A long-shunt compound generator supplies a terminal voltage of 220 V when delivers 110 A. Determine: a. Induced e.m.f. b. total power generated c. Distribution of this power. Given that shunt field, series field, divertor and armature resistance are 96 2, 0.025 2, 0.06 2 and 0.045 2 respectively. Rangat (a h omno
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- A long-shunt, four pole, 1500-W, 250-V, duplex wave-wound DC compound generator with the rated speed of 500 r.p.m., has a shunt field resistance of 100 Ω, a series field resistance of 0.05 Ω and an armature resistance of 0.2 Ω. If the flux per pole is 48.798 mWb and a total of 620 conductors, calculate the following: (a) the generated voltage, (b) the field currents, (c) the power generated in the armature.A 150-kW 250-volt compound generator is connected long shunt. If the shunt field resistance is 20 ohms, what is the series field-current at full load? (Ans.: 612.5 A) write diagram, given, etcIn a long-shunt compound generator, the terminal voltage is 220 Vwhen generator delivers 110 A. Determine (a) induced emf and (b)total power generated. Given that shunt field, series field,diverter and armature resistances are 90 Ω, 0.025 Ω, 0.04 Ω and0.03 Ω respectively.
- Determine the e.m.f. generated of a short-shunt compound generator supplies 100 A at 400 V. If the field resistance, Rf =20 Ω, and the armature resistance, Ra =0.06 Ω. If you know that the volt drop in series winding is 2 VA three-phase Y-connected synchronous generator has rated values of 90 MVA, 15 kV, 0.6 reverse power factor, 50-Hz. Synchronous reactance 1.6 ohmsand armature resistance is neglected. According to thisa) Find the induced voltage (EA) and armature current (LA). b) Find the voltage regulation.c) If this generator was operated at 60 Hz with the same armature and field losses as at 50 Hz; What would be the voltage, apparent power and reactance of the generatorA 20 kW, 440-V, short-shunt, compound d.c. generator has a full-loade fficiency of 87%. If the resistance of the armature and interpoles is 0.4Ω and that of the series and shunt fields 0.25 Ω and 240 Ω respectively, calculate the combined bearing friction, windage and core-loss of the machine. [Ans. 725 W]
- Problem: The field current of a 100-kW, 250V shunt generator is 5A when delivering power at rated terminal voltage and rated load current. The combined armature and brush resistance is 0.1 ohm. 1.)Calculate the generated power in kW. 2.)What is the electrical efficiency? * Formatt: given required solution answerQ1) A long shunt compound generator is supplying a load 100 A at a terminal voltage of 220 V. The armature, series and shunt field resistances are 0.2 2, 0.06 2 and 100 Q respectively. The iron loss is 400 W and the rotational loss is 500 W. a) Calculate the variable and constant losses. b) Find the power required at the input of the generator. c) Determine the efficiency of the generator. d) If the load current is reduced to 60%, determine the variable and constant losses for this condition. e) Determine the efficiency of the generator if the load current is reduced to 60% at a terminal voltage of 220 V.A shunt generator has a no-load terminal voltage of 270 and a voltage of 245 when it delivers 180 amp. Assume a straight-line characteristic and determine the following: the voltage when the current is 120 amp and What is the equivalent load resistance under this condition?
- A shunt generator supplies a 31kW load at 230V through cables of resistance, R = 122mΩ. If the field winding resistance, Rf =50Ω and the armature resistance, Ra =51mΩ. Determine the following below: The terminal voltage is, Answer and unit for part 1 The e.m.f. generated in the armature is,A 230-kVA, 1100 V, Δ-connected, three-phase, synchronous generator has an average resistance of 0.3 Ω between any two of its terminals. With a particular field excitation and at its rated speed, the no-load voltage was 1000 V and the short- circuit current in each line was 121.24 A. Determine the synchronous impedance of the generator. If the rotational loss is 12 kW and the generator delivers the rated voltage at 80% rated load and 0.866 power factor lagging, determine its voltage regulation and efficiency using the per-unit system Explain each step pleaseA 230-kVA, 1100 V, Δ-connected, three-phase, synchronous generator has an average resistance of 0.3 Ωbetween any two of its terminals. With a particular field excitation and at its rated speed, the no-load voltage was 1000 V and the short-circuit current in each line was 121.24 A.Determine the synchronous impedance of the generator. If the rotational loss is 12 kW and the generator delivers the rated voltage at 80% rated load and 0.866 power factor lagging, determine its voltage regulation and efficiency using the per-unit system