Reprinting some classics

Posted on April 30, 2021 by The Mitr

Edit: Thanks for all the positive responses. Due to the lockdown of the second wave, the printing plans have got delayed a bit, but we should have some updates this month.

Posted in books, meta | 45 Comments

Geometry – Shuvalova

Posted on October 20, 2021 by The Mitr

In this post, we will see the book Geometry by E. Z. Shuvalova.

About the book

The book provides a comprehensive treatment of basic geometrical concepts for high schools. The first chapter deals with properties of triangles. Chapter 2 gives a comprehensive introduction to structure of solid geometry. The chapter on parallelism in space details the concept in various contexts. Next three chapters dal with space, vectors and planes and their properties including dihedral and polyhedral angles. The last few chapters treat solids, polyhedrons and their properties such as areas volumes and sections by planes. There are worked problems and exercises for each chapter.

The book was translated from Russian by Leonid Levant and was published in 1980 by Mir.

Credits to the original uploader.

You can get the book here.

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Symbols Used in the Book 9

CHAPTER 1. BASIC RELATIONS BETWEEN THE ELEMENTS OF AN ARBITRARY TRIANGLE. SOLVING OBLIQUE TRIANGLES

Sec. 1. The Law of Sines 11
Sec. 2. The Law of Cosines 13
Sec. 3. Expressing the Tangent of a Half-Angle in Terms of the Sides of a Triangle and Radius of the Inscribed Circle (or the Incircle) 16
Sec. 4. Solving Oblique Triangles 17
Sec. 5. Measuring Distances Between “Inaccessible” 20
Sec. 6. Other Problems on Solving Oblique Triangles 23
Sec. 7. Worked Problems 28
Problems to Chapter 4 32

CHAPTER 2. LOGICAL STRUCTURE OF THE COURSE OF SOLID
GEOMETRY

Sec. 8. Structure of the Course of Solid Geometry. Notation and Terminology 36
Sec. 9. Axioms of Belonging 38
Sec. 10. Axioms of Distance 40
Sec. 11. Axioms of Order 42
Sec. 12. Axiom of Plane Mobility 45
Sec. 13. Axiom of Parallelism 47
Sec. 14. Corollaries Following from the Axioms 48

CHAPTER 3. PARALLELISM IN SPACE

Sec. 15. The Relative Position of Two Straight Lines in
Space. The Relative Position of a Plane and a Straight Line in Space 50
Sec. 16. Parallelism of a Straight Line and a Plane 51
Sec. 17. Parallel Planes 52
Sec. 18. Direction in Space. The Angle Between Two Lines 55
Sec. 19. Parallel Projecting 58
Sec. 20. Representation of Figures in Solid Geometry 61
Sec. 21. Worked Problems 63
Problems to Chapter 3 66

CHAPTER 4. TRANSFORMATION OF SPACE. VECTORS

Sec. 22. Transformation of Space 68
Sec. 23. Translation in Space 69
Sec. 24. The Vector Defined 70
Sec. 25. The Sum of Vectors 72
Sec. 26. Subtraction of Vectors. Multiplication of a Vector by a Number 75
Sec. 27. A Linear Combination of Vectors. The Conditions of Collinearity and Coplanarity 78
Sec. 28. Scalar Product of Vectors 81
Sec. 29. Arithmetic Properties of a Scalar Product 83
Sec. 30. Vector Product of Vectors 85
Problems to Chapter 4

CHAPTER 5. PERPENDICULARITY IN SPACE. DIHEDRAL AND POLYHEDRAL ANGLES

Sec. 31. A Perpendicular to a Plane 91
Sec. 32. An Inclined Line and Its Projection on a Plane. The Distance from a Point toa Plane 92
Sec. 33. The Theorem on Three Perpendiculars 94
Sec. 34. The Angle Between an Inclined Line and a Plane 97
Sec. 35. Dependence Between Parallelism and Perpendicularity of Straight Lines and Planes 98
Sec. 36. The Distance Between Skew Lines 101
Sec. 37. The Triple Product of Three Vectors. The Test for Coplanarity of Three Vectors 102
Sec. 38. Dihedral Angles 104
Sec. 39. The Angle Between Planes. Perpendicular Planes 106
Sec. 40. Orthogonal Projecting 108
Sec. 41. The Length of a Projection of a Line Segment. The Area of a Projection of a Plane Polygon 110
Sec. 42. The Area of a Projection of an Arbitrary Plane 113
Sec. 43. Polyhedral Angles 114
Sec. 44. Worked Problems 118
Problems to Chapter 5 123

CHAPTER 6. THE COORDINATE METHOD

Sec. 45. Rectangular Coordinate System 127
Sec. 46. Expressing a Scalar Product of Vectors in Terms of Their Coordinates. The Equation of a Plane 132
Sec. 47. Expressing the Vector Product of Two Vectors in Terms of Their Coordinates 135
Sec. 48. Expressing the Triple Product of Three Vectors in Terms of Their Coordinates 138
Sec. 49. Worked Problems 138
Problems to Chapter 6. 145

