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E-grāmata: Reeds Vol 6: Basic Electrotechnology for Marine Engineers

(Britannia Royal Naval College, UK)
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A fully revised and updated edition of this classic textbook covering the principal topics in electrotechnology for marine engineers.

A fully revised and updated edition of this classic textbook covering the principal topics in electrotechnology for marine engineers.

This book provides comprehensive coverage of the basic theoretical work required by Marine Engineering Officers and Electrotechnical Officers (ETOs), putting into place key fundamental building blocks and topics in electrotechnology before progressing to more complex topics and electromagnetic systems.

Volume 6 covers essential basic electrotechnology principles for the 21st century, including the fundamentals of electron theory, AC and DC current, circuits, electromagnetism and electrochemistry. It provides a firm foundation for complementary Volume 7 in the Marine Engineering Series to discuss emergent technology such as image intensifers, the transistor, increased maritime use of LEDs, and references to modern ship systems such as GPS, ECDIS, Radar and AIS.

This new edition has been thoroughly updated in line with guidelines, best practice and the many technological developments that have taken place over the past 5 years since the previous edition published, as well as improvements and updates to the technical diagrams.

Papildus informācija

Fully revised and updated edition of this classic textbook covering the principal topics in electrotechnology for marine engineers.
Preface xi
The S.I. System xiii
1 Fundamental Electrical Theory Terms And Laws 1(24)
Electron Theory
1(6)
The nature of electricity
1(1)
The structure of the atom
2(2)
Current as electron movement
4(1)
Ionisation
5(1)
The electric circuit
5(2)
Circuit Laws
7(11)
Ohm's law
7(1)
Series and parallel circuits
8(1)
Kirchhoff's laws
9(3)
Internal resistance of a supply source
12(1)
Electromotive force (e.m.f.) and terminal RD. or voltage
12(6)
Ammeters and Voltmeters
18(7)
Range of extension of ammeters and voltmeters
19(3)
Instrument sensitivity
22(3)
2 The Electric Circuit: Units 25(21)
The SI System
26(8)
Mechanical units
27(2)
Electrical units
29(5)
Examples Relating Mechanical and Electrical Energy
34(4)
Efficiency
35(3)
Grouping of Cells
38(8)
Series connection
38(2)
Parallel connection
40(1)
Series-parallel connection
41(2)
Maximum power transfer condition for a loaded circuit
43(3)
3 Conductors, Insulators And Semiconductors 46(29)
Resistance of a Conductor
46(8)
Variation of conductor resistance with dimensions and material
46(4)
Variation of conductor resistance with temperature
50(4)
Resistance of an Insulator
54(4)
Variation of insulation resistance with dimensions and material
54(2)
Variation of insulation resistance with temperature
56(2)
Resistance of a Semiconductor
58(1)
Variation of semiconductor resistance with temperature
58(1)
Heat and Electrical Energy
59(16)
Relation between mechanical and heat energy
59(2)
Relation between electrical and heat energy
61(4)
Atomic theory of conduction
65(1)
Energy levels
66(1)
Energy bands
66(1)
Crystal lattice
67(2)
Conductivity
69(1)
Metallic conduction
70(1)
Liquid conduction
71(1)
Gaseous conduction
71(1)
Cold electron emission
72(1)
The cold-cathode discharge lamp
73(2)
4 Electrochemistry 75(35)
Electrolytic Dissociation
76(1)
Electrolysis
76(3)
Electrolytic Cells
79(10)
The water voltameter (sulphuric acid solution)
79(2)
The copper voltameter (copper sulphate solution)
81(1)
Quantitative laws of electrolysis (Faraday's laws)
82(1)
Electrochemical equivalent (E.C.E.)
82(1)
Atomic weight, valency, chemical equivalent weight
83(3)
Back e.m.f. of electrolysis
86(3)
Primary and Secondary Cells
89(4)
The simple voltaic cell
90(3)
Batteries
93(11)
The primary cell
94(1)
The secondary cell (or accumulator)
95(9)
The Meaning of pH
104(1)
Electrochemical Corrosion
105(5)
5 Magnetism-Electromagnetism 110(22)
Magnets
110(6)
Natural magnets
110(1)
Artificial magnets
111(1)
The magnetic field
112(3)
Molecular theory of magnetism
115(1)
Electromagnetism
116(4)
Field due to long straight current-carrying conductor
117(1)
Field due to a current-carrying conductor bent to form a single loop
118(1)
Field due to a current-carrying conductor wound as a solenoid
118(2)
Introduction of an Iron Core
120(2)
Force on a current-carrying conductor in a magnetic field
121(1)
The ampere
122(1)
Magnitude of force (on a current-carrying conductor in a magnetic field)
122(2)
Unit of flux density
123(1)
Unit of flux
123(1)
The Magnetic Circuit
124(8)
Magnetising force, magnetic field strength or magnetic field intensity
124(1)
Magnetomotive force or m.m.f.
