A 2-pole d.c. shunt generator gave the following open-circuit characteristics when running at 1000 r.p.m. If (A) E(V) 150 The number of armature conductors 400 and the armature resistance is 0.102, the field resistance is 7002. Calculate: Ro と Rf 0 20 0.5 54 1- the residual magnetism 1 105 1.5 2 184 2.5 210 3 230 E = 3.5 244 Za 2 P 2- the voltage to which the machine will excite when run at 900 r.p.m. 3- the additional field resistance when the voltage is 190V at 900 r.p.m. 4- the speed of rotation when the excited voltage is 190V and 7002 field resistance. 5- The load current when the terminal voltage is 180V with 6002 field resistance and 900r.p.m speed. 6- The volt-lost due to armature reaction when the load current is 100A with 180V terminal voltage and 6002 field circuit resistance.

A 2-pole d.c. shunt generator gave the following open-circuit characteristics when running at 1000 r.p.m. If (A) E(V) 150 The number of armature conductors 400 and the armature resistance is 0.102, the field resistance is 7002. Calculate: Ro と Rf 0 20 0.5 54 1- the residual magnetism 1 105 1.5 2 184 2.5 210 3 230 E = 3.5 244 Za 2 P 2- the voltage to which the machine will excite when run at 900 r.p.m. 3- the additional field resistance when the voltage is 190V at 900 r.p.m. 4- the speed of rotation when the excited voltage is 190V and 7002 field resistance. 5- The load current when the terminal voltage is 180V with 6002 field resistance and 900r.p.m speed. 6- The volt-lost due to armature reaction when the load current is 100A with 180V terminal voltage and 6002 field circuit resistance.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: A 6-pole armature of a d.c. machine has 776 conductors and a flux per pole of 35 mWb. Determine the…

A: Choose the correct option Emf voltage of the DC Generator for LAP winding We know Emf E=…

Q: Q2: For BCD code perform the following, with and without complement: 1. 1000010110 is subtracted…

A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again.…

Q: The field coils of a six-poles D. C. Generator, each having 600 turns, are connected in series. On…

A: Number of poles = 6 Number of turns = 6 × 600 = 3600 Initial flux = 6 × 0.024 = 0.144 Wb. Total…

Q: 2. The field coils of a six-poles D. C. generator each having 600 turns, are connected in series. On…

A: Given that Number of poles = 6 Total number of turns = 6 × 600 = 3600 (since 500 turns per pole in…

Q: 30. A) Why is there a small emf generated in a series generator at no load? a) the residual magnetic…

A: Solve for both

Q: Q-A 6-pole lap-connected dc generator with 480 conductors has armature resistance of 0.06 ohm. If…

A: here we have to find the value of armature resistance for the wave winding.

Q: Q-A 6-pole lap-connected dc generator with 480 conductors has armature resistance of 0.06 ohm. If…

A: A DC generator- 6-pole lap connected- 480 conductors, Armature circuit resistance=0.06 ohm, To…

Q: 4. In this figure, considering the straight wire is very long, find the magnetic flux through the…

Q: 3. A d.c. generator generates an e.m.f. of 520 V. It has 2,000 armature conductors, flux per pole of…

A: Emf generated in DC generator is given as, E=(N*P*ϕ*Z)/(60*A) Where N= speed in rpm P= number of…

Q: Q1/(a) Discuss B-H curve of a ferro-magnetic material.

Q: 1000 or Eg2 135 82 = 0.8 x = 90 V 1200 Example 8.20(a). A4-pole, d.c. shunt generator with a shunt…

Q: shunt generator has an armature resistance of 12 and field resistance of 80N. Field c xty turns and…

Q: he magnetization curve of a DC machine is linear. True or False

A: The explanation is as follws.

Q: Q2: Consider the rectangular loop shown in Figure below. Calculate the torque? X Z Bo=-0.6a, +0.8a,…

A: The magnetic field, B→∘=-0.6ay+0.8az T The current flowing in the loop, I=4 mA

Q: Discuss the saturation of a permanent magnet generator

Q: (c) The magnetization curve for a separately excited DC generator is shown in Figure Q4 (c). The…

Q: A rectangular moving coil of a milliammeter is wound with 30 turns. The effective axial length of…

Q: PLEASE ILLUSTRATE AND MAKE SURE TO WRITE IT ON A PIECE OF PAPER THANK YOU SO MUCH The field coils…

A: In this question we need to find average voltage which is induced across field terminals.

Q: Given a 20 kVA, 50 Hz, 2000/200 V single-phase transformer. The parameters of the transformer…

A: Given data 20kVA, 50Hz, 2000/200V transformer R1 = 0.5, R2 = 0.005, X1 = 0.5, X2 = 0.005, Rc = 500…

Q: A 6-pole generatro has 600 conductors. If the flux per pole is 20mWb, at what speed must the…

Q: The aluminum disc of an energy meter will be located on top of Shunt magnet Select one: True False

Q: 2. The field coils of a six-poles D. C. generator each having 600 turns, are connected in series. On…

A: Given data, Number of poles P = 6. Number of turns N = 600. Main magnetic flux ϕm=0.024 wb/pole.…

Q: MH If We apply magnetism for ferromagnetic material, what will happen? What is Eddy current?