CHAPTER 7. POLYHEDRA, CYLINDERS, CONES

Sec. 50. The Polyhedron Defined 147
Sec. 51. Regular Polyhedra 147
Sec. 52. Eulers Theorem 149
Sec. 53. The Prism. 152
Sec. 54. A Cylindrical Surface. The Cylinder 156
Sec. 55. The Pyramid 159
Sec. 56. A Conical Surface. The Cone 160
Sec. 57. Homothety in бресе 163
Sec. 58. Properties of Parallel Sections of a Cone (Pyramid). Frustums of a Cone (Pyramid) 165
Sec. 59. Sections of Polyhedra 167
Sec. 60. Worked Problems 169

Problems to Chapter 7 174

CHAPTER 8. THE BALL

Sec. 61. A Sphere and a Ball Defined. A Sphere and a Ball Cut by a Plane 181
Sec. 62. A Tangent Plane. 182
Sec. 63. The Concept of a Spherical Triangle 183
Sec. 64. Worked Problems 485
Problems to Chapter 8. 189

CHAPTER 9. MEASURING VOLUMES

Sec. 65. General Properties of Volumes 191
Sec. 66. The Volume of a Rectangular Parallelepiped 192
Sec. 67. The Volume of a Right Cylindrical Solid 194
Sec. 68. The Volume of an Oblique Cylindrical Solid 195
Sec. 69. The General Formula for Computing the Volume of a Figure Using the Areas of Cross-Sections 196
Sec. 70. The Formulas for Computing the Volume of a Cone, a Ball and Its Parts. Simpson’s Formula 199
Sec. 71. Worked Problems 204

Problems to Chapter 9 209

CHAPTER 10. THE AREA OF SURFACE

Sec. 72. The Area of the Surface of a Polyhedron 215
Sec. 73. The Area of an Arbitrary Surface 218
Sec. 74. The Area of the Surface of a Right Circular Cylinder, a Circular Cone, and a Ball 219
Sec. 75. Worked Problems 223

Problems to Chapter 10 226

ANSWERS 232
INDEX 236

Posted in books, mathematics, mir books, mir publishers | Tagged areas, basis, cones, conic sections, cylinder, euler theorem, geometry, high school, mathematics, mir publishers, mirbooks, parallel lines, parallelism, polyhedra, projections, solid geometry, space vectors, sphere, transformations, triangles, volumes | Leave a comment

I Won’t Apologize – Sofia Prokofieva

Posted on October 19, 2021 by The Mitr

In this post, we will see the book I Won’t Apologize by Sofia Prokofieva.

About the book

The book tells a story about a boy named Vasya who after a fight with his mother runs away from his home. In the process he and has an adventure and finally realises his mistake.

The book was translated from Russian by Raissa Bobrova and the fantastic paintings are by G. A. W. Traugot was published in by Raduga in 1984.

All Credits to Guptaji.

You can get the book here and here.

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Posted in books, children's books, children's stories, raduga publishers, soviet | Tagged children's book, illustrated book, soviet, story book, vasya, winter | Leave a comment

Computational Mathematics – Danilina, Dubrovskaya, Kvasha, Smirnov

Posted on October 18, 2021 by The Mitr

In this post, we will see the book Computational Mathematics by N. I. Danilina; N. S. Dubrovskaya; O. P. Kvasha; G. L. Smirnov.

About the book

The rapid development of computer engineering in recent times has led to ail expansion of application of mathematics. Quantitative methods have been introduced into practically every sphere of human activity. The use of computers in the economy requires skilled specialists who have a command of the methods of computational mathematics.

Computational mathematics is one of the principal disciplines necessary for the preparation of specialists for various branches of economy. By studying it students acquire theoretical knowledge and practical skill to solve various applied problems with the aid of mathematical models and numerical methods that are realized on a computer.

This study aid assumes that the reader is aware of the elementary concepts of higher mathematics, i.e. continuity, the derivative and the integral. It covers three large divisions of mathematics: “Algebraic Methods” (Ch. 2-6), “Numerical Methods of Analysis” (Ch. 1, 7, 8) and “Numerical Methods of Solving Differential Equations” (Ch. 1), 10).
The theoretical material presented is illustrated by numerous examples. Each chapter is concluded by exercises for independent work.

The book was translated from Russian by Irene Aleksanova and was published in 1988 by Mir.

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You can get the book here.

