REGI STEREDMASTERELECTRI CI ANLi censur eExami nat i on Fr i day, Mar ch19, 2010 1: 00p. m. 5: 00pm TEHCNI CALSUBJECTS I NSTRUCTI ON: Sel ectt hecor r ectanswerf oreachoft hef ol l owi ngquest i ons.Mar konl yoneanswerf oreach i t em byshadi ngt heboxcor r espondi ngt ot hel et t erofyourchoi ceont heanswersheet pr ovi ded.STRI CTLYNOERASURESALLOWED.Usepenci lNo.1onl y. MULTI PLECHOI CE 1. A6vol tl eadaci dbat t er yhasani nt er nalr esi st anceof0. 01ohm.Howmuchcur r entwi l lf l owi ft hebat t er y hasashor tci r cui t ? a.60A b.600A c.i nf i ni t y d.zer o 2. Abi nar yal l oyofcopperandz i nc. a.Br onz e b.Br ass c.Al ni co 3. Ther esi st anceofaconduct orwheni t st emper at ur ei si ncr eased, a.i ncr eases b.r emai nconst ant c.var i es d.St eel d.decr eases 4. Avol t agesour ceof20Vi sappl i edacr osst het er mi nal sofa2. 5ohm r heost at .Cal cul at et hepower di ssi pat edi nt her heost at ? a. 160W b.100W c.150W d.180W 5. Uni tofel ect r i calpr essur ei s a.wat t b.amper e c.ohm d.vol t 6. Twor esi st or sofr esi st ances5ohmsand7ohmsar econnect edi nser i esacr ossa60vol tsour ce.Whati s t hepowerabsor bedi nt he5ohm r esi st or ? a.50wat t s b.25wat t s c.125wat t s d.100wat t s 7. Whenusi ngohmsl aw, Edi v i dedbyIwoul dsol vef or a.wat t s b.amper age c.vol t age d.r esi st ance 8. I nr esi st ancecol orcodi ng, r edcol ori sassi gnedt oaval ue a.3 b.0 c.2 d.1 9. Anel ect r i ci r ont akes3½ amps.I ft heheat i ngel ementhasar esi st anceof40ohms,whati si t spower consumpt i on? a.0. 45kW b.0. 49kW c.0. 35kW d.0. 51kW 10.Anot hernamef orasecondar ycel l . a.Wetcel l b.St or agecel l c.Dr ycel l d.Di sposabl ecel l 11.Twor esi st ancesof8and10ohmsr espect i vel yar econnect edi npar al l elandt akeat ot alcur r entof9A. Whati st hecur r entf l owi ngi nt he8ohm r esi st ance? a.5A b.4A c.6A d.3A 12.Whati st her esi st ancemustbeconnect edacr ossa4ohm r esi st ori nor dert ogi veanequi val ent r esi st anceof3ohms? a.10ohms b.8ohms c.12ohms d.Noneoft hese 13.Howi svol t met erconnect edi naci r cui t ? a. Connecti nshor tci r cui tacr osst hel oad b. Connecti nshuntacr osst hel oad c. Connecti nser i esacr osst hel oad d. Connecti nopenci r cui twi t ht hel oad 14.Componentofanat om t hatdoesn’ thav eanyel ect r i calchar ge. a.El ect r on b.Pr ot on c.Neut r on d.Noneoft hese Page 1 REGI STEREDMASTERELECTRI CI ANLi censur eExami nat i on Fr i day, Mar ch19, 2010 1: 00p. m. 5: 00pm TEHCNI CALSUBJECTS 15.Al eadaci dcel li sconst r uct edi nmul t i pl ef ort hepur poseof_ _ _ _ _ _ . a. i ncr easi ngt heemfoft hecel l b. i ncr easi ngt hecapaci t yoft hecel l c. i ncr easi ngt hei nt er nalr esi st anceoft hecel l d. al loft hese 16.Ameasur i ngi nst r umentusedt omeasur et hedi amet erofci r cul arwi r esi nmi l l s. a.Mi cr omet er b.Mi l l i met er c.Wi r egauge d.Mi l l i ammet er 17.Theel ect r oni nt hel astor bi tofanat om ar ecal l ed a.boundel ect r ons b.f r eeel ect r ons c.val enceel ect r ons d.char gedel ect r ons 18.A400MCM cabl ehas37st r ands.Whati st hedi amet eri feachst r andi nmi l l s? a.10. 