Basic Engineering Circuit Analysis (11th Edition)

Chapter 11

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; Use the relation to find line voltage , and ... more

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; Use the relation to find phase voltage , and ... more

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; In wye connection, line current and phase ... more

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; Use the relation to calculate current , and... more

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; In wye to wye connection line current and phase... more

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; Use the relation to find line current for ... more

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; The left side of the circuit is delta connected... more

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; Apply voltage division to find voltage for ... more

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; As source and load both are balanced 3 phase, ... more

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; Use the relation to find line voltage for ... more

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; Use the relation to calculate load current : ; ... more

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; Use the relation to find current and calculate... more

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; Calculate voltage and use the relation to ... more

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; Use the relation to find power factor angle ... more

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;   is the complex power before power factor ... more

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; Use the relation to find reactive power at the ... more

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Use the relation to find phase voltage and for ... more

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; Calculate line voltages , and . ; more

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; Use the relation to find phase voltage and... more

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; Use the relation to find voltages , and : ; more

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Use the relation to find phase voltages and line ... more

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; Calculate the values of the impedances , , and... more

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; Calculate  the value of impedances , , and... more

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; Use the relation to find line current for ... more

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; Calculate , and .  ; more

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; Calculate the values of impedances , , and... more

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; Calculate phase voltage and line volatge and ... more

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; Calculate line voltage and use the value to ... more

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; Calculate line current and use the value to ... more

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; Calculate phase voltages ,,,, and . ; Calculate... more

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; Calculate load impedance and use the relation ... more

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; Use the relation to calculate line current , ... more

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; Use the relation to calculate line current , ... more

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; Calculate voltage and use the value in the ... more

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; Use the relation to find current for voltage... more

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; Use the relation to find current and ... more

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; Calculate voltage and use the relation to find... more

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; Use the relation to find current and use its ... more

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; Use the relation to find current and use its ... more

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; Use the relation to find current and use its ... more

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; Use the relation to find current and use its ... more

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; Use the relation to find current and use its ... more

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; Calculate impedance , and .  ; Use the ... more

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; Calculate current and use the value to find ... more

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; Use the relation to find line current for ... more

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; Calculate voltage and current . ; Use the ... more

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; Calculate current . ; Use the relation to ... more

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; Use the relation to find voltage drop across ... more

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; Use the relation to find load voltage : ; Use ... more

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; Calculate impedance and calculate equivalent ... more

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; Calculate impedance and calculate equivalent ... more

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; Calculate , and . ; more

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; Use the relation to find phase currents , and... more

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; Calculate impedance and calculate equivalent ... more

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; is the phase voltage of an equivalent wye ... more

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; Use the relation to find line current : ; ... more

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; A, B, C denote load terminals and a, b, c ... more

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; Calculate the load impedance and impedance... more

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; Use the relation to find current is the line ... more

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; Converting delta load to star using ; Use the ... more

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;   is the equivalent wye  voltage sourceTh ... more

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; Consider the  expression of is  substitute ... more

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  ;  From figure , converting delta into wye The ... more

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; The  expression is . Phase voltage always lag ... more

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; The line current value is given by Isolating ... more

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  ;   Converting delta connected impedance to its ... more

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;  As shown in figure 1  , &  are the equivalent ... more

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;   The star delta conversion diagram is shown ... more

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;  The expression of is ;   ; The value of is ... more

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; Consider the balanced three phase system, draw ... more

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; The load transformed from star to delta is ... more

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  ; value is evaluated as below  ;    ; Delta ... more

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; Converting the delta connected load to wye ... more

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; The delta connected load is converted to wye ... more

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; The instantaneous power for balanced three ... more

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; The  per phase apparent power and power factor ... more

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; Apparent power per phase and power factor angle... more

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; The phase voltage of equivalent wye connection ... more

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; The apparent power for load 1 in rectangular ... more

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  ; The phase current through load 1 is given by... more

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; Power factor angle of the source is given by... more

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; The phase impedance of balanced delta load is... more

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  ; Current is given by and substitute ; On ... more

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; The expression of in terms of power loss is ... more

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; Consider the phase voltage expression as ... more

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; Consider  expression  as ;   ; Total complex  ... more

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; Consider the expression of as ;   ; From the  ... more

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; Phase angle of load is given by ;  Per phase ... more

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; Consider power absorbed by load is  per phase ... more

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; The power is can be expressed as below  ;   ; ... more

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; The power is expressed as below  ;   ; The ... more

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; Source power of wye connected  load is ... more

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; The load 1 is connected in Y-form so load phase... more

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; The expression of is given by ;   ; Power ... more

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; The expression of is given by ;   ; Power ... more

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; The expression of is given by ;   ; Power ... more

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; The balanced three phase source serve four ... more

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; Power factor angle at load 1  and load 2 is ... more

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; Power factor angle at load 1 ,load 2,load 3 and... more

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; Power factor angle at load 1, load 2  and load ... more

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; Calculate voltage and power factor angles , ... more

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The rating value of load 3 is at lagging. ; ... more

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; Calculate voltage and power factor angles , ... more

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; Use the relation to find complex power and ... more

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; Use the relation to find complex power and ... more

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; Use to calculate complex power , where ... more

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; Use the relation to find complex power and ... more

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; Use the relation to find complex power and ... more

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; Given that complex power Calculate old power ... more

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; Use the relation to calculate phase current , ... more

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Calculating the complex power S in the incorrect ... more

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Calculate equivalent impedance , and by using ... more

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Calculating the line current in the incorrect ... more

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Calculating the real power P in the incorrect ... more

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Calculating the reactive power Q in the incorrect ... more

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