Problem 516:Two shunt generators operating in parallel are giving a total output of 320 kW. GENERATOR ARMATURE RESISTANCE INDUCED EMF A 0.02 ohm 450 B 0.025 ohm 460 Find the bus bar voltage. Neglect shunt field current.
Q: Two similar 6,600-V, three phase generators are running in parallel on constant-voltage and…
A:
Q: Q5. When we design a 100-kW, 10000-rpm synchronous generator, should we use laminated silicon steel…
A: QN5: The synchronous generator is a 100kW and 10000 rpm machine. If we assume that it is a four-pole…
Q: Q3) In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The…
A: This question belongs to electrical machine . It is based on the concept of dc generator . Have a…
Q: A shunt generator has field resistor value Rf = 602 and no –load induced voltage rating Eo = 220V. A…
A: In this question, Find the new induced voltage if Field winding resistance increase. R= 60 ohm…
Q: A 3 phase 4MVA, 12 kV star connected synchronous generator has Zs= 0.8+J30 ohm. Using circle diagram…
A: 3φ synchronous generator,4MVA,12kVZs=0.8+j30 ΩZs=R+jX ΩR=0.8Ω
Q: A 220V short-shunt compound generator has armature resistance, series field resistance and shunt…
A:
Q: Q3: Two d.c. shunt generators connected in parallel, each having an armature resistance of 0.1 Q,…
A: Given Terminal voltage = 200 V load = 100 kW armature resistance = 0.1 ohm
Q: The voltage regulation of synchronous generator is defined as the rise in voltage when the load is…
A: Voltage regulation:- it is defined as the measure of change in the voltage magnitude between the…
Q: A shunt generator supplies a 28kW load at 220V through cables of resistance, R = 114mQ. If the field…
A: Solve as below
Q: Q3\ In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The…
A:
Q: Q1)A short- shunt( d.c) compound generator supplies (200A) at (100V) the resistances of armature…
A: 1) The short shunt dc compound generator and the equivalent circuit of the question is as follows:…
Q: A 3 phase 1.2 MVA, 10 kV star connected synchronous generator has Zs= 0.2+J10 ohm. Using circle…
A: Synchronous Generators, often known as alternators, are the most commonly used generators for…
Q: 1. How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: 1. How does loading of the Generator affect the Generator’s Terminal Voltage (VT) and Load Current…
A: It is asked the affect of loading on the Generator’s Terminal Voltage (VT) and Load Current (IL). We…
Q: The following information is given for a 300-kW, 600-V, short-shunt compound generator : Shunt field…
A: The equivalent circuit for the DC generator described in the question is shown below: Where, The…
Q: Example 8.19. A separately excited d.c. generator, when running at 1200 r.p.m. supplies 200 A at 125…
A: In this question we will find current when speed dropped for separately excited dc generator....
Q: A 280 V terminal voltage of a self-excited shunt generator has an armature resistance of 3.5ohms and…
A: Note: As field current is neglected so load current will be equal to armature current. Therefore ,…
Q: Q3) In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The…
A:
Q: A 3 phase 1.2 MVA, 10 kV star connected synchronous generator has Zs= 0.2+J10 ohm. Using circle…
A: A Synchronous Generator is also known as the alternator, the most widely used generator for power…
Q: The open-circuit characteristic of a shunt generator when driven at normal speed is as follows :…
A: given that Armature resistance Ra = 0.1Ω a) we have to find field resistance Rf on no load or open…
Q: |--E Q3) In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A.…
A:
Q: Two similar 6,600-V, 3-φ, generators are running in parallel on constant-voltage and frequency bus…
A:
Q: Problem: A 30 kW, 250 volts shunt generator is overloaded by 30% by maintaining its emf at rated…
A:
Q: A shunt generator supplies a 35kW load at 225V through cables of resistance, R = 104m2. If the field…
A:
Q: Q3) In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The…
A:
Q: short-shunt compound generator has armature, shunt field and series field resistances of 0.5 Ω, 156…
A: In this question we will find generated emf of short shunt compound generator...
