7/25/2019 Fee Put Paper Skt

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CORPORATE INSTITUTE OF SCIENCE &

TECHNOLOGY , BHOPALB.E. (EC-II) SEMESTER

PUT EXAMINATION, JUN 2016

FANDAMENTAL OF ELECTRICAL ENGINEERING

TIME: 3HRS MAX MARKS: 7

!." #)Explain Active Power, Apparent Power & eactive Power!

$)Explain re"onance in #$ %erie" $ircit! '(at i" )*+actor

%)A reactor (avin- ne-li-i.le re"i"tance an/ an in/ctance o+ 0!1 i" connecte/ in "erie" wit( a re"i"tor o+ 1

! T(e circit i" connecte/ acro"" a 20 3, 0 4, "in-le p(a"e! 5in/ t(e

i7 $rrent +lowin- in t(e circit ii7 Power +actor o+ t(e circit

iii7 3olta-e acro"" t(e reactor iv7 3olta-e acro"" t(e reactor

!. #) 8rive t(e expre""ion +or a7 3# an/ 3P .7 I#an/ IP$)8erive t(e line an/ p(a"e volta-e relation +or a %tar connecte/ "9"te:

%) Two coil A an/ ; (ave re"i"tance" o+ 12 an/ 6 < an/ in/ctance" o+ 0!02 an/ 0!0 re"pectivel9! T(e"e are

connecte/ in parallel an/ a volta-e o+ 200 v , 0 4 i" applie/ to t(eir co::on ter:inal"! 5in/=a7$rrent in eac( coil .7Total crrent c7 Power +actor

!.3 #) Explain t(e +ollowin- a7 5or: 5actor .7 Pea> 5actor

$) Explain #$ %erie" circit!

%)T(ree in/ctive coil o+ 1< an/ an in/ctance o+ 0!0 are connecte/ in "tar to *p(a"e ?00 3, 0 4,

"ppl9! $alclate *

a7 P(a"e crrent

.7 #ine crrent

c7 Total power a."or.e/

!.' #)Explain power trian-le an/ power +actor!$) Prove t(at t(e power con":e/ .9 prel9 in/ctive an/ capacitive an/ capacitive circit i" 4ero!

%) 8raw an/ explain p(a"or /ia-ra: o+ a "in-le p(a"e tran"+or:er on loa/!

!. #) Explain power trian-le incl/in- Active, eactive & Apparent power!

$) Anal9"e a # circit an/ /raw t(e wave+or:"

%) A @3A, ?00200 3, 0 4, "in-le p(a"e tran"+or:er -ave t(e +ollowin- te"t re"lt" /rin- no loa/ an/ "(ort

circit te"t

No loa/ = ?003, 1A!60 ' pri:ar9 "i/e7

%(ort B $ircit = 1 3, 12! A, 0 ' pri:ar9 "i/e7

$alclate

i7 T(e no loa/ para:eter" 0an/ X: ii7 eCivalent re"i"tance an/ reactance re+erre/ to pri:ar9

iii7 e-lation at +ll loa/ an/ 0!D p+ la--in- iv7 Iron an/ copper lo""e" at +ll loa/

v7 E++icienc9 at +ll loa/ an/ 0!D p+ la--in-

!. #) 8e+ine t(e +ollowin-

a7 Ma-netic +iel/ "tren-t( .7 elctance

$) 'rite /own analo-9 .etween electric circit an/ :a-netic circit!

%)A "teel rin- o+ 2c: :ean /ia:eter an/ o+ circlar "ection c: in /ia:eter

(a" an air -ap o+ 1! :: len-t( ! It i" won/ ni+or:l9 wit( 00 trn" o+wire

carr9in- a crrent o+ 2A! $alclate*

1! M:+ 2! +lx /en"it9 !:a-netic +lx ?! elctance ! elative per:ea.ilit9 o+ "teel rin-!

!.7 #)8erive t(e EM5 eCation o+ tran"+or:er!

$) Explain /i++erent lo""e" in a tran"+or:er!

%) 8raw t(e co:plete con"trction o+ tran"+or:er wit( /etail"