DEPARTMENTOF TECHNICAL EDUCATION ,A.P.Name : Ch Jyothi Designation: enio! Le"t#!e!$!an"h: E%e"t!i"a% Enginee!ingInstit#te : &o'e!nment Po%yte"hni",P!o((at#!)ea!*emeste! : I+ emeste!#,-e"t: A C MACHINE . ICo(e No: EE./01To2i" : ing%e Phase T!ans3o!me!sD#!ation: 40 Mins.#, To2i":T!ans3o!mation Ratio 5 P!o,%ems on E.M.F. E6#ation o3 a T!ans3o!me!Tea"hing Ai(s: PHOTO 5 DIA&RAMEE /01.78Recap9:o!;ing o3 8.< t!ans3o!me! 9Const!#"tion (etai%s o3 t!ans3o!me!9E.M.F e6#ation o3 a t!ans3o!me!Objective:On"om2%etion o3 this to2i" , yo# =i%%,ea,%e to:

9 Un(e!stan(the t!ans3o!mation !atio 9Ho= to so%'e 2!o,%ems on E.M.F e6#ation

EE /01.71Transformation Ratio9+o%tage T!ans3o!mation !atio >?@The !atio o3 se"on(a!y 'o%tage to 2!ima!y 'o%tage is;no=nasT!ans3o!mation!atioIt is!e2!esente(,ythe %ette! ?

? A +B*+8 EE /01.7/Transformer ratio contd..In an I(ea%T!ans3o!me! +8AE8 +BAEBhen"e'o%tage!atio+B * +8 A EB * E8 A/.//3NBii@ the in(#"e( e.m.3.in these"on(a!y=in(ing.9 List the 3o!m#%as that a!e #se3#% he!e

EE /01.77&i'en (ata:9 No. o3 2!ima!y t#!nsN8A 1409 No. o3 se"on(a!y t#!ns NB A 80409 +o%tage a22%ie( to the 2!ima!y+8 A /00+9 P!ima!y in(#"e( e.m.3.E8 A +8 A /00+9 Net"!oss se"tiona% a!eaA A 40 "mB A 40H80./ mB 9#22%y 3!e6#en"yA 40 HG

EE /01.7 ISolution:P!ima!yin(#"e( e.m.3. E8 A/.//3N81@the maHim#m 'a%#e o3 3%#H in the "o!e.EE /01.7 8BGiven data :9Rating o3 the t!ans3o!me! A 400 ?+A9P!ima!ya22%ie('o%tage +8 A88000 +9e"on(a!y 'o%tage+B A /00+9No. o3 se"on(a!y t#!ns NB A8009No. o3 2!ima!y t#!nsN8 ANBJEB*E8

EE /01.7 81Solution:9 A22!oHimateNo. o3P!ima!yt#!nsN8A NB J +8* +B A 800J88000* /00 N8ABF409 F#%% %oa(2!ima!y"#!!ent I8 A!ate( ?+AJ8000*+8 A 400 J8000 * 88000A/4./4 A9 F#%% %oa(e"on(a!y"#!!ent IBA !ate(?+AJ8000*+8 A400J8000*/00 A8B40 A

EE /01.7 8/Solutioncond.9P!ima!y in(#"e( e.m.3. E8 A /.//3N8KmA +89 MaHim#m 'a%#e o3 3%#H in the "o!eAE8*/.//3N8A 88000*/.//H40JBF40A0.087 =,.

EE /01.7 84Example 9 Asing%e 2hase E00*B10 + ,40 HGt!ans3o!me! has a "o!ea!ea o3 /00 "mBan(amaHim#m 3%#H (ensityo38.87=,*mB ,"a%"#%ate then#m,e! o3t#!ns in 2!ima!yan(se"on(a!y =in(ings .EE /01.7 8EGiven data:9 'o%tage a22%ie( to the 2!ima!y E8 AEE00 +9 se"on(a!y 'o%tageEB AB10 +9 s#22%y 3!e6#en"y 3 A40 HG9"o!ea!eaA A/00 "mB A/00H80./ mB9maHim#m 'a%#e o3 3%#H (ensityA8.87 T >=,*mB@EE /01.7 8FSolution:9 3%#H in the "o!e