Q: Q3 In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The…
A:
Q: A 220V, 5.5 kW, DC shunt generator has an armature resistance of 0.2 Q and a total field-circuit…
A: Given A dc shunt motor with specifications.we need to find the voltage regulation. Please find the…
Q: Q.3: Two separately excited DC generators are connected in parallel to supply a total load current…
A: Given For Generator G1 Ra1 =0.2 ohm Induced emf E1 =400 V Constant loss = 5 KW For Generator G2…
Q: Q3 (A) A separately excited de generator produces a no-load voltage of 115 V. find generated voltage…
A:
Q: A short shunt compound de generator supplies 100 Amperes at 110 volts. The armature resistance,…
A: Generated EMF = Terminal voltage Vt + drop in series field + drop in armature resistance . Total…
Q: 4-A long shunt compound DC generator delivers a load current of 150A at 230V and has armature,…
A: As per our guidelines, we are supposed to answer only one question. Kindly repost the other question…
Q: ase the speed slightly or decre shunt-field-circuit resistance slightly. Example 8.21(a). A 6-pole…
A: In this question we will find flux per pole , pole arc length and average air gap flux density....
Q: A shunt generator supplies a 26kW load at 220V through cables of resistance, R = 112m2. If the field…
A:
Q: A 240 volts dc shunt generator has a full-load armature current of 50 Amperes, under with condition…
A:
Q: (a) A short shunt cumulative compound dc generator supplies 8kW at 235V. The Shunt field resistance,…
A: In this question we need to find a Induced EMF and load resistance of a short shunt compund genrator
Q: (a) A short shunt cumulative compound dc generator supplies 6kW at 230V. The Shunt field resistance…
A:
Q: A shunt generator supplies a 33kW load at 200V through cables of resistance, R = 106m2. If the field…
A:
Q: Example 5: A short-shunt compound generator delivers a load current of 30 A at 220 V, and has…
A: The solution can be achieved as follows.
Q: Q1. The per-unit d-axis and g-axis reactance's of a salient-pole generator are 0.9 and 0.6…
A:
Q: 230 induced omf tion of this p ower. In a short conpound generator, the terminal voltage is…
A: Calculating shunt current If=VTRfIf=230 V92 ΩIf=2.5 A Calculating armature current…
Q: Example 26.10. A d.c. shunt generator has an induced voltage on open-circuit of 127 volts. When the…
A:
Q: A long-shunt compound d.c. generator with armature, series field and shunt field resistance of 0.5,…
A: Given data: Ra=0.5ΩRse=0.4ΩRsh=250Ω
Q: Q5) The terminal voltage (V), generated voltage (E), current (I), and synchronous reactance (jX)…
A: a) For lagging power factor
Q: (b) A synchronous generator connected with an equivalent cireuit of Figure Q4 is shown as below.…
A: Given information about a synchronous generator is: The terminal voltage under no load is VT=480…
Q: A shunt generator supplies a 20kW load at 200V through cables of resistance, R= 100mΩ. If the field…
A: Dc shunt Generator
Q: 15. A 1500 kW, 550-V, 16 pole generator runs at 150 rev. per min. What must be the useful flux if…
A:
Q: A shunt generator supplies a 33kW load at 225V through cables of resistance, R = 100mΩ. If the…
A:
Q: long shunt cumulative compound dc generator delivers a load current of 60A at 440V. The shunt field…
A: In this question we need to find a induced emf and load resistance.
Q: 11. A 20 kW, 440-V, short-shunt, compound d.c. generator has a full-load efficiency of 87%. If the…
A: As per our guidelines we have to solve 1st question So, solution for 1 st question is below.…
Q: A shunt generator supplies a 30kW load at 215V through cables of resistance, R = 110mn. If the field…
A:
Q: A separately excited D.C. generator has armature circuit resistance of 0.15 Q. When running at 900…
A: In this question, A separately excited DC generator, Armature resistance Ra= 0.15 ohm Speed N=…
Q: A shunt generator supplies a 31kW load at 230V through cables of resistance, R = 122mΩ. If the…
A: In this question we need to find a terminal Voltage and internal emf genrated by Shunt Genrator.
Q: A shunt generator supplies a 32kW load at 220V through cables of resistance, R = 128mΩ. If the…
A: A shunt generator supplies 32kW load at 220V through cables of resistance, Cable resistance R =…
Q: A shunt generator supplies a 31kW load at 230V through cables of resistance, R = 104m2. If the field…
A:
Q: Q1/ The following information is given for a 250-kW, 500-V, long-shunt compound generator: Shunt…
A: Given, the power output is 250 kW The voltage is 500 V.
