging. Sketch the phasor diagram.