Ntdc Nts 2016

Today NTDCL test MCQ's 1 The main Drawback of Feedback system is ______  2 The phase marin of system specifies _____  ! "n e#ectrode b$w cathode and anode is ca##ed _____  % &n CM the ()anti*ation noise depend on _____  + ,ideo ,ideo transmission on T, -roadcast is )s)a##y on ______  _____ _  . adders are pro/ided in radio recie/er for _____  0 raphica# difference b$w nFT and pFT _______  3 &n poison distrib)tion the probabi#ity of s)ccess is c#ose to____  4 5ptica# fibers depend on _____ associated with optica# recei/er6 17 8imp#e f#ip f#op can be constr)cted by which ate6 11 _____ ce##s make concentration #ayer of #ens6 12 9hich of comm)nication system is diita#: 1! " 9M 9M sina# is enerated by ___  1% &n comm)nication system fide#ity is pro/ided by____  1+ " ba#anced mod)#ator prod)ce _____  1. ;ecei/er ha/in poorer &F se#ecti/ity wi## ha/e poorer _____  10 -asica##y contro##er is _____  13 + 3. In critica!!' damped s'stem, dampin# factor of s'stem is 31. If a and b vectors are anti8para!!e!, t&en t&eir resu!tant is 32. %ca!ar product of para!!e! vectors is 33. In t&ree p&ase &a!f8-ave diode, ratio of avera#e output to ma"imum *C vo!ta#e per p&ase is 34. In t&'ristor, 8888888 a!ternatin# semiconductor !a'ers and 8888888 P? functions are present. 3$. * pro#ramer does 3(. In di#ita! e!ectronics, number of basic operations is 3/. 12/ can be represented as 30. )&ic& one is universa! #ate 3. Mutua! induction 4. T&e form in reference to a!ternatin# current -aveform represents ratio of  41. )&en current and vo!ta#e are  de#ree out of p&ase, po-er is 42. T&e instantaneous va!ue of sinusoida! *C current at 4$ de#ree is 43. *n inductor operates at $ V *C, 1 ;z frequenc' and /.( m* current. T&e va!ue of inductor is 44. Conversion of *C to >C is ca!!ed 4$. In common8base transistor, output is ta;en from 4(. orm factor of 22 V, $ z *C is

4/. C motor decreases -it& !oad increase $4. * tansfromer transforms $$. Transformer oi! must be $(. * constant current transformer s&ou!d not &ave $/. nit of potentia! is $0. If &orizonta! and vertica! components of eart& ma#netic 9e!d are equa!, t&en an#!e of dip is $. T&e 8888888 9e!d e"ists as !on# as t&e current is :o-in# t&rou#& t&e -ire. (. )&ic& -ave does not require an' p&'sica! medium for its propa#ation (1. 6!ectric dipo!e moment per unit vo!ume of die!ectric is ca!!ed (2. reen function met&od is used for (3. In piston, ma"imum temperature occurs at (4. In super &eater of t&e boi!er, 8888888 enters. ($. )&ic& copper -ire &as &i#&est tensi!e stren#t& ((. In outdoor substation, t&e !i#&tenin# arrestors are p!aced nearer to (/. )&ic& tests are performed on iso!ators (0. )&ic& one is suitab!e for transmittin# 3 ;) over 3 ;m distance (. * condenser condenses steam comin# out of  /. T&e !o-est ca!ori9c va!ue coa! is

/1. rap& bet-een disc&ar#e and time is ca!!ed /2. Coa! is brou#&t to po-er station b' /3. Main dra-bac; of feedbac; s'stem is /4. =no-!ed#e of transfer function is needed for @repeatedA /$. P&ase mar#in of s'stem speci9es /(. ?on8!inearit' caused b' servometer is //. In force8vo!ta#e ana!o#', moment of inertia is ana!o#ous to /0. *t brea;a-a' point, severa! branc&es of root !oci coa!ese because t&e s's tem c&aracteristic equation &as /. or zener re#u!ation, -e dont -ant zener current to fa!! be!o- ;nee current because 0. * semiconductor device is connected in series -it& batter' and resistance. If batter' po!arit' is reserved, t&e current drops a!most to . T&e device ma'be 01. or same pea; vo!ta#e, -&ic& -aveform -i!! &ave !east rms va!ue 02. 6!ectrode bet-een cat&ode and anode is ca!!ed 03. reatest possib!e amp!i9cation is ac&ieved in

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+69ho shared the nob#e peace award 271% with ma#a#a yo)saf*ai >ai#ash satyarthi .6&sha( dar is Finance minister  069ho is c)rret president of india arnab m)kher?ee 369ho won the 271+ cricket wor#d c)p ")stra#ia 46;ecent#y re#iio)s persona#ity banned by ban#adesh akir naik 176ak&ran as pipe#ine is Friendship =nity eace AcorrectB 116T& and m#n arreed on e#ection riin in 27 1! to form E&T  ?)dicia# commission AcorrectB 126 9hen army p)b#ic schoo# incident happened 1.dec 271% AcorrectB 1!6 5peration *arbea*ab was started to et rid of  Terrorism 1%6 "##ai >hwar dam is b)i#t by pak in >pk 1+6 Famo)s ____ "m?ad sabri was ki##ed in ?)ne 271. Qawwa# 8=-ECT 16 Form factor is the ratio of  ;ms /a#)e to a/ /a#)e eak /a#)e to ;ms /a#)e ;M8 /a#)e to peak /a#)e "/ /a#)e to peak /a#)e

26 Form factor of 227/ +7@* sin)soida# /o#tae sina# is 16+ 161% 1611 763+ !6 &nstantaneo)s /a#)e of sin)soida# wa/e at %+ deree is e()a# to ;M8 ,a#)e "/erae /a#)e eak /a#)e eak to peak /a#)e %6 120 can be written as 7111 1111 1111 1111 1777 7777 1111111 +6 The main f)nction of transfer f)nction of any system is to To et o)tp)t from inp)t .6 =nit f potentia# is ,o#t 06 F)nction of transformer is to transform ower C)rrent ,o#tae 36 &f the #oad of a dc motor increases Decrease eddy c)rrent #osses Core #osses 46 Thyristor ha/e __ #ayers of semicond)ctors and __ pn ?)nctions 2 ! ! % % ! ! ! 176 " semicond)ctor de/ice is connected to battery )pon chanin the po#arity of battery the c)rrent red)ced to *ero de/ice is  N type semicond)ctor   type semicond)ctor  N ?)nction

116 9hich confi)ration of transistors ha/e hihest  ain Common emitter  Common base Common co##ector   None 126 &n common base mode the o)tp)t is taken from mitter Co##ector  From both 1!6 &n dep#etion type M58FT b)bb#e is on ate Drain 8o)rce 1%6 rincip#e of fiber optics transmission s Tota# interna# ref#ection 1+6 &n fiber optics different cons)mers m)#tip#e