Electrical Engineering Practice: a Practical Treatise for Civil, Mechanical, and Electrical Engineers Especially Those in India and the Tropics. With Many Tables and Illustrations

John Willoughby Meares

Thacker, Spink & Company, 1916 - Electric engineering - 595 pages

Contents

• Conductors and insulators 6 Ohms megohms: 5
• Definition 15 British standard pressures 16 Loss: 13
• Amperes 18 Milliamperes 19 Currents in wires: 17
• Electrical Measurements: 24
• EXPLANATION: 32
• series of metals 43 Standard cells: 44
• Alternating current singlephase 52 Cycles: 50
• Mains 66 Transmission line 67 Distributing: 57
• Series connections 71 Conductors and glow lamps: 65
• SYSTEMS OF SUPPLY: 78
• Continuous current 2wire system 91 Continuous: 86
• INSTALLATIONS IN BUILDINGS: 95
• Arc Lamps: 104
• Illumination in candlefeet under various con: 110
• General considerations 148 Heating of air in theory: 140
• General considerations 164 Hot plates 165 Other: 148
• Copper conductors 171 I E E rules regarding: 158
• Loopingin 183 Junctionboxes 184 I E: 165
• Twopin plugs and sockets 192 Interchangeability: 174
• CONTROL AND WIRING: 185
• Switches all on one pole 199 Single way switching: 198
• General arrangement I E E rules 222 Subcircuit: 201
• Summary of systems 230 General specification 202 to: 208
• Light and heavy conduit 235 Insulated conduit: 218
• SYSTEMS OF INSTALLING: 219
• 22: 220
• Limitations of concentric wiring 256 I E E rules: 229
• Cost of lighting fittings 267 Cost of fans: 241
• Advantages of electric driving 271 Power to drive: 247
• Cost of wiring for lights 260 Cost of wiring: 259
• Types and construction 290 Speed and speed: 262
• PLANT FOR PRIVATE SUPPLY: 267
• Construction of generators 300 Shunt series: 288
• Secondary batteries 309A Care of accumulators: 309
• Licensees and sale of energy 215 Analysis of cost: 314
• Approximate cost of parts composing power: 328
• Central station plant approximate cost 326 Steam: 334
• River and canal falls 339 General design of: 345
• WATERPOWER CONTINUED DEVELOPMENT: 348
• Pelton wheels and nozzles 359 Speed of wheels: 366
• Disposal of power supplied to a car 368 Power: 375
• Maximum and average power demand for traction: 382
• to: 406
• Diversity of uses and conditions 393 Rules regulat: 412
• to: 421
• TRANSMISSION OF POWER: 426
• Capacity and capacity reactance 411 Capacity: 441
• Harddrawn copper wire explanation of table 71 443 to: 446
• SPECIFICATIONS DEPRECIATION: 481
• TESTING: 502
• Testing wiringcontinuity 449A Ohmeters 450: 509
• SUPPLEMENTARY: 523
• Lightning conductors 464 Telephones 465 Rec: 529
• APPENDIX: 535
• INDEX: 559

Popular passages

Page 1 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.‎

Page 544 - Contractor, to make good the failure, neglect, or contravention complained of, and should the Contractor fail to comply with the notice within seven days from the date of service thereof in the case of a failure, neglect, or contravention capable of being made good within that time, or otherwise within such time as may be reasonably necessary for making it good, then and in such case the Purchaser shall be at liberty to employ other workmen, and forthwith perform such Work as the Contractor may have...‎

Page 19 - Suppose a man swimming in the wire with the current, and that he turns so as to face the needle, then the North-seeking pole of the needle will be deflected towards his left hand.‎

Page 174 - Where the fixed part of a connector is attached to a floor it must be so arranged that no dust or water can accumulate, that all contacts are well below the floor-level, and that any possibility of danger from contact of live metal with carpets is avoided. Provision should be made to facilitate inspection.‎

Page 13 - and the like. Such ideas are survivals from the days before a scientific system of units had been evolved and co-ordinated in Ohm's Law (§ 17). From what has been written above it will be seen that the strength of current in a circuit, in amperes, depends on the other two factors of resistance and pressure. By Ohm's Law, if the standard pressure of a supply is (say) 220...‎

Page 34 - Rules embody the requirements and precautions which The Institution of Electrical Engineers has framed to secure satisfactory results with a supply of electrical energy at low pressures, not exceeding 250 volts...‎

Page 230 - Mines are set out on pages 259 to 272. 2. Notice of the introduction of wiring should in all cases be given to the Fire Offices insuring the risk, and their suggestions respecting any details not covered by these rules or any deviations arising from special conditions should be adopted.‎

Page 558 - Purchaser his legal 10 personal representatives successors or assigns by or from the Contractor by reason or in consequence of the default of the Contractor in the performance or observance of his said covenant but so nevertheless that the total amount to be demanded or recovered by the Purchaser his legal personal representatives successors or assigns of or from us as Sureties shall not exceed fifteen per cent of the Contract Price.‎

Page 2 - Verified 1894" when on reversing the current in the fixed coils the change in the forces acting upon the suspended coil in its sighted position is exactly balanced by the force exerted by gravity in Westminster upon the...‎

Page 184 - They must be incapable of forming a permanent arc when breaking circuit, and they, must be tested with pressures and currents 50 per cent, in excess of those which will be used on the circuits for which they are intended. Bases.‎

Bibliographic information

• Title: Electrical Engineering Practice: a Practical Treatise for Civil, Mechanical, and Electrical Engineers Especially Those in India and the Tropics. With Many Tables and Illustrations
• Author: John Willoughby Meares
• Edition: 2
• Publisher: Thacker, Spink & Company, 1916
• Original from: the University of California
• Digitized: Oct 23, 2007
• Length: 595 pages