An Elementary Treatise on Alternating CurrentsLongmans, Green, 1902 - 211 páginas |
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Página 12
... maximum value of the current ( when the steady state is attained ) the total work done against the counter E.M.F. is the sum of the products- ildi St dt where St is a small element of time corresponding to the value i of the current ...
... maximum value of the current ( when the steady state is attained ) the total work done against the counter E.M.F. is the sum of the products- ildi St dt where St is a small element of time corresponding to the value i of the current ...
Página 13
... maximum value , and it has its equivalent in the potential energy stored up in the magnetic field . CASE II . Field due to currents in two mutually induc- tive circuits . If I and I are the maxima values of the two currents in the two ...
... maximum value , and it has its equivalent in the potential energy stored up in the magnetic field . CASE II . Field due to currents in two mutually induc- tive circuits . If I and I are the maxima values of the two currents in the two ...
Página 19
... value of e is therefore zero when pt is 0 or any multiple of 27 ; it then becomes positive and attains a maximum value π π ABp when pt is , or any multiple of 2 ; it becomes zero + 2 when pt , or any odd multiple of 7 , and then becomes ...
... value of e is therefore zero when pt is 0 or any multiple of 27 ; it then becomes positive and attains a maximum value π π ABp when pt is , or any multiple of 2 ; it becomes zero + 2 when pt , or any odd multiple of 7 , and then becomes ...
Página 20
William Gould Rhodes. If E is the maximum value of e- and- EnABp . e = E sin pt ( 3 ) ( 4 ) Such an E.M.F. is called Alternating because during each revolution of the coil it rises from the value zero to a positive maximum , then passes ...
William Gould Rhodes. If E is the maximum value of e- and- EnABp . e = E sin pt ( 3 ) ( 4 ) Such an E.M.F. is called Alternating because during each revolution of the coil it rises from the value zero to a positive maximum , then passes ...
Página 25
... maximum value of the current . Equation ( 8 ) shows that the P.D. is zero when t = 0 , and equation ( 12 ) shows ... maximum values later in point of time than , or lags behind , the P.D. by an amount 0 p The E.M.F. of self - induction ...
... maximum value of the current . Equation ( 8 ) shows that the P.D. is zero when t = 0 , and equation ( 12 ) shows ... maximum values later in point of time than , or lags behind , the P.D. by an amount 0 p The E.M.F. of self - induction ...
Otras ediciones - Ver todas
An Elementary Treatise on Alternating Currents William Gould Rhodes Sin vista previa disponible - 2016 |
An Elementary Treatise on Alternating Currents William Gould Rhodes Sin vista previa disponible - 2019 |
Términos y frases comunes
alternating current alternating-current amperes Answer applied P.D. armature B.Sc C. P. Steinmetz capacity CHEMISTRY choking coil College condenser conductor constant core counter E.M.F. Crown 8vo cubic centimetre curve D.Sc di-phase currents Diagrams E.M.F. of self-induction eddy currents ELECTRICITY ELEMENTARY ENGINEERING equal equation frequency henry hysteresis i₁ Illustrations induction motor instantaneous value iron losses lags lines of force machine magnetic field maximum value mean square mono-phase mutual induction non-inductive resistance ohms output parallel periods per second phase PHYSIOLOGY Plates pole potential difference power factor power given PRACTICAL primary circuit primary current Professor published by Longmans R.M.S. value r₁ r₁² reactance respectively right angles root mean square rotation Royal 8vo Scientific Works published secondary circuit self-induction square centimetre stator synchronism terminals tions torque transformer TREATISE tri-phase v₁ vector voltage volts wattless wattmeter watts winding wire zero
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