5. The field circuit of a 200,000W, 230V shunt generator is 8A when running full load at rated terminal voltage. If the combined brush and armature resistance is 0.03 ohm, solve for the electrical efficiency of the generator.

5. The field circuit of a 200,000W, 230V shunt generator is 8A when running full load at rated terminal voltage. If the combined brush and armature resistance is 0.03 ohm, solve for the electrical efficiency of the generator.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.1P

See similar textbooks

Related questions

Q: A 10kW, 125V long shunt compound generator has rotational losses amounting to 580W. The motor…

Q: Example: A 480-V, 60-Hz, A-connected, four-pole synchronous generator. This generator has a…

Q: Explain the external characteristis of a shunt generator and state the reasons for the drop in its…

Q: The armature resistance of a 3 phase synchronous generator rated at 4 MVA, 4000 V, 50 Hz, If the…

A: We need to find out armature resistance, from given information we will calculate resistance

Q: A 100kW, 230V, shunt generator has an armature resistance and field resistance of 0. and 57.50. If…

A: In this Question, shunt generator is given....We have to find out at what load the generator achieve…

Q: 3. A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an infinite…

A: Since you posted the multiple questions. So I am solve first 3 questions for you

Q: Q: In a long-shunt compound generator, the terminal voltage is 220 V when generator delivers 500 A.…

A: Given Data: Vt = 220 V IL = 500 A Rsh = 110 ohm Rse = 0.002 ohm Ra = 0.01 ohm

Q: The following information is given for a Long Shunt connected Flat Compound Generator: Power rating…

A: Given Long shunt connected flat compound generator Power rarting =100 kwTerminal voltage Vt=250…

Q: Q1: A long shunt compound generator, the terminal voltage is 250 V when generator delivers 140 A.…

Q: A self cxcuted doc generator has the following chata : lokw . 240v Under rated conditions , the…

A: Given Data: Generator data = 10 kW , 240 V shunt filed current is 4.8 percent of rated load current…

Q: A short shunt compound DC generator supplies a load current of 10A at a voltage of 10 volts. If the…

A: Given: A short shunt compound DC generator in which IL=10AV=10VRa=0.001ΩRsh=1ΩRse=0.00Ω

Q: The armature resistance of a 3-phase, delta connected, rated speed of 1000 rpm and 6-pole…

A: Given data about a three phase delta connected synchronous generator is Synchronous speed Ns=1000…

Q: A 480-V, 60-Hz, Y-Connected synchronous generator, having the synchronous reactance of 1.04 ohm and…

A: Generator is a device to convert a mechanical energy to electrical energy. It is work on the…

Q: A 300 KW and 600 V Long shunt compound DC generator has shunt field resistance 100 2 armature…

A: There are two types of DC generators depends on the way in which their fields are excited.…

Q: A 13.8 kV, 50-MVA, 0.9 p.f., 60 Hz, four pole, Y-connected synchronous generator has a synchronous…

Q: A 3-phase, 4500 kVA, 13 kV, 50 Hz, 4-pole, star-connected synchronous generator has synchronous…

Q: A 220 V shunt generator is operated at rated load. If the driving engine is developing 15 hp, if the…

A: 1 HP = 746 Watts Developed power = induced emf × armature current. Induced emf = terminal voltage…

Q: :A 4-pole, lap-wound, long-shunt, d.c.compound generator has useful flux per pole of 0.07 Wb. The…

A: No. of poles (P) = 4 Useful flux/pole (Φ) = 0.07 Wb No. of turns in the armature (T) = 220…

Q: A 50-kW, 250-V short-shunt compound generator has the following data: R, = 0.06 2, R = 0.04 2, and…

Q: A 250-volt resistance DC generator has an armature of 0.10, shunt field resistance is 500, and…

A: Given a DC long shunt generator with, Terminal voltage, Vt=250 V. Armature resistance, Ra=0.1 Ω.…

Q: 3. A long-shunt compound generator delivers a load current of 50 A at 500 V and has armature, series…

Q: short shunt compound DC generator supplies a load of 10A at a voltage of 10 volts. If the…

A: Answer -(c) In the case of short shunt compound DC generator, generated voltage can be improved by…

Q: An 8-Pole, simplex lap wound, shunt generator has 800conductors and a flux per pole of 0.025Wb and…

