Symbols 



(iM:inuscrij)l received October 20, 1953) 



The following list gives the symbols used through the several articles 

 appearing in tliis issue of the Journal. The list does not include all the 

 variant forms of the different symbols distinguished by subscripts, as 

 these distinctions are indicated in the context where they are used. 



MECHANICAL : 



a Cross sectional area 



C Length 



m Effective armature mass 



T Ivinetic energy 



T' Work done to overcome static load 



X Armature displacement 



ELECTRICAL : 



e Copper efficiency or fraction of the copper volume occupied by 



conductor 



E Applied battery voltage 



G Total eciuivalent single turn conductance 



Gc Eclui^'alent single turn conductance of coil; N /R 



Ge Eciuivalent single turn eddy current conductance 



G'e Effective single turn eddy current conductance; Ges'^^'^^^^^^^ 



Gs Eciuivalent single turn conductance of sleeve 



i Instantaneous current 



/ Steady state current 



m Mean length of turn in winding 



A^ Number of turns in winding 



4x 

 Li Single turn inductance; ,. ^ 



NI Ampere turns 



NIq Just operate or just release ampere turn value 



q Ratio of just operate to final ampere turns; -^-^ 



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