BEL  Placement Paper   Technical - Electronics   all India-4 Jun 2010

BEL  Placement Paper   Technical - Electronics   all India-4 Jun 2010


  • Posted by  FreshersWorld 
    7 Jan, 2012

    there were total of 150 ques and a time of 2.30 hrs. for ece  branch.
    q-1 based on passege and 6 ques.
    q-7-8 synonyms
    q 9-10 fill in the blanks
    15-20 a table was given and we have to ans based on that
    21-25 again simple ques based on puzzle test.
    26-30 simple ques based on series like
    four rules were given and we have to identify what type of rule is being followed by series.
    now technical part started
    based on all subjects ie. analog electr,digital elec,analog n digital comm.,op-amp,radar,s-xform,con system,microwave .few ques r like this

    what is laplace xform of integral of f(t).
    one based on xfer func
    lap xfom of c1f(t)+c2f(t)
    by adding pentavalent imp which semi cond is formed
    commonly used trivalent imp.
    if a -ve feedbak is used then what is o/p r+s or r-s
    1 based on routh hurwitz
    unit of conductivity
    angstorm=?10^-10 m ,etc
    which of the foll is analog modln
    which of the foll is digital  modln tech
    amplify gives more o/p than i/p isnt it violation of law of enegy
    Ans. it use dc power so law is not  violated
     based on ic-555
    antena used for tv
    name of satelite use for earth resources
    radar ques based on prf,radar eqn,
    which is tracking radar
    standard time taken in tv scan
    alpha of plumbicon tube
    gauss law
    2-3 ques on microprocessor
    which window is used for n/w
    min ram reqd in 95 window
    seq after(777)8 n (1111)2 here 8 n 2 r base in digi elec.
    853.29 can be represented as _____ in float represent
    shifting left is equalent to---------ans. multiply by 2
    if we req o/p eual to i/p then which flip-flop wii be used
    gate use for making inv-----ans nand
    area under unit impulse
    in whic amp curr flows for full cycle---a,ab,c
    whic antena is not omnidir
    many ques from microwave
    which jun is formed by recrystallization
    at microwave freq ohm law is
    a)J=sigmaE b)J=sigma/E






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