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Preface 5

Introduction 11

Chapter 1 Elementary Theory of Errors 14

1.1. Exact and Approximate Numbers. Sources and Classification of Errors 14
1.2. Decimal Notation and Rounding Off Numbers 16
1.3. Absolute and Relative Errors 17
1.4. Valid Significant Digits 20
1.5. The Connection Between the Number of Valid Digits and the Error of the Number 22
1.6. The Errors of a Sum and a Difference 23
1.7. The Error of a Product. The Number of Valid Digits in a Product 27
1.8. The Error of a Quotient. The Number of Valid Digits of a Quotient 32
1.9. The Errors of a Power and a Root 35
1.10. The Rules of Calculating Digits 36
Exercises 38

Chapter 2 Matrix Algebra and Some Data from the Theory of Linear Vector Spaces 39

2.1. Matrices and Vectors. Principal Operations Involving Matrices and Vectors 39
2.2. Transpose of a Matrix 46
2.3. The Determinant of a Matrix. The Properties of the Determinant and the Rules of Its Calculation 48
2.4. The Inverse Matrix 57
2.5. Solving Matrix Equations 63
2.6. Triangular Matrices. Expansion of a Matrix in a Product of Two Triangular Matrices 66
2.7. Inversion of a Matrix by Expanding It in a Product of Two Triangular Matrices 72
2.8 Step Matrices and Operations Involving them 78
2.9. Inversion of a Matrix by Partitioning it into Blocks 82
2.10. The Absolute Value and the Norm of a Matrix 89
2.11. The Rank of a Matrix and the Methods of Its Calculation 91
2.12. The Concept of a Linear (Vector) Space. The Linear Dependence of Vectors 95
2.13. The Basis of Space 98
2.14. The Transformation of the Coordinates of a Vector upon a Change in the Basis 104
Exercises 105

Chapter 3. Solving Systems of Linear Equations 108

3.1. Systems of Linear Equations 108
3.2. The Kronecker-Capelli Theorem 109
3.3. Cramer’s Rule for n Linear Equations in Unknowns 111
3.4. Solving Arbitrary Systems of Linear Equations 114
3.5. Homogeneous Systems of Linear Equations 118
3.6. Basic Elimination Procedure 120
3.7. Solving Systems of Linear Equations by the Gauss Elimination Method 124
3.8. Calculating Determinants by the Gauss Elimination Method 136
3.9. The Gaussian Elimination for Inversion of a Matrix 138
3.10. Cholesky’s Method 142
3.11 The Iterative Method (the Method of Successive Approximations) 148
3.12. The Conditions for Convergence of an Iterative Process 153
3.13. Estimation of the Error of the Approximate Process of the Iterative Method 154
3.14. Seidel’s Method. The Conditions for convergence of Seidel’s Process 156
3.15. Estimation of the Errors of Seidel’s Process 159
3.16. Reducing a System of Linear Equations to a Form Convenient for Iterations 160
Exercises 162

Chapter 4. Calculating the Values of Elementary Functions 165

4.1. Calculating the Values of Algebraic Polynomials 165
4.2. Calculating the Values of Analytic Functions 170
4.3. The Iterative Method of Calculating the Value of a Function 176
Exercises 178

Chapter 5. Methods of Solving Nonlinear Equations 179

5.1. Algebraic aud Transcendental Equations 179
5.2. Separating Roots 184
5.3. Computing Hoots with a Specified Accuracy. Trial and Error Method 192
5.4. Method of Chords 197
5.5. Newton’s Method of Approximation 203
5.6. Tho Combination of the Method of Chords and Newton’s Method 207
5.7. The Iterative Method 214
5.8. General Properties of Algebraic Equations. Determining the Number of Real Roots of an Algebraic Equation 223
5.9. Finding the Domains of Existence of the Roots of an Algebraic Equation 228
5.10. Horner’s Method of Approximating Real Roots of an Algebraic Equation 231

Exercises 235

Chapter 6 The Eigenvalues and Eigenvectors of a Matrix 237

6.1. The Characteristic Polynomial 237
6.2. The Method of Direct Expansion 241
6.3. Krylov’s Method of Expansion of a Characteristic Determinant 245
6.4. Using Krylov’s Method for Calculation of Eigenvectors 253
6.5. The Leverrier-Faddeev Method 254
6.6. Using the Leverrier-Faddeev Method for Calculation of Eigenvectors 258
6.7. Danilevsky’s Method 260
6.8. Using Danilevsky’s Method for Calculation of Eigenvectors 274
6.9. Using Iterative Methods to Find tho First Eigenvalue of a Matrix 277
6.10. Determining the Successive Eigenvalues and the Corresponding Eigenvectors 279
Exercises 281

Chapter 7 Interpolation and Extrapolation 283

7.1. The Function and the Methods of Its Representation 283
7.2. Mathematical Tables 285
7.3. The Approximation Theory 290
7.4. Interpolation by Polynomials 294
7.5. The Error of Interpolation Processes 297
7.6. Lagrange’s Interpolating Polynomial 202
7.7. Finite Differences 308
7.8. Stirling and Bessel Interpolating Polynomials 318
7.9. Newton’s First and Second Interpolating Polynomials 324
7.10. Divided Differences 329
7.11. Newton’s Interpolating Polynomial for an Arbitrary Net of Nodes 334
7.12. Practical Interpolation in Tables 338
7.13. Aitken’s Iterated Interpolation 330
7.14. “Optimal-Interval” Interpolation 342
7.15. Interpolation with Multiple Nodes 345
7.16. Mathematical Apparatus of Trigonometric 347
7.17. Trigonometric Interpolation 357
7.18. Numerical Methods of Determining the Fourier Coefficients 362
7.19. Backward Interpolation 366
Exercises 371