125(2)
Permeability
127(1)
Permeability of free space (µ0)
127(5)
6 Electromagnetic Circuits 132(29)
Magnetising Force
132(4)
Magnetising force due to a long, straight current-carrying conductor
134(1)
Magnetising force inside a solenoid
134(1)
Magnetising force inside a toroid
135(1)
Ferromagnetism
136(1)
Relative permeability (µr)
136(1)
The B-H or Magnetisation Curve
137(4)
Reluctance (symbol S)
138(3)
The Composite Magnetic Ring
141(9)
The series arrangement
141(1)
The parallel arrangement
142(8)
Iron Losses
150(4)
The hysteresis loop
151(3)
Pull of an Electromagnet
154(7)
7 Electromagnetic Induction 161(29)
Laws of Electromagnetic Induction
163(1)
Faraday's law
163(1)
Lenz's law
163(1)
Static Induction
163(10)
Self-inductance
164(2)
E.m.f. due to static induction
166(2)
Mutual inductance
168(2)
Coupling factor
170(1)
Inductance of 2 coils in series
171(2)
Magnetic Induction
173(1)
Dynamic Induction
174(6)
E.m.f. due to dynamic induction
176(2)
Direction of induced e.m.f. (hand rules)
178(2)
The Simple Magneto-Dynamo
180(10)
The simple D.C. generator
182(8)
8 Electrostatics And Capacitance 190(23)
Electric Field
190(1)
Electrostatics
191(8)
Potential difference (P.D.)
193(1)
Electrostatic charging
193(1)
Distribution of charge
194(2)
Electrostatic fields of force
196(1)
Electrostatic flux
197(1)
Electric potential
198(1)
Capacitance
199(14)
The capacitor
199(1)
Capacitor systems
200(2)
Capacitor current
202(1)
Energy stored in an electric field or dielectric
203(1)
Relative permittivity
204(1)
Absolute permittivity
205(1)
Permittivity of free space
205(1)
Capacitance of a parallel-plate capacitor
206(2)
Transient effects in D.C. circuits
208(1)
Capacitor in a D.C. circuit
208(5)
9 Basic Alternating Current (A.C.) Theory 213(21)
The A.C. Waveform
213(4)
Representation of Sinusoidal Alternating Quantities
217(3)
Trigonometrical representation
217(1)
Phasor representation
218(2)
Addition and Subtraction of Alternating Quantities
220(5)
Root Mean Square and Average Values
225(9)
R.m.s. or effective value
225(4)
Average value
229(2)
Form factor
231(1)
Peak factor
231(3)
10 The Series A.C. Circuit 234(32)
Impedance
234(3)
Inductance
237(11)
Inductive reactance
237(11)
Capacitance
248(6)
Capacitive reactance
249(5)
The Series Circuit
254(12)
Inductive impedances in series
255(1)
Inductive and capacitive impedances in series
256(1)
The general series circuit
257(9)
11 A.C. Parallel Circuits And Systems 266(32)
A.C. Circuits
266(8)
Power in the A.C. circuit
266(1)
Active and reactive components
267(2)
The parallel circuit
269(1)
Inductive impedances in parallel
269(2)
Inductive and capacitive impedances in parallel
271(2)
Parallel resonance
273(1)
Power-Factor Improvement
274(11)
Advantages of power-factor improvement
276(3)
kW, kVA and kVAr
279(4)
Power-factor improvement (kVA method)
283(2)
Polyphase Working
285(13)
Three-phase systems
285(1)
Star or Y connection
286(2)
Use of the neutral
288(1)
Balanced load
289(1)
Unbalanced load
289(2)
Delta A or mesh connection
291(1)
Three-phase power
292(1)
Three-phase kVA, kW and kVAr
293(5)
12 The D.C. Generator 298(30)
D.C. Machine Construction
298(5)
Field system
298(1)
The armature
299(4)
D.C. Armature Winding Arrangements
303(2)
The D.C. Generator
305(3)
The e.m.f. equation
306(2)
Characteristics
308(1)
Associated Magnetic Circuit Effects
308(3)
The no-load characteristic
309(2)
Types of D.C. Generator
311(17)
The permanent-magnet type of generator
311(1)
The separately excited type of generator
312(1)
The shunt-connected generator
313(6)
The series-connected generator
319(2)
The compound-connected generator
321(7)
13 The D.C. Motor 328(28)
Direction of Force
328(2)
Magnitude of Force
330(4)
Back e.m.f. of a motor
330(1)
Voltage equation
330(1)
Current equation
331(1)
Speed equation
331(1)
Speed controlling factors
332(2)
Types of D.C. Motor
334(1)
The shunt motor
334(1)
The series motor
334(1)
The compound motor
335(1)
Equations
335(3)
The power equation
335(2)
The torque equation
337(1)
Torque controlling factors
337(1)
Motor Characteristics
338(9)
The shunt motor
338(2)
The series motor
340(2)
The compound motor
342(5)
Motor Starters
347(1)
Speed Control
347(9)
Estimation of D.C. machine efficiency
351(5)
Solutions To Practice Examples 356(80)
Selection Of Typical Second Class Examination Questions 436(6)
Solutions To Typical Second Class Examination Questions 442(20)
Selection Of Typical First Class Examination Questions 462(7)
Solutions To Typical First Class Examination Questions 469(38)
Index 507
Christopher Lavers is a lecturer in Marine Engineering, and has taught Maritime and Remote Sensing topics at Britannia Royal Naval College since 1993. He is Subject Matter Expert (Radar and Telecommunications) at Britannia Royal Naval College, Dartmouth, UK.