Polaris Placement Paper Technical, Aptitude Questions 2011
Technical Section: 40 Questions in 30 Minutes
It
covered basics of almost all ECE subjects like about Transistors,
Digital & Microprocessors, Communication, Microwave etc, but
Questions were only basics nothing in deep and all questions had
choices.
1. Questions about Transistor basic working.
2. Boolean expression was given for simplification-simple.
3. How many flags does 8085 have? (ans-5)
4. Which of the following are universal gates?
(Ans. Nand, Nor)
5. What is the frequency range of mobile communication?
6. The resolution of picture in TV depends on..
a. Number of lines scanned
b. Video detector o/p
And two more choices were given…
7. Question on stability of FET
8. What is the modulation used to transmit sound in TV signal
a. VSB
b. FM
And 