Chapter 8. Numerical Differentiation and Integration

8.1. Statement of a Problem and the Basic Formulas for Numerical Differentiation
8.2. Peculiarities of Numerical Differentiation
8.3. Statement of a Problem of Numerical Integration
8.4. Basic Quadrature Formulas
8.5. Newton-Cotes Quadrature Formulas
8.6. Quadrature Formulas of the Highest Algebraic Degree of Accuracy
8.7. Compounded Quadrature Formulas
Exercises

Chapter 9 Approximate Solution of Ordinary Differential Equations 423

9.1. Differential Equations 423
9.2. The Method of Successive Approximations (Picard’s Method) 426
9.3. Integrating Differential Equations by Means of Power Series 430
9.4. Numerical Integration of Differential Equations. Euler’s Method 434
9.5. Modifications of Euler’s Method 430
9.6. The Runge-Kutta Method 444
9.7. Adams’ Extrapolation Method 452
9.8. Milne’s Method 459
9.9. The Notion of the Boundary Value Problem for Ordinary Differential Equations 465
9.10. The Method of Finite Differences for Second-Order Linear Differential Equations 467
Exercises 469

Chapter 10 Approximate Methods of Solution of Partial Differential Equations 471

10.1. Classification of the Second-Order Differential Equations 471
10.2. Classification of Boundary Value Problems 473
10.3. Statement of the Simplest Boundary-Value Problems 477
10.4. The Method of Finite Differences. The Principal Concepts 483
10.5. Difference Schemes for Solving the Equation of Heat Conduction 494
10.6. Difference Schemes for Solving the Equation of Oscillation of a String 498

Exercises 500
Answers to Exercises 502
Index 507

Posted in books, mathematics, mir books, mir publishers, science, technology | Tagged adam's extrapolation method, approximate methods, approximate solutions, boundary value problems, Characteristic Polynomial, Cholesky's Method, computational methods, Danilevsky's Method, difference scheme, Eigenvalues and Eigenvectors of a Matrix, elementary functions, euler's method, extrapolation, Gauss Elimination Method, Horner's Method, interpolation, iterative methods, Krylov's Method, Leverrier-Faddeev Method, linear vector spaces, matrix algebra, method of finite differences, Methods of Solving Nonlinear Equations, milne's method, Newton's Method of Approximation, Newton-Cotes Quadrature Formulas, Numerical Differentiation and Integration, numerical methods, ordinary diff, ordinary differential equations, partial differential equations, picard's method, power series, quadrature formula, runge-kutta method, solutions, systems of linear equations, Theory of Errors | 1 Comment

Grandpa’s Glasses (দাদুর চশমা) by Georgi Yurmin

Posted on October 17, 2021 by The Mitr

In this post, we will see the book Grandpa’s Glasses by Georgi Yurmin.

About the book

In this book grandpa to a curious child explains different optical instruments and their uses. We come to know about lenses, spectacles, magnifying glasses, telescopes, microscopes, binoculars and periscopes.

The book was translated from Russian by Fainna Solasko and illustrated by Irina Kiselevskaya. The book was published in by Raduga.

All credits to Guptaji.

You can get the book here and here.

There is a Bengali version here and here.

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How Grandpa Lost His Glasses 5

Two Curved Shafts 7

What’s the good of a Long Nose? 9

Why-Why-Why? 11

I’m not scared of Mr. Fire-Eater 17

Which Glasses are the best? 19

Posted in books, children's books, children's stories | Tagged bengali, binocular, children's book, children's literature, lenses, microscope, Optical Instruments, optics, periscope, popular science, spectacles, telescopes | Leave a comment

Automation of Electrical Power Systems – Barzam

Posted on October 16, 2021 by The Mitr

In this post, we will see the book Automation In Electrical Power Systems by A. Barzam.

About the book

This is the third Russian edition of “Automation in Electrical Power Systems” which covers design and operation of automatic control devices intended to prevent and clear faults in electrical power systems and restore power to the loads in the event of breakdown thus assuring continuity of the supply.

The reliable and unfailing operation of such devices has been ensured through the research and development effort put into automatic power control systems. The book discusses automatic control in conjunction with protective relaying, since the required reliability and economy of power system operation can be achieved through the combined action of both groups of equipment, each cate ring for specific aspects in functioning of loads and generating sources.

The wide use of automatic control systems adds to the reliability, stability and economy of power supply systems and takes some burden from attending personnel.

The book is designed as a study guide for students of power engineering secondary schools. It may also interest engineers concerned with the operation, installation and design of protective relaying and automatic devices used in electric power stations and networks.