A: In the given questions we need to discuss about ferromagnetic material and eddy current.

Q: A lap-connected dc generator with 480 conductors has armature resistance of 0.06 Q. If the…

A: Given- The number of conductors Z=480, For lap winding- Armature resistance Ra=0.06 Ω. For wave…

Q: when a conductor is moved in a magnetic field current is induced in it, is it true for generators?…

A: According to faradays law , when ever there is a relative motion between magnetic field and…

Q: What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it?

A: It is given that:Number of turns in coil, Current through it,

Q: A shunt generator delivers 1,000 W at 149 V to a load. If the armature resistance is 0 ohm, and the…

Q: Problem 6.- . ) (a) A wire loop is pulled away from a current-carrying wire (see figure). What is…

A: According to Faraday's law, emf is induced when there is a change of flux linkage with respect to…

Q: A Dc shunt generator has the following O.C.C. at 800 r pm Field current (A) 0.5 1 1.5 2 2.5 3 2 3.5…

A: Given: A DC shunt generator has Speed, N=800 rpm Armature resistance, Ra=0.1 Ω Shunt field…

Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

A 2-pole d.c. shunt generator gave the following open-circuit characteristics when running at
1000 r.p.m.
If (A)
1
1.5
E(V)
105
150
210
The number of armature conductors 400 and the armature resistance is 0.102, the field resistance
is 700. Calculate:
Ro
RE
0
20
0.5
54
2
184
2.5
3
230
3.5
244
1- the residual magnetism
2- the voltage to which the machine will excite when run at 900 r.p.m.
3- the additional field resistance when the voltage is 190V at 900 r.p.m.
4- the speed of rotation when the excited voltage is 190V and 7002 field resistance.
5- The load current when the terminal voltage is 180V with 602 field resistance and
900r.p.m speed.
zud
ZP Zn
6- The volt-lost due to armature reaction when the load current is 100A with 180V terminal
voltage and 6002 field circuit resistance.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 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

Please solve thiss questionnnnn
1
H.W-3 1- Why the capacity of SG is taken in kVA and for IM is taken in kW? 2- Explain the effect of changing the load (inductive-capacitive- resistive) on SG terminal voltage? 3- Why the magnetization curve of SG is similar to the B-H curve of armature steel core? 4-Write a short report about Blondel two-axis theory for SG?
The total conductor of the direct current generator shown in the figure is 1440. The length of the armature is 30cm, the magnetic flux of a pole is 0.8 Tesla and the armature rotates at a speed of 4 m / s. Find the value of the voltage generated by the armature according to the position in the figure.
DC generatorr
A shunt generator delivers 1,000 W at 149 V to a load. If the armature resistance is 0 ohm, and the shunt field resistance is 56 ohms, calculate the shunt field current in ampere.
q4 ciii
➡ A four-pole Series connected generator has a lap connected armature with 728 conductors. If the generator supplies one hundred incandescence lamp (100 V, 60W). The series field and armature resistance are 0.2 ohms and 0.015 ohms respectively. Find the series field current.
Mention factors causing a permanent magnet generator not to generate emf
please solve quickly step by step please sir
The armature of a d.c. generator consists of 40 coils and each coil has 20 turns. When the armature is rotated at 200 rad/s in a 4-pole field structure having a flux of 5 mWb/pole and there are four paths in the armature, calculate (i) number of armature conductors (ii) the voltage between brushes generated by the armature.
× 4:03 K s.eng.ruh.ac.lk □ Û 8. Figure 4 shows the core of a simple dc motor. The magnetization curve for the metal in this core is given by Figure 5 and Figure 6. Assume that the cross-sectional area of each air gap is 18 cm² and that the width of each air gap is 0.05 cm. The effective diameter of the rotor core is 4 cm. L It is desired to build a machine with as great a flux density as possible while avoiding excessive saturation in the core. What would be a reasonable maximum flux density for this core? ii. What would be the total flux in the core at the flux density of part (i)? iii. The maximum possible field current for this machine is I A. Select a reasonable number of turns of wire to provide the desired flux density while not exceeding the maximum available current. Flux Density, B (T) 2.8 སྤྲ ཤཱ ཀ ཀཱ བྷ ཀ ཡཱཾ བ ་ 1.2 1.0 0.4 0.2 4-48cm Figure 4 0 10 20 30 40 50 100 → Depth 4 cm -0.05 cm 200 300 500 1000 2000 Magnetizing Intensity, H (A.turns/m) Figure 5 Magnetization curve…