Q: A shunt generator has full load current of 196Aat 220V. The stray power losses are 720W and the…

A: In this question, Find the armature resistance in the shunt Generator. All Parameters are given

Q: 1. A 100kW, 230V, shunt generator has an armature resistance and field resistance of 0.050 and…

Q: 1. A 200V de shunt generator can deliver 10 kW at half load with efficiency of 83 %. If the armature…

Q: 2. A 8-pole, lap-connected, 25kW, 250V long shunt compound dc generator has a series field…

Q: 16. A 5.2-kW 120-volt compound generator has an armature resistance of 0.28 ohm, a series-field…

A: Given machine is DC compound generator(long shunt connection). Load voltage of the generator, VL=120…

Q: seperately excited dc generator has the following data: armature resistance , 0.06 Ω; field…

Q: A 250-V dc short-shunt generator has armature, series field and shunt field resistances of 0.1234 Ω,…

A: Use short shunt generator equivalent model and KVL to find the currents Then use the values to find…

Q: Example 26.10. A d.c. shunt generator has an induced voltage on open-circuit of 127 volts. When the…

Q: Q6/ When a 50-k VA, 3-phase, 440-V, 60-Hz synchronous generator is driven at its rated speed, it is…

A: The solution is given below

Q: A 5.2-kW 120-volt compound generator has an armature resistance of 0.28 ohm, a series-field…

A: Given data Armature resistance=0.28Ωseries field resistance=0.04 ohmshunt field resistance=57.5…

Q: A 10-kW, 120-V DC series generator has anarmature resistance of 0.1Ω and a series fieldresistance…

A: Given: RS =0.05Ω,Ra =0.1Ω.

Q: 9. A 288 volt shunt generator has constant losses of 2880 Watts. The armature circuit resistance is…

A: Given.: Rf ,Ra, Vt and constant loss are given .... Calculate : armature current

Q: The field current of a 180 kw, 250 V DC shunt generator is 6 A. when running at full-load at rated…

A: Given that, Pg=180KWEg=250VIf=6ARa+rb=0.02 ohm Draw the circuit diagram for DC shunt generator

Q: 5. A 20-kW, 400-V shunt DC generator has armature and shunt field winding resistances of 0.30 Q and…

Q: A 100kW, 230V, shunt generator has an armature resistance and field resistance of 0.05Ω and 57.5Ω.…

Q: The armature resistance of a 3 phase synchronous generator rated at 2 MVA, 4400 V, 60 Hz, If the…

A: We need find out armature resistance, we will find it by given information.

Q: 2. The field circuit of a 200,000 watt, 230-V shunt generator is 6 A when running full load at rated…

Q: A 480 V, 50 Hz, Y-connected six-pole synchronous generator has a per-phase synchronous reactance of…

A: Part (a): The rotor of the synchronous generator rotates at the synchronous speed. Thus, the…

Q: A shunt DC generator has no load terminal voltage of 140V. Armature resistance is 1ohm and shunt…

A: Given data, A DC shunt generator has No load terminal voltage, V=140 V Armature resistance, Ra=1 Ω…

Q: A 20 kW, 440-V, short-shunt, compound d.c. generator has a full-load efficiency of 87%. If the…

A: In this question, A 20 kW, 440-V, short shunt, compound d.c. generator has a full load efficiency of…

Q: A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an infinite bus…

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 480-V, 60-Hz, A-connected, four-pole synchronous generator. This generator has an armature…

A: The solution is given below

Q: A three-phase, Y-connected, 220-V synchronous generator has an armature resistance of 0.22 Q/phase…

Q: A 4 pole DC shunt generator with wave wound armature having 383 conductors, has to supply a load of…

A: we will use KVL and KCL to find the armature current and generated EMF . From generated EMF we will…

Q: A 380 V line-to-line, 40 kVA, 50 Hz, 6-pole, Y-connected cylindrical rotor synchronous machine…

A: An electrical machine is majorly classified in three types: Transformers Generators Motors…

Question

SOLVE IT AT HALF LOAD

5. The field circuit of a 200,000W, 230V shunt generator is 8A when
running full load at rated terminal voltage. If the combined brush
and armature resistance is 0.03 ohm, solve for the electrical
efficiency of the generator.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