81 b.1081 c.104 d.108 19.Thecopperf i el dcoi l sofamot orwasmeasur edat21oCandf oundt ohav ear esi st anceof68ohms.Af t er t hemot orhasr unf oragi vent i me, t her esi st ancei sf oundt obe90ohms.Whati st hehott emper at ur eof t hewi ndi ng? a.106. 36oC b.166. 30oC c.103. 66oC d.Noneoft hese 20.A secondar ycel li schar ged wi t h aconst antcur r entof10 A f or10 hour s.How much char gei s accumul at ed? a.100coul ombs b.360, 000coul ombs c.100, 000coul ombs d.60, 000coul ombs 21.Acel lwhoseemfi s1. 45Vhasani nt er nalr esi st anceof4ohms.Whatcur r entwi l l f l owi ft hi scel li s connect edacr ossa1 ohmsr esi st or ? a.0. 4A b.0. 2A c.0. 5A d.0. 3A 22.Whati st hedi amet erofacopperwi r ehavi ngacr osssect i onalar eaof3, 969CM? a.1. 6mm b.7. 8mi l l s c.0. 6i nch d.Noneoft hese 23.Whennequalr esi st or sar econnect edi nser i est oasour ceofemfEvol t s,eachhavi ngar esi st anceofR ohms, whi choft hef ol l owi ngst at ement si st r ue? a. Thevol t agedr opacr ossoneoft her esi st ori sequalt oE/ n b. Theequi val entr esi st anceoft heci r cui ti sequalt onR c. Thecur r entt hr ougheachoft her esi st ori st hesame d. Al loft hese 24.Gi veanex ampl eofanel ect r i calconduct or . a.Br ass b.Asbest os c.Sl at e d.Lat ex 25.Asmal ll i ghtbul bwi t har esi st anceof1000ohmsi sconnect edacr ossa120Vl i ne.Whati st hecur r ent t hr ought hebul b? a.1. 2A b.0. 12A c.0. 012A d.12A 26.Pr act i cal l yal lbat t er i eshaveanomi nalr at i ngbasedont he_ _ _ _hourr at eofdi schar ge. a.8 b.24 c.16 d.12 27.Theener gyst or edi nanel ect r ol y t i ccel l i s a.anel ect r i cal b.amagnet i c c.amechani cal d.achemi cal 28.Themostcommonusageofr esi st or si nel ect r oni cci r cui t si st o_ _ _ _ _ _ _ _ . a.l i mi tacur r ent b.i nt r oduceavol t agedr op c.gener at eheat d.al loft hese Page 2 REGI STEREDMASTERELECTRI CI ANLi censur eExami nat i on Fr i day, Mar ch19, 2010 1: 00p. m. 5: 00pm TEHCNI CALSUBJECTS 29.A200Vl amphasahotr esi st anceof400ohms.Thepowerr at i ngi nwat t soft hel ampi s a.100W b.200W c.600W d.250W 30.Abat t er yi schar gedat15Af or10hour s.I ft hechar gi ngvol t agei s120V, whati st hechar gi ngcostat 1. 00perkWhr ? a.15pesos b.18pesos c.12pesos d.20pesos 31.Howmuchcur r enti spr oducedbya60Vsour ceconnect edacr ossa12k(r esi st ance? a.5A b.7. 2A c.20mA d.5mA 32.I f18r esi st ances, eachofav al ueof36ohms, ar econnect edi npar al l el , t hent het ot alr esi st ancei s a.36ohms b.2ohms c.648ohms d.54ohms 33.Awi r ewhoser esi st ancei srohmsi sbei ngcuti nt of ourequal par t s.I ft hesepar t sar et obeconnect edi n par al l el , howmuchi st heequi val entr esi st ancei nohms? a.r / 12 b.r / 16 c.r / 8 d.r / 4 34.Ther esi st anceoft hemat er i al i ni nv er sel ypr opor t i onal t oi t s a.l engt h b.t emper at ur e c.cr osssect i onalar ea d.al loft hese 35.Anammet eri