The book was translated from Russian by P. I. Zabolotny and was published in 1977 by Mir.

Credits to the original uploader.

You can get the book here.

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Preface 9

Introduction 11

I-1. Purpose of Automatic Power Control Systems 11
I-2. Elements of Automatic Control Systems 13
I-3. Automatic Control and Controllers 16
I-4. Relays and Relaying Devices 22
I-5. Elements of Logic Operations 24
I-6. Connection Diagrams 31
I-7. Conclusions 32
I-8. Review Questions 33

Chapter 1. Automatic Control of Synchronous Generator Excitation 35

1-1. Purpose of Automatic Excitation Control (AEC) Devices 35
1-2. Automatic Excitation Forcing of a Generator 38
1-3. Excitation Compounding with Cumulative Connection of Electromagnetic
Voltage Corrector 43
1-4. Excitation Controllers of Generators, Series TVV, with a High-Frequency Excitation System 49
1-5. Overaction Excitation Controllers 51
1-6. Conclusions 56
1-7. Review Questions 57

Chapter 2. Automatic Voltage Regulation 60

2-1. General 60
2-2. Use of AEC Devices 60
2-3. Group Control of Generator Excitation 65
2-4. na Devices for Changing the Transformation Ratio of Power Transformers 69
2-5. Devices for Automatic Capacity ‘Control of Capacitor Banks 75
2-6. Voltage Regulation by Booster Transformers 78
2-7. Voltage Regulation by Changing Excitation of Synchronous Capacitor 78
2-8. Voltage Ngulaan; By: Controlled Reactors 80
2-9. Conclusions 81
2-10. Review Questions 82

Chapter 3. Excitation Systems and Automatic Field pihage Devices of Synchronous Machines 83

3-1. General 83
3-2. Exciters Using Gas-Discharge Tubes and Thyristors 86
3-3. Brushless Excitation System 91
3-4. Excitation Systems of Large Turbogenerators 92
3-5. Field Discharge by Deion Grid Automatic Devices and by changing the Field Coil Supply to Inverter 94
3-6. Conclusions 99
3-7. Review Questions 100

Chapter 4. Automatic Controls for Maintaining Stability in Parallel Operation and Elimination of Asynchronous Operation 102

4-1. General 102
4-2. Principal Relations Determining Operation of Automatic Controls 103
4-3. Automatic Controls for Improvement of Steady-State Stability 109
4-4. Automatic Controls for Improvement of Transient Stability 124
4-5. Automatic Devices for Sectionalizing Power Systems to Prevent or Eliminate Asynchronous Operation 129
4-6. Separation of Small Thermal Power Stations from Large Hydroelectric Stations when Speed of Hydroelectric Generators Increases 143
4-7. Preventing Misoperation of Protective Relaying 144
4-8. Conclusions 158
4-9. Review Questions 159

Chapter 5. Automatic Frequency Control 161

5-1. Purpose and Specific Features of Automatic PENS Control (AFC) 161
5-2. Modern Principles of AFC 165
5-3. Short-Time Drops of Frequency 169
5-4. Choice of Parameters of FARC Devices and Work of Operators 175
5-5. AFC and FARC Circuits 176
5-6. Induction Frequency Relays 180
5-7. Frequency Relays, Type P4U-I, EAU Onne Semiconductor Blemenie 184
5-8 Conclusions 187
5-9. Review Questions 188

Chapter 6. Automatic Control of Frequency; Real Power and Power Flows in Power Systems 189

6-1. General 189
6-2. Frequency and Power Regulators 193
6-3. Devices to Control Power Output 195
6-4. Power Group Control at Thermal Stations 199
6-5. Power Group Control at Hydroelectric Stations 200
6-6. Frequency and Power Control in Integrated Power Systems 205
6-7. Magnetic Power Transducers 212
6-8. Conclusions 213
6-9. Review Questions 215

Chapter 7. Rapid Paralleling of Synchronous Generators and Parts of Power System 217

7-1. General 217
7-2. Precise Synchronization by Means of an ACT-4 Autosynchronizer 218
7-3. Self-Synchronization of Generators 227
7-4. Automatic Connection of Generators by Self-Synchronization 231
7-5. Speed Control Methods 236
7-6. Asynchronous Connection of Generators and Parts of Power System 238
7-7. Connection of Synchronous Motors, Preventing Their ace Out of a and
Resynchronization 241
7-8. Conclusions 247
7-9. Review Questions 248

Chapter 8. Three-Phase Automatic Reclosure 254

8-1. General 251
8-2. Single Lines ‘with Supply from One End 258
8-3. Single Tie Lines Between Power Stations and Substations with Svachronous Loads 268
8-4. Tie Lines and Parallel Links 287
8-5. TPARC Devices on Air Circuit Breakers 289
8-6. Conclusions 293
8-7. Review Questions 295

