3. A long-shunt compound generator delivers a load current of 50 A at 500 V and has armature, series field and shunt field resistances of 0.05 Q, 0.03 Q and 250 0 respectively. Calculate the generated voltage and the armature current. Allow 1 V per brush for contact drop.
Q: Q: A 8-pole lap-wound dc generator is designed to have an average air gap flux density of 0.8 T. The…
A:
Q: Determine the e.m.f. generated of a short-shunt compound generator supplies 100 A at 400 V. If the…
A: To solve above problem one should know the structure of short shunt compound generator, In short…
Q: A 500 V, 200 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000…
A: Given Data: Induced emf Eg0 = 480 V Speed N0 = 1000 rpm
Q: Q: A8 pole short shunt DC compound generator ruining at 800 r.pm , supplies a load of 0,255 KA at…
A:
Q: A 110-V shunt generator has a full-load current of 100 A, shunt field resistance of 55 Ω and…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: QI) The induced voltage of a shunt generator is 254 V. When the machine is loaded, the terminal…
A: As per Bartleby guidelines we are allowed to solve only one question please ask the rest again.
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: Q1) A long shunt compound generator is supplying a load 100 A at a terminal voltage of 220 V. The…
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Q2) A 15 kW shunt generator having an armature circuit resistance of 0.4 ohm and a field resistance…
A: GIVEN , IRON LOSS = 1KW AND ARMATURE RESISTANCE 0.4 OHM SHUNT FIELD RESISTANCE 100 OHM WE WILL…
Q: A 250 V shunt generator has a full load armature current of 40 A, under these conditions the losses…
A: According to the question we have to find the value of the maximum efficiency.
Q: 2. A 110 V shunt generator has a full-load current of 100 A, shunt field resistance of 55 ohms and…
A: GivenTerminal voltage= 110 vFull load current IFL=100 AShunt field resistance Rsh=55 Ωconstant…
Q: (Draw the Circuit Diagram) A self-excited shunt generator has a field resistance of 60 ohms. When…
A: Given a self- excited shunt generator with Field resistance(Rf)= 60 Ω Terminal voltage(Vt)=120 v…
Q: 3. An 8-pole lap-connected d.c. shunt generator delivers an output of 240 A at 500 V. The armature…
A:
Q: A long-shunt, compound generator delivers a load current of 50 A at 500 V and the resistances of…
A:
Q: A long-shunt, four pole, 1500-W, 250-V, duplex wave-wound DC compound generator with the rated speed…
A: we need to find out (a) the generated voltage, (b) the field currents, (c) the power generated in…
Q: A 50-kW, 250-V short-shunt compound generator has the following data: R, = 0.06 2, R = 0.04 2, and…
A:
Q: Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm , supplies a load of 0,255 KA at 230…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 N…
A:
Q: Q1) A long shunt compound generator is supplying a load 100 A at a terminal voltage of 220 V. The…
A: long DC shunt compound generator, i.e shunt field winding connect after series field winding has…
Q: A long shunt de generator supplies 8 kW at voltage of 250 V. The armature resistance, shunt field…
A:
Q: Home workl: A short-shunt compound generator delivers a load current of 30 A at 220 V, and has…
A: Since you have asked multiple questions in a single request, we will be answering only the 1st…
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: 250 V shunt generator has a full load armature current of 40 A, under these conditions the losses…
A: Given data : Vt=250VIa=40AFixed windAage losses,WF+W=200 wattsShunt field Wshunt=100 wattscore loss,…
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A: Compound DC generator, Terminal voltage V= 250V, Armature resistance Ra= 0.4 ohm, series field…
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: QI) The induced voltage of a shunt generator is 254 V. When the machine is loaded, the terminal…
A: Step 1 Induced voltage E = 254 V Terminal voltage Vt = 240 V Armature resistance Ra = 0.04Ω…
Q: A 20 kW, 440 V, long shunt, compound dc generator has a full load efficiency of 87 %. If the…
A:
Q: A 110-V shunt generator has a full-load current of 100 A, shunt field resistance of 55 ohms and…
A:
Q: 6) A 15kW shunt generator having an Armature circuit Resistance of 0.2Ω and a field resistance of…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 N…
A:
Q: A 110V shunt generator has a full load current of 100A, shunt field resistance of 55 ohms and…
A:
Q: A 250 V, compound generator has armature, series field and shunt felid resistance of 0.4 Q, 0.2 Q…
A:
Q: A 110-V shunt generator has a full-load current of 100 A, shunt field resistance of 55 Ω and…
A:
Q: Q2: A 20 kW, 440-V, short-shunt, compound d.c. generator has a full-load efficiency of 87%. If the…
A: The circuit diagram for the given generator is given by
Q: A short-shunt compound DC generator supplies a current of 100 A at 220 V. If the resistance of the…
A: As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the separate…
Q: A short shunt compound dc generator supplies a current of 100 A at a voltage of 220 V. If the…
A: A DC machine is classified in two types. DC motors DC generators Above question is based on DC…
Q: The field and armature resistance of a four-pole shunt generator with lap-connected armature is 50 ꭥ…
A:
Q: Q: A 8-pole lap-wound dc generator is designed to have an average air gap flux density of 0.8 T. The…
A: Given: An 8-pole lap wound DC generator is designed to, Ra=0.3ΩVbd=2VB=0.8T There is a slight…
Q: A generator with 1.6 Ohm armature circuit resistance has a terminal voltage of 125V when the…
A: To find the terminal voltage of generator when armature current is 18 Amp. Given generated voltage…
Q: Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm , supplies a load of 0,255 KA at 230…
A: The new speed is same as initial speed since the percentage change in flux and genrator emf is same…