sconnect ed_ _ _ _ _ _ . a. acr osst hel oad b. i nser i eswi t ht hel oad c. i nser i espar al l elacr osst hel oad d. noneoft hese 36.I ft henumberofval enceel ect r onsi sexact l yf our , t hemat er i ali s a.aconduct or b.asemi conduct or c.ani nsul at ord.asuper conduct or 37.Commer ci aluni tofanel ect r i calener gy. a.Joul e b.Wat t hour c.Megawat t d.Ki l owat t hour 38.Whati st her esi st ancet hatmustbeconnect edi npar al l elwi t ha1. 0ohm r esi st ancet ogi veanequi val ent r esi st anceof0. 2ohm? a.0. 75ohm b.0. 25ohm c.1. 20ohm d.0. 50ohm 39.Whenabat t er yi sdi schar gedi nuse, i t svol t agei s_ _ _ _ _t het heor et i calvol t age. a.86. 73 b.96 c.63. 78 d.73. 86 40.Awat erheat ert akes2. 5Aat230V.Whati si t shotr esi st ance? a.20W b.980W c.500W d.200W 41.Anel ect r i ci r ondr aws15Aat220V.I ti sdesi r edt or educedt hecur r entt o12Abyconnect i ngaser i es r heost at .Whati st her esi st anceoft her heost at ? a.3. 66ohms b.4. 55ohms c.5. 12ohms d.1. 86ohms 42.Theabi l i t yofaconduct ort oal l owcur r entf l ow. a.Resi st ance b.Coef f i ci entofr esi st ance c.Conduct ance d.Per meabi l i t y 43.Bl uei sassi gnedt owhatdi gi tv al uei nt her esi st ancecol orcode? a.5 b.6 c.7 d.4 44.Thr ee120ohm r esi st orar econnect edi nser i espar al l el .Theequi val entr esi st anceoft hecombi nat i oni s _ _ _ _ . a.360ohms b.80ohms c.180ohms d.40ohms Page 3 REGI STEREDMASTERELECTRI CI ANLi censur eExami nat i on Fr i day, Mar ch19, 2010 1: 00p. m. 5: 00pm TEHCNI CALSUBJECTS 45.A25Wi ncandescentbul br at edat120Vandoper at edona120Vl i nehasbur ntoutandhast obe r epl acedassoonaspossi bl e.Ther ear esever all ampsavai l abl ebutnotoft hesamer at i ng.Whi choft he bul bsbel owshoul dbeusedt oappr oxi mat et hepowerconsumpt i onoft hebust edbul b? a.20wat t s, 110v ol t s b.100wat t s, 240vol t s c.50wat t s,240vol t s d.75wat t s,220vol t s 46.A r esi st orof3ohmsi sconnect edi npar al l elwi t honeof2ohm r esi st ance.I ft hecombi nat i oni s connect edi nser i eswi t ha4ohm r esi st or ,whati st heequi val entr esi st anceoft hewhol ecombi nat i onof t hr eer esi st or s? a.6. 4ohms b.5. 8ohms c.4. 5ohms d.5. 2ohms 47.Asubst ancet hatcannotbedecomposedanyf ur t herbyachemi cal r eact i on. a.I on b.El ement c.Mol ecul e d.Noneoft hese 48.Ar esi st anceof40hmsi sconnect edi nser i est oapar al l elconnect i onoft wo8ohm r esi st ance.Thet ot al r esi st ancei s a.6ohms b.20ohms c.8ohms d.12ohms 49.Onehor sepoweri sequi val entt ohowmanywat t s? a.746 b.764 c.674 d.Noneoft hese 50.Ar esi st orof4ohm r esi st ancei sconnect edi npar al l el wi t haser i escombi nat i onoft wor esi st or s, 3ohm and1ohm r espect i vel y.Whati st heequi val entr esi st anceoft hewhol ecombi nat i on? a.8ohms b.3ohms c.5ohms d.Noneoft hese * * *END* * * SUBMI TTHI STESTQUESTI ONSETTOGETHERWI THTHEANSWERSHEETTOYOURWATCHERS. BRI NGI NGTHETESTQUESTI ONSETOUTOFTHEROOM WI LLBEAGROUNDFORDI SCI PLI NARYACTI ON. Page 4