Chapter 9. One Phase Automatic Reclosure of Power Transmission Lines 297

9-1. Earth Fault and Tripping of One Phase 297
9-2. Types of Discriminating Elements of PARC Devices 306
9-3. PARC Circuit 312
9-4. Use of TPARC Device of Double-Shot Type and Pole-After-Pole Isolators in Place of a PARC Device on Lines 315
9-9. Conclusions 316
9-6. Review Questions 317

Chapter 10. Three Phase Automatic Reclosure of Transformers and Busbars 319

10-1. General 319
10-2. Automatic Testing of Busbars for Insulation 321
10-3. Power Supply to Consumers After Tripping of Busbars and Automatic
Reestablishing of Substation Connections 322
10-4. Automatic Reestablishing of Power Station Connections 324
10-5. Three-Phase ARC of Transformers 325
10-6. Conclusions 327
10-7. Review Questions 327

Chapter 11. Automatic Transfer to Reserve Supply and Equipment 328

11-1. General 328
11-2. ATS Device Circuits 331
11-3. ATS Devices Used by Substations Supplying Synchronous Loads 339
11-4. ATS Devices with Standardization Control Stations 341
41-5. Self-Starting of an Asynchronous Load 343
41-6. Conclusions 356
11-7. Review Questions 307

Chapter 12. Operation of ARC and ATS Devices in Conjunction with Protective Relaying 358

12-1. Acceleration of Protection Action Before ARC 308
12-2. Acceleration of Protection Action After ARC, ATS, and Remote Connection 359
12-3. High-Speed Selective Disconnection 360
12-4. Substations Without Circuit Breakers on the High-Tension Side 864
12-5. Simplifying Protective Relaying of Complex System Lines 367
12-6. Simplifying Primary Connection Circuits and Protective Relaying 369
12-7. Step-Down Transformers at Remote-Controlled Substations 373
12-8. Automatic Discriminating Redundancy 374
12-9. Conclusions 376
12-10. Review Questions 377

Chapter 13. Automatic Control Eliminating Overvoltages Across Equipment 378

13-1. General 378
13-2. Overvoltage Automatic Protection Controls
13-3. Increasing the Reset-to-Pickup Ratio of Voltage Relay
13-4. Conclusions

Chapter 14. Automatic Recording of Electrical Variables in Disturbances 392

14-1. General 392
14-2. Automatic Starting Devices for Oscillographs 396
14-3. Devices for Recording Electrical Variables with Automatic Acceleration of Recording Speeds During Disturbances 400
14-4. Automatic Oscillographs 403
14-5. Locating the Fault on Power Transmission Line from Fixing Instruments 406
14-6. Fixing Instruments 411
44-7. Conclusions 418
44-8. Review Questions 419

References 420
Index 428

Posted in books, engineering, mir books, mir publishers, physics, soviet, technology | Tagged Automatic Control, Automatic Frequency Control, automatic voltage regulation, electrical engineering, electrical systems, Electrical Variables, Excitation Systems, power systems, Power Transmission Lines, protective relaying, Synchronous Generator Excitation, Synchronous Generators, three phase, variables | 1 Comment

The Lion And The Dog – Lev Tolstoy

Posted on October 15, 2021 by The Mitr

In this post, we will see the book The Lion And The Dog by Lev Tolstoy.

About the book

This short book has two stories. The first story is of an unlikely friendship between a lion and a dog. The second story is of a mother eagle feeding her young eaglets.

The book was translated from Russian by and was published in 1975 by Progress. The drawings are by Victor Duvidov.

All credits to Guptaji.

You can get the book here. (This is a cleaned version of this scan by Guptaji)

Write to us: mirtitles@gmail.com

Fork us at GitLab: https://gitlab.com/mirtitles/

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Posted in books, children's books, children's stories, progress publishers | Tagged children's literature, children's stories, dog, eagle, friendship, illustrated book, lion, soviet, tolstoy | 1 Comment

Some new acquisitions

Posted on October 14, 2021 by The Mitr

and also few from my old stack.

Several books below acquired from Abids used book market at Hyderabad.

Thanks to ArvindJ for taking me there.

Thanks to @desperadomar for arranging books below. Lot of literature and titles in Hindi too.

Posted in books, meta, used books | Tagged mir books, raduga, used books | 7 Comments

Foundry Practice – Titov, Stepanov

Posted on October 13, 2021 by The Mitr

In this post, we will see the book Foundry Practice by N. D. Titov and Yu. A. Stepanov.

About the book

The book is based on the lectures read to the students of machine- building secondary schools and also on the foundry practice course included in the curriculum of the Bauman Higher Technical School of Moscow.
The book opens with a detailed description of sand molding technology, melting, pouring, and fettling of castings from gray iron which is one of the most widely used casting alloys. Subsequent chapters treat the methods of fabrication of castings from malleable iron, steels, and alloys of copper, aluminum, and magnesium. One part of the book places a particular emphasis on the theory of casting. The last part which includes several chapters contains basic information on special casting processes such as permanent mold casting, die casting, investment casting, and shell casting. The authors have paid special attention to the sequential presentation of various aspects of founding in a clear and readable language.
Each chapter first describes the essence of production processes, the influence of operating conditions on the quality of castings, and then presents the rational fields of application of the production methods. In the authors’ opinion, such a presentation of the material helps the reader to acquire more readily the basic knowledge of foundry practice.

