Electrical Engineering Practice: A Practical Treatise for Electrical, Civil, and Mechanical Engineers ...J. Wiley & Sons, Incorporated, 1924 - Electric engineering |
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Page v
... electricity supply in this country . The authors ' experience indicates that the notes on power factor , load factor , and diversity factor , and the chapters on power - house development and on water - power will be appreciated widely ...
... electricity supply in this country . The authors ' experience indicates that the notes on power factor , load factor , and diversity factor , and the chapters on power - house development and on water - power will be appreciated widely ...
Page ix
... POWER FACTOR AND ITS IMPROVEMENT 219 · CHAPTER 6 . SOURCES OF ENERGY AND PRIME MOVERS 241 CHAPTER 7 . POWER PLANT DEVELOPMENT AND DATA 274 CHAPTER 8 . WATER - POWER : GENERAL CONSIDERATIONS 299 • CHAPTER 9 . WATER POWER ( contd ...
... POWER FACTOR AND ITS IMPROVEMENT 219 · CHAPTER 6 . SOURCES OF ENERGY AND PRIME MOVERS 241 CHAPTER 7 . POWER PLANT DEVELOPMENT AND DATA 274 CHAPTER 8 . WATER - POWER : GENERAL CONSIDERATIONS 299 • CHAPTER 9 . WATER POWER ( contd ...
Page 8
... Power factor . · P.F. or cos p . Foot Yard yd . Mile Metre . ft . ml . m . British Thermal Unit Board of Trade Unit ( or Kelvin ) Standard wire - gauge B.Th.U. B.T.U. or unit . S.W.G. Kilometre km . Home Office H.O. Centimetre cm ...
... Power factor . · P.F. or cos p . Foot Yard yd . Mile Metre . ft . ml . m . British Thermal Unit Board of Trade Unit ( or Kelvin ) Standard wire - gauge B.Th.U. B.T.U. or unit . S.W.G. Kilometre km . Home Office H.O. Centimetre cm ...
Page 9
... Power factor meter PF . Reverse power relay • • R / PR . ( e ) In the conventional sign for a primary cell ( see No. 38 , Table 4 ) , the thick stroke should represent the electro - positive element of the cell ( e.g. the zinc in a No ...
... Power factor meter PF . Reverse power relay • • R / PR . ( e ) In the conventional sign for a primary cell ( see No. 38 , Table 4 ) , the thick stroke should represent the electro - positive element of the cell ( e.g. the zinc in a No ...
Page 50
... power factor ' ) , which , under ordinary circumstances met with in practice , may vary from 06 to unity according ... power , expressed in kilowatts , and apparent power , expressed in kilo - volt - amperes . This point is discussed in ...
... power factor ' ) , which , under ordinary circumstances met with in practice , may vary from 06 to unity according ... power , expressed in kilowatts , and apparent power , expressed in kilo - volt - amperes . This point is discussed in ...
Common terms and phrases
3-phase alternating current aluminium ammeter ampere-hours amperes apparatus applied armature average boiler bus bars cables capacity Chapter charge circuit breaker coal coil condenser conductor connected constant consumption contacts copper cost current flowing curve cusecs cycles diameter dielectric strength dynamo earth eddy currents effect efficiency electrical electrostatic energy engines factor of safety feeder field frequency fuel full-load fuse heat higher increase induction installation instrument insulation iron lagging latter load factor loss machine magnetic maximum demand measured mechanical metal meter motor Ohm's Law operating output overhead lines phase pipe plant pole power factor practice pressure reactance reduced relay resistance rubber short-circuit shunt speed station steam steel supply switch Table temperature transformers transmission turbine units utilised varies velocity voltage voltmeter vulcanised watt-hour meter wattless wattmeter wave winding wire
Popular passages
Page 4 - As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere...
Page 4 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 4 - 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 18 - C, if the metal is in the form of a 1 cm. -cube, but since the resistance of a conductor is directly proportional to its length and inversely proportional to its cross-sectional area, it is 1'6 x 100 x 100 = 16 000 microhms = 0 '016 n if the 1 cu.
Page 5 - ... the Institution of Electrical Engineers has framed to secure satisfactory results with a supply of electrical energy at low pressures, not exceeding 250...
Page 31 - N. -seeking pole of a magnetic needle, as viewed from the conductor, is towards the left of the current. For certain particular cases in which a...
Page 469 - A. 18 of the regulations for securing the safety of the public, made by the Board of Trade under the Electric Lighting Acts, 1882 to 1909.
Page 217 - ... 25. Adequate working space and means of access, free from danger, shall be provided for all apparatus that has to be worked or attended to by any person.
Page 212 - For this reason sensitiveness is more correctly defined as the ratio of the difference between the maximum and minimum equilibrium speeds to the mean equilibrium speed.
Page 23 - 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...