Q: hunt generator delivers 195 A at a terminal voltage of 250V. The armature resistance and the shunt…
A: Efficiency is output to input ratio Here we have mechanical input= electrical induced power + mech…
Q: Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm, supplies a load of 0,255 KA at 230…
A:
Q: the output of a shunt generator is 25 kw at the terminal voltage of 200V. the armature resistance is…
A: Given: The output of shunt generator (PL) = 25 kW Terminal voltage = 200 V…
Q: Q: A 8-pole lap-wound dc generator is designed to have an average air gap flux density of 0.8 T. The…
A: Given: An 8-pole lap-wound dc generator is designed to have An average air gap flux density: B=0.8 T…
Q: 12. A long-shunt, compound generator delivers a load current of 50 A at 500 V and the resistances of…
A: From the long shunt compound generator
Q: (b) A DC shunt generator has a full-load current of 196 A at a terminal voltage of 220 V. The stray…
A: Given data: full load current= 196 A Terminal voltage = 220 V Stray losses = 690 W field resistance…
Step by step
Solved in 2 steps with 2 images
- A 3-phase, wye connected alternator rated at 1600 kVA, 13.5 kV. The effective armature resistance and synchronous reactance are 1.5 ohms and 30 ohms, respectively. What is the percent regulation for a load of 1280 kW at 0.80 leading power factor?A 3-Phase 10Kva, 400 V, 50Hz star connected alternator supplies a rated load at 0.8 power factor lagging. If the armature resistance per phase is 0.5Ჲ and the synchronous reactance is 10Ჲ, using the e.m.f method, estimate the alternator’s voltage regulationA short shunt compound generator supplies a load of 10 kW at 200 V through a pair of feeder and series field resistance 0.10 ohm. Armature resistance, shunt field resistance and series field resistance are 0.01 ohm, 52.2 ohms and 0.10 ohm, respectively. If the core friction and windage losses amount to 631 watts, the BHP of the driving engine is nearest to
- A 2-pole, 50 Hz, 11 kV synchronous generator with a rating of 120 MW and 0.87 lagging power factor has a moment of inertia of 12,000 kg- . Calculate the constants H and M A 4-pole synchronous generator supplies over a short line a load of 60 MW to a load bus. If the maximum steady state capacity of the transmission line is 110 MW, determine the maximum sudden increase in the load that can be tolerated by the system without losing stabilityA generator rated 1MVA, 13.8 kV 60 hz 3-phase wye connected, 6-poles has 19Ω synchronous reactance per phase and negligible resistance. The field copper loss and SPL are 15 kW and 30 kW respectively. Determine the % VR and efficiency of the generator at rated load and unity power factorCalculate for full-load and unity p.f., the natural period of oscillation of a 50-Hz, 10,000-kVA, 11-kV alternator driven at 1500 r.p.m. and connected to an infinite bus-bar. The steady short-circuit current is four times the full-load current and the moment of inertia of the rotating mass is 17,000 kg-m2. ANSWER IS [1.148 second]
- Show that an alternator running in parallel on constant-voltage and frequency bus-bars has a natural time period of oscillation. Deduce a formula for the time of one complete oscillation and calculate its value for a 5000-kVA, 3-phase, 10,000-V machine running at 1500 r.p.m. on constant 50-Hz bus-bars. The moment of inertia of the whole moving system is 14,112 kg-m2 and the steady short-circuit is five times the normal full-load value. ANSWER IS [1.33 second]Problem: A short-shunt compound generator has armature, shunt field and series field resistances of 0.5 Ω, 156 Ω, and 0.465 Ω respectively. If it supplies a load of 9 kW at a terminal voltage of 241 V, calculate the generated emf in volt. *Four decimal placeselectrical machines 3. 400 V 50 Hz, Y-connected, 6-pole synchronous generator per phase synchronous reactance 1.0 Ω at back power factor of 0.9 full load armature current 50 A, friction and wind losses 1.25 kW and core losses at 50Hz full load 1.0 kW and armature resistance and loss are neglected. The excitation current is adjusted so that the no-load output voltage is 400V. According to this; a) Calculate the rotation speed of the generator. b) find the terminal voltages at load with rated current at 0.8 back power factor and unit power factor . c) Calculate the voltage regulation of the generator for power coefficients of 0.8 back and 1.0.
- If, in a 3-φ alternator, a field current of 50Aproduces a full-load armature current of 200 Aon short-circuit and 1730 V on open circuit, then its synchronous impedance is ....... ohm.QUESTION 1:- (a) A 4-pole, 3-phase, star-connected, 50 Hz synchronous generator, with a synchronous impedance of j24.5 Ω/phase and negligible resistance, delivers 5 MW of power to a 13.8 kV busbar. At this operating point, the excitation is equal to 1.8 p.u. Calculate the phase value of the generated emf (E) and hence calculate the electrical load angle, δ, at which the machine is operating. (b) Sketch a typical operating chart for a salient pole synchronous generator and on the chart identify the following; The Apparent Power limit, The field (excitation) limit, The Real Power limit, A line which represents a constant lagging power factor, The rotor angle for operation at any given point of operation, e.g. rated power and 0.9 power factor lag. (c) A Stamford HCI534F framesize generator has been selected for a stand-alone diesel-generation application. The generator is to operate at 400 V, 50 Hz, with the self-excited (SX) excitation scheme. Datasheet information can be…A 3-phase, star -connected turbo-alternator, having a synchronous reactance of 10 Ω per phase and negligible armatureresistance, has an armature current of 220 A at unity p.f. The supply voltageis constant at 11 kV at constant frequency. If the steam admission is unchangedand the e.m.f. raised by 25%, determine the current and power factor.