The book was translated from Russian by P. S. Ivanov and was published in 1981 by Mir.

Credits to the original uploader.

You can get the book here (~ 14 MB).

The link above is an optimised version of the original file of ~ 310 MB

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Preface 9

Part I. Molding Technology. 11

Chapter 1. Casting Mold 11

Chapter 2. Basics of Pattern Design and Making 18

2.1. General 18
2.2. Wood Patterns 18
2.3. Metal Patterns 35
2.4. Plastic Patterns 44

Chapter 3. Molding Materials 49

3.1. General 49
3.2. Sand Types 51
3.3. Clay. Type Binders 55
3.4. Other Binders 57
3.5. Auxiliary Molding Materials 61
3.6. Molding and Core Sands 63
3.7. Washes, Pastes, Powders, and Other Dressings 80
3.8. Preparation of Molding and Core Sands 84
3.9. Sand Control 92

Chapter 4. Production of Molds 102

4.1. General 102
4.2. Hand Molding 107
4.3. Machine Molding 124
4.4. Organization of In-Line Production, Integral Mechanization and
Automatization in the Molding Shop 140

Chapter 5. Gating Systems 146

5.1. Elements of the Gating System 146
5.2. Gating Methods and Types of Gating Systems 150
5.3. Calculation of Gates for Gray Iron Castings 153

Chapter 6. Coremaking 163

6.1. General 163
6.2. Core Design 163
6.3. Hand Coremaking 167
6.4. Machine Coremaking 171
6.5. Finishing, Inspection, and Storing of Cores 177
6.6. Mold and Core Drying 180

Chapter 7. Mold Assembly and Fastening 186

7.1. Mold Assembly 186
7.2. Mold Fastening and Weighting 187

Chapter 8. Design of Castings, Molds, and Cores 190

8.1. Design of Castings 190
8.2. Design of Molds and Cores 194

Chapter 9. Cost Effectiveness of Metal Casting 213

9.1. Technical-and-Economic Indexes 213
9.2. Economic Efficiency of a Casting Process 214
9.3. Ways of Increasing Economic Efficiency of Metal Casting 218

Part II. Basic Theory of Casting.

Chapter 1. Interaction of the Mold with Molten Metal 219

1.1. Gases in Castings 219
1.2. Effect of Molten Metal on the Mold 224
1.3. Crystallization of Alloys in the Mold 227
1.4. Internal Casting 230

Chapter 2. Casting Properties of Metals and Alloys 235

2.1. Fluidity 235
2.2. Shrinkage 237
2.3. Segregation 243

Part III. Production of Gray Iron Castings.

Chapter 1. Gray Cast Iron 246

1.1. General 246
1.2. Effect of the Chemical Composition on the Structure and Properties of Iron 247
1.3. Classification of Irons 252
1.4. Mechanical Properties of Cast 254
1.5. Inoculation of Gray Iron 256
1.6. High-Strength Irons 256
1.7. Alloy Cast Irons 259

Chapter 2. Charge Materials. Charge Calculation 262

2.1. Metal Charge 262
2.2. Fuels 267
2.3. Fluxes 269
2.4. Charge Calculation 271

Chapter 3. Melting Cast Iron in the Cupola 279

3.1. General 279
3.2. Metallurgical Principles of Melting Iron in the Cupola 284
3.3. Stepping up the Process of Cupola Melting 289
3.4. Disturbances іп the Cupola Run 291
3.5. Melting Process Control 292

Chapter 4. Melting Iron in Reverberatory and Electric Furnaces.297

4.1. Melting in Reverberatory Furnaces 297
4.2. Melting in Electric Arc Furnaces 298
4.3. Melting in Coreless Induction Furnaces 302
4.4. Melting in Core Induction Furnaces 305

Chapter 5. Running, Shakeout, Fettling and Acceptance of Gray Iron Castings 308

5.1. Pouring into Molds 308
5.2. Cooling and Shakeout of Castings 312
5.3. Fettling of Castings 313
5.4. Chipping and Grinding of Castings321
5.5. Heat Treatment of Iron Castings 322

Chapter 6. Casting Defects 324

6.1. General 324
6.2. Types and Causes of Defects. Preventive Measures 324
6.3. Inspection 329
6.4. Salvaging Operations 331
6.5. Product Quality Control Management 333

Part IV. Production of Malleable Castings 336

Chapter 1. Molding Practice and Melting 336

1.1. General 336
1.2. Some Features of Molding Practice 338
1.3. Melting White Cast Iron 340
1.4. Fettling of Castings 345