An A 20kW DC shunt generator having an armature circuit resistance of 0.8Ω and a field resistance of 140 Ω, generates a terminal voltage of 230V at full load. Determine the total iron, friction and windage losses if the efficiency of the generator at full load= 83%.
Open circuit tests carried out on a 3.5 MVA, 4.16 kV, 60 Hz, three phase star connected synchronous generator gave the following results:If (A):1015202530EL (kV):3.54.165.76.257.95In the short circuit test a field current of 20A was needed to circulate full load current. The armature winding resistance is 1.2Ω /phase, the field winding resistance is 500 Ω and the rotational loss is 250kW. Determine the power angle, the voltage regulation and the efficiency when the generator delivers rated load at terminal voltage of 4.4 kV and at 0.8 power factor leading.Draw the power flow diagram for the generator and include all values of power flows.
A 70-MVA, 69.3-kV, three-phase round-rotor synchronous generator has a synchronous reactance of 14 ohm per phase and negligible armature resistance. 1) The generator is delivering rated power at 0.87 power factor lagging at the rated terminal voltage to an infinite bus bar (Fig. 1). Determine the magnitude of the generated emf per phase and the power angle δ. 2) The generator is delivering 53.5 MW to the bus bar at the rated voltage with its field current adjusted for a generated emf of 46 kV per phase. Determine the armature current and the power factor. Is the power factor is lagging or leading? 3) Given that the generator is operating at the excitation voltage of Part (1), determine the maximum steady-state power which the machine can deliver without losing synchronism. Find the armature current corresponding to this maximum power.
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 answer
A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an infinite bus (constant voltage at 4800V) and has synchronous reactance of 20Ω per phase and negligible armature resistance. The generator is delivering 1 MW at a power angle of 30 degrees.. Calculate the following:1. Output torque of the generator2. Excitation voltage Ea3. Armature current4. Power factor5. Reactive power delivered
A three-phase, 12-kV, 60 Hz, 6 pole wye connected synchronous generator has synchronous reactance of 15 Ω per phase and negligible armature resistance. For a given field current, the open circuit voltage is 13 kV. Determine the following:(A) Terminal Voltage b) Excitation voltage EA at maximum powerc) The maximum power developed by the generator
A 480-V, 60-Hz, Y-Connected synchronous generator,having the synchronous reactance of 1.04 ohm andnegligible armature resistance, is operating alone. Theterminal voltage at rated field current at open circuitcondition is 480V.1. Calculate the voltage regulation1. If load current is 100A at 0.8 PF lagging2. If load current is 100A at 0.8 PF leading3. If load current is 100A at unity PF2. Calculate the real and reactive power delivered in eachcase.3. State and explain whether the voltage regulation willimprove or not if the load current is decreased to 50 Afrom 100 A at 0.8 PF lagging.
A 2-MVA, 4400-V, 25-Hz, Y-connected, three-phase, synchronous generator is tested at its rated speed of 500 rpm. The open-circuit voltage and the short-circuit current are 4800 V and 260 A, respectiveΩly, when the field current is 15 A and the field voltage is 120 V. The generator is designed to have a resistive voltage drop of 5% of its rated voltage per phase.Determine the synchronous impedance. (0.48 +j10.65) ΩFind (a) the voltage regulation (52.07%)when the generator delivers the rated load at the rated voltage and unity power factor, and the efficiency (90.6) if the rotational loss is 5% of power developed.
If the armature resistance of a 3-phase, 318.75 kVA, 2300-V synchronous generator is 0.35 ohms per phase, the synchronous reactance is It is 1.2 ohms. Calculate the excitation voltage and voltage regulation for the following load cases: a) Full load, back power factor of 0.8 and rated voltage. b) Full load, forward power factor of 0.6 and rated voltage.
A 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 generator
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, etc
EMachines A 100 MVA, 11.5 kV 0.8 pf lagging 50-Hz two pole Y-connected synchronous generator has a per-unitsynchronous reactance of 0.8 and per-unit armature resistance of 0.012. A. What is its synchronous reactance and armature resistance in ohms?B. What is the magnitude of the internal generated voltage at the rated conditions? What is its torque angleat these conditions?C. Ignoring losses in this generator, what torque must be applied to its shaft by the prime mover at fullload?