7/25/2019 II-II - EM&I - Unit-I - Question Bank

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VIGNANS UNIVERSITY:: VADLAMUDI

EE216 - Electrical Measuremets ! Istrumetati" #EM!I$

UNIT % I

1 Mar& 'uesti"s

1( T)e use "* +++++ istrumets is merel, c"*ie .it)i la/"rat"ries as staari0i

istrumets(

#a$ A/s"lute #/$ Iicati #c$ Rec"ri #$ Iterati #e$ "e "* t)e a/"e

2( 3)ic) "* t)e *"ll".i istrumets iicate t)e istatae"us alue "* t)e electrical

4uatit, /ei measure at t)e time at .)ic) it is /ei measure5

#a$ A/s"lute istrumets #/$ Iicati istrumets

#c$ Rec"ri istrumets #$ Iterati istrumets

( +++++ istrumets are t)"se .)ic) measure t)e t"tal 4uatit, "* electricit, eliere i a

7articular time(

#a$ A/s"lute #/$ Iicati #c$ Rec"ri #$ Iterati

8( 3)ic) "* t)e *"ll".i are iterati istrumets5

#a$ Ammeters #/$ V"ltmeters

#c$ 3attmeters #$ Am7ere-)"ur a .att-)"ur meters

9( Resistaces ca /e measure .it) t)e )el7 "*

#a$ 3attmeter #/$ "ltmeters

#c$ ammeters #$ ")mmeters a resistace /ries

6( 3)ic) "* t)e *"ll".i essetial *eatures is 7"ssesse /, a iicati istrumet5

#a$ De*lecti eice #/$ "tr"lli eice #c$ Dam7i eice #$ All "* t)e a/"e

;( A m"i-c"il 7ermaet-maet istrumet ca /e use as +++++ /, usi a l".

resistace s)ut(

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#a$ Ammeter #/$ "ltmeter

#c$ *luMM "ltmeter is c"ecte acr"ss a series c"m/iati" "* a c "ltae s"urce 1B2

a a ac "ltae s"urce

V2#t$ B si #8t$ "lts( T)e meter reas

#a$ 2V #/$ 9V #c$ 2 C #2 $ #$ 1;2

19( M"i ir" a >MM istrumets ca /e istiuis)e *r"m eac) "t)er /, l""&i at

#a$ >"iter #/$ termial si0e #c$ scale #$ scale rae

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16( Iucti" t,7e istrumet ."r&s " +++++++++++++++++ 7rici7le(

1;( De*ie multi7l,i 7".er i case "* ammeter s)ut(

1?( Meti" a, t." re4uiremets *"r s)uts i case "* ammeters(

2@( 3rite t)e eMM meters5

2( 3)at material is use t" mau*acture t)e s7ris i s7ri c"tr"l5

( 3)at is t)e 7rici7le "* Re7ulsi" t,7e m"i ir" istrumets5

8( 3)at are t)e i**eret t,7es "* Electr" static meters5

9( 3)ic) "ltmeter ."ul ,"u select *"r measuri 9@@@@ V irect curret5

6( List "ut t)e aataes "* s7ri c"tr"l "er rait, c"tr"l(

;( ". ca a milliammeter /e use as a "ltmeter5

=( T)e am7i t"r4ue " m"i s,stems is 7r"ie /, usi +++++++++++++ met)"(

?( Iucti" t,7e "* istrumet c"mes uer ++++++++++++ t,7e "* istrumets(

1@( Dam7i *"rce ca 7r"uce /, usi+++++++++++++++++ met)"s(

11( 3)at are t)e err"rs i MI t,7e meters5

12( Uits "* *lu< esit, is ++++++++++++(

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1( ++++++++++++++++++++++ istrumets )ae )i) "7erati t"r4ue(

18( At e4uili/rium 7"siti" e*lecti" t"r4ueB ++++++++++++++ t"r4ue

19( T)e ),steresis err"r is m"re i >MM .)e c"m7are t" MI #TrueHalse$(

16( I MI t,7e istrumet t)e am7i tec)i4ue use is+++++++++

HIVE Mar&s 4uesti"s

1( Discuss t)e aataes isaataes a err"rs i >MM istrumets5

2( Eermaet maet m"i c"il #>MM$ istrumet(

usti*, .), t)is meter is use "l, *"r D measuremet5

( Discuss t)e aataes isaataes a err"rs i MI istrumets5

8( E

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1( a( Descri/e )". 7"tetial iier arraemet is use *"r multirae

"ltmeters( Derie e

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6( a( A m"i c"il istrumet )as t)e *"ll".i ata um/er "* tursB1@@.it)

"* c"il B 2@ mm e7t) "* c"il B @ mm *lu< esit, i air a7 is @(1 ./m2(alculate

t)e e*lecti t"r4ue .)e carr,i a curret "* 1@ mA( Als" calculate t)e e*lecti" i*

s7ri c"stat is 2 1@-6Nmeree(

/( usti*, )". m"i ir" istrumet is use t" measure /"t) A a D( Derie

M"i ir" t,7e istrumet e*lecti t"r4ue a e