Chapter 2. Annealing of Castings 347

2.1. Malleable Annealing 347
2.2. Short-Cycle Malleable Annealing 351

Part V. Production of Steel Castings 353

Chapter 1. Steels for Shaped Castings 353

1.1. General 353
1.2. Carbon Steels 354
1.3. Alloy Cast Steels 355

Chapter 2. Design of Steel Castings and Molding Practice 357

2.1. Design of Steel Castings and Molds 357
2.2. Construction and Calculation of Gating Systems and Risers 359

Chapter 3. Melting and Casting of Steels 363

3.1. Melting in Open-Hearth Furnaces363
3.2. Melting in Basic and Acid Electric Furnaces 366
3.3. Pouring, Cleaning, and Heat Treatment of Castings 370

Part VI. Production of Nonferrous Castings 373

Chapter 1. Production of Copper-Alloy Castings 374

1.1. Composition and Properties of Copper Alloys 374
1.2. Gating and Risering… css 376
1.3. Melting Copper Alloys 378

Chapter 2. Production of Aluminum Castings 383

2.1. Composition and Properties of Aluminum Alloys 383
2.2. Molds, Gates, and Risers 386
2.3. Melting Aluminum Alloys and Pouring Molds 387

Chapter 3. Production of Magnesium Castings 393

3.1. Composition and Properties of Magnesium Alloys 393
3.2. Molds and Gates 394
3.3. Melting Magnesium Alloys 395

Part VII. Special Casting Processes 398

Chapter 1. Permanent-Mold Casting 398

4:1. General 398
4.2. Permanent Molding 399
1.3. Casting Various Alloys 404
1.4. Permanent Molding Machines 406

Chapter 2. Centrifugal Casting 408

2.1. General 408
2.2. Molds and Machines 411

Chapter 3. Die Casting 414

3.1. General 414
3.2. Pressure Casting Dies 418
3.3. Die Casting Machines 420
3.4. Gating Systems and Operating Conditions 422
3.5. Low-Pressure Die Casting 425

Chapter 4. Investment 427

4:4. General 427
4.2. Production of 429
4.3. Production of the Investment Mold 433
4.4. Investment Casting Process 436
4.5. Melting and Pouring Metal into Molds, Shakeout and Fettling of Castings 439

Chapter 5. Shell 440

5.1. General 440
5.2. Production of Shell Molds and Cores 443
5.3. Assembling and Pouring of Shell Molds. Shakeout of Castings 444

Chapter 6. Other Special Casting 446

6.1. Continuous 446
6.2. Chill Casting 448
6.3. Casting by Squeezing 451
6.4. Liquid 452

Index 454

Posted in books, engineering, metals, mir books, mir publishers, soviet, technology | Tagged alloys, annealing, assembly, casting, casting defects, casting mold, centrifugal casting, coremaking, design, die csting, engineering, founding, furnaces, gating systems, gray iron, malleable castings, materials science, metallurgy, metals, molding materials, molding technology, molds, nonferrous castings, permanent mold casting, production, reverberatory furnaces, shells, soviet, steel castings | 2 Comments

Basic Concepts of Quantum Mechanics – Tarasov (LaTeX Edition)

Posted on October 12, 2021 by The Mitr

This gallery contains 13 photos.

In this post, we will see the LaTeX version of the book Basic Concepts of Quantum Mechanics by Lev Tarasov. We had earlier seen a scanned version of the book. About the book This book gives a detailed and systematic … Continue reading →

More Galleries | Tagged Causality in Quantum Theory, commutation relations, complementarity principle, electrons, elementary particles, energy quantization, experiments, hamiltonian matrix, history, interpretation, knowledge, linear operators, measurement in quantum mechanics, models, momentum representation, paradoxes, physical systems, physics, quantum mechanics, quantum transitions, rejection of classical physics, schroedinger equation, superposition of states, theory, Transition Probabilities, Uncertainty Relation, vector analogy, waev function | 5 Comments

Yushka | ইউশকা | యుష్కా – Kuprin

Posted on October 11, 2021 by The Mitr

In this post, we will see the book Yushka by Alexander Kuprin.

About the book

The book is about an intelligent and magnificent cat named Yushka. Her habits, behavior and experience of living with her are described.

The book was translated from Russian to English by Fainna Giagolava and was published in 1977 by Progress Publishers. We have a Telugu and a Bengali version too. The images below are the names of the translators, please do help with the names if you read these scripts.

All credits to Guptaji.

You can get the book in

English version here and here (1971).

Telugu version here and here (1981).

Bengali version here and here (1981).

Continue reading →

Posted in books, children's books, children's stories, picture books, progress publishers, soviet | Tagged bengali, cats, children's book, children's literature, children's stories, drawings, illustrated book, pets, soviet, telugu | Leave a comment

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Part I. Molding Technology. 11

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Part V. Production of Steel Castings 353

Part VII. Special Casting Processes 398

Basic Concepts of Quantum Mechanics – Tarasov (LaTeX Edition)

Yushka | ইউশকা | యుష్కా – Kuprin

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