Electrical Meterman's Handbook

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Trow Press, 1915 - Electric meters - 1335 pages
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Page 59 - 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 27 - 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 1323 - With arms held straight, swing forward slowly, so that the weight of your body is gradually brought to bear upon the patient. The shoulder should be directly over the heel of the hand at the end of the forward swing. Do not bend your elbows. This operation should take about two seconds.
Page 1323 - As soon as this artificial respiration has been started, and while it is being continued, an assistant should loosen any tight clothing about the subject's neck, chest, or waist.
Page 1323 - Now immediately swing backward so as to remove the pressure completely. (5) After two seconds, swing forward again. Thus repeat deliberately twelve to fifteen times a minute the double movement of compression and release, a complete respiration in four or five seconds.
Page 52 - Henry, which is the induction in a circuit when the electro-motive force induced in this circuit is one international volt while the inducing current varies at the rate of one Ampere per second.
Page 605 - Inspector shall order the gas or electrical corporation forthwith to remove the same and to place instead thereof a correct meter, and the...
Page 153 - During the time when energy is being delivered to the circuit, the product of voltage and current is positive; that is, the voltage and the current have the same sign. When either voltage or current is reversed with respect to the other so that this product is negative, power is being returned by the circuit to the source, and is then reckoned as a negative. The net value of the energy delivered to the circuit per cycle is equal to the difference between the positive and negative values of energy...
Page 75 - 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 599 - ... 100 per cent of the rated capacity of the meter, tests shall be made at the nearest obtainable loads to 10 per cent and 100 per cent of rated capacity of the meter and values given in the ratios as stated above.

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