Q: A short-shunt generator supplies 220A at 260V. The armature resistance is 0.15Ω, shunt field…
A:
Q: Tutorial: DC Generator Characteristics Q1. The following data refer to the O.C.C of a D.C separately…
A: DC shunt generator 1000 rpm total field resistance 200Ω armature resistance 0.8 ohm terminal voltage…
Q: Q/ dc shunt generator 4 pole with 500 condcutor , wave running at speed 1000 r.p.m the resistance of…
A:
Q: A. What is its synchronous reactance and armature resistance in ohms? B. What is the magnitude of…
A: It is given that: S=100 MVAVL=11.5 KVf=50 HzP=2Xsp.u.=0.8Rap.u.=0.012
Q: The following information is given for a 300-kW, 600-V, short-shunt compound generator : Shunt field…
A: Given data is- Shunt field resistance RSh= 75 ΩArmature-brush resistance RA= 0.03 ΩSeries field…
Problem 516:Two shunt generators operating in parallel are giving a total output of 320 kW. GENERATOR ARMATURE
RESISTANCE
INDUCED EMF
A
0.02 ohm
450
B
0.025 ohm
460
Find the bus bar voltage. Neglect shunt field current.
Step by step
Solved in 3 steps with 2 images
- For Problem 3.18, the motor operates at full load, at 0.8 power factor leading, and at a terminal voltage of 10.45 kV. Determine (a) the voltage at bus 1, which is the generator bus, and (b) the generator and motor internal EMFs.A three phase synchronous generator with negligible resistance and Xs=20 ohm has induced voltage as well as terminal voltage per phase equal to 230 V. for the load angle of 30o, power received by the bus is .........W.A short shunt compound generator has an armature, shunt field and series fieldresistances of 0.02 ohm, 80 ohm and 0.03 ohm respectively. The generator’s induced emfis 510V when the terminal voltage is 500V. How much load current is delivered underthis condition? Answer: 197.47A
- A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar at 15 kV. The generator has a synchronous reactance of 1.62 pu. It is found that the machine excitation and mechanical power input are adjusted to give E = 24 kV and power angle δ = 30◦. a) Determine the line current and active and reactive power fed to the generator terminal. b) With reference to part (a) current is to be reduced by 20% at the same power factor by adjusting mechanical power input to the generator and its excitation. Determine E, angle δ and mechanical power input. c) With the reduced current as in part (c), the power is to be delivered to generator terminal at unity power factor, what are the corresponding values of E and δ and also the mechanical power input to the generator. Per-unit values are given on machine rating as the base.A 100KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as synchronous reactance and the armature resistance is negligible and the generator is working at the full load and unity power factor then find the value of the induced emf voltage(line to line). Answer fastProblem 2 Two shunt generators A and B operate in parallel and their load characteristics maybe taken as straight lines. The voltage falls from 240V at no load to 200V at200A, while that of B falls from 245V at no load to 220V at 150A. Determine the bus bar voltage when supplying 66.9KW load. How is the load divided between two generators?
- A 100KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as synchronous reactance and the armature resistance is negligible and the generator is working at the full load and unity power factor then find the value of the induced emf voltage(line to line). 10 pointsQ/ During the test of separately excited generator the speed of rotation must be held constant and the generator field resistance must be adjusted to make the generator terminal voltage 220V at no load. True FalseA 100KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as synchronous reactance and the armature resistance is negligible and the generator is working at the full load and unity power factor then find the value of the induced emf voltage(line to line).
- A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar at 15 kV. The generator has a synchronous reactance of 1.62 pu. It is found that the machine excitation and mechanical power input are adjusted to give E = 24 kV and power angle δ = 30◦. a) Determine the line current and active and reactive power fed to the generator terminal. b) The mechanical power input to the generator is increased by 20% from that in part (a) but its excitation is not changed. Find the new line current and power factor. c) With reference to part (a) current is to be reduced by 20% at the same power factor by adjusting mechanical power input to the generator and its excitation. Determine E, angle δand mechanical power input.A 24,000 kVA, 17.32 kV, three-phase, 60 Hz synchronous reactance of 5 Ω/phase and negligible armature resistance. At a certain excitation, the generator delivers rated load, 0.8 pf lagging to an infinite bus bar at a line the line voltage of 17.32 kV. Determine the excitation voltage per phasea single-phase, 10-kVA, 200-V, generator has an internal impedance Z, of 2 Q. Using the ratings of the generator as base values, determine the generated per-unit voltage that is required to produce full-load current under the short-circuit condition.