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Home » Placement Papers » Polaris Placement Papers »polaris Placement Paper 5

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Polaris Placement Paper


The test was for one hr.-- 40 technical qns (electrical) for 1/2 hr. and 30 aptitude qns (1/2 hr.)
 there are two sets of qn papers 

Some Tech qns

  1. What is motor is used in ceiling fan & washing m/cs

  2. In electric traction

  3. wt is 8255

  4. 8085 has ___ address and ___ data lines    

  5. 8051 is a ____ bit microcontroller (ans:8 bit)

  6.  74LS244 is _____

  7. Bucholz relay is used for _____ protection (trnsfrmr)

  8. Transmission line parameters are called ____ 

  9.   No. of poles and freq given find speed

  10.  In which motor starting torque can be incr by adding rotor resistance (IM) there were  4 qns frm Power plants (had to guess in that) 4 qns frm Controls (pretty easy.....like   zetaL)
        1 means a)underdamped       b)undamped         c)overdamped       d)critically damped

  11. qn abt transistor..basic workin

  12. boolean expn was given for simplification-simple

  13. How many flags does 8085 have? (ans-5)

  14. which of the following are universal gates? (ans-nand,nor)

  15. whts the frequency range of mobile communication?

  16. The resolution of picture in tv depends on..
     a. no: of lines scanned     b. video detector o/p   and 2 more choices were given...

  17. Qn on stability of FET

  18. Wht is the modulation used to transmit sound in tv  signal
      a. VSB
      b. FM   and 2 more choices were there...

  19. Wht is double integration of a unit step signal?
      a. ramp signal                                                                                             
      b. parabola

  20. It mainly covers Operating system..consists of questions in semaphore( 2 questions), job scheduling algorithms (shortest job),paging (2 or 3 questions),virtual  memory,hashing, etc  virtual memory is used for............

  21. Rdbms covers "Define Query"(simple but 4 options made some complications)

  22. Datastructure : order of randomly serached binary tree

  23. Electronics based questions which covers microprocessor 80386(not 8085) 2or  3 questions

  24. A pulse is passed through a pipe..to detect any damage..this process is called ..........
      a.  Time reflectometry
      b.  Piggy backing

  25. Given a 3x3 matrix, find the minor of one of the elements

  26. find the odd one out of the series 48 47 44 40 32 23 12

  27.  A goes to school at 4 kmph and reaches 10 mins b4 schedule and at 3 kmph reaches  10 mins after schdule find thedist (ans 4 km)

  28.  Meaning of COY (iritated)

  29. Opposite of Grimace

  30. Opposite of FLOODED WITH

  31. JUMBLED letters find out the word, the word was FATIGUE

  32.  Simple interest problem

  33. Smallest of four given fractions 

  34. A guy walks @ 4kmph from a point..After 4hrs a cyclist starts from the same point @ 10kmph....At wht distance will they meet from the starting point? the qn was almost like  this.

  35. x% of people have tea, y% have coffee, z no: of people have both...find the total no: of  people... soln: easy..have to use n(AUB)=n(A)+n(B)-n(A intersctn   B)..

  36. Complete the series.... 1,4 ,9,25,... (choices- 47,49,64,none)

  37. Analytical qn
      "failures are stepping stones to success" this means...
        a. all success are preceded by failures
        b. success consists of failures
        c.  future can lead to success                                                                           
        d. none.. 

  38. abt matrices.. which of the following don't have inverse? u have to find for which   matrix |A|=0...time consuming...

  39. There was 1 big sqr which had 16 sqrs in it..4 in a row & column.. each sqr had a no: in  it.. except one sqr.. . had 2 find the missing no:...i dont remember the nos...

  40. 4 sentences given..& 4 choices of word given...have to choose 1 word that suits all the 4 sentences... *the police  are ___ about the miising boy in the  forest. * the detective was ___ her face for marks. and 2 more sentences  were there... choices(investigating, searching....).ans:investigating.

  41. Hcf of 2 nos...1024 & 1214...don remember nos  exactly..like in rs aggarwal...

  42. out of 500 students,75% of boys and 72% of girls passed.Total pass percentage is 77%.How much girls ...?

  43. how many prime numbers are between 1 to 100?

  44. A greater than B and B less than C. what is the relation between A and C ?

  45. given a set of different sentences ...we have to choose an appropriate  word which should be matching with all sentences 
     eg: A person --------------the child
           The government---------------the people  options may be 1)saved 2)preserve (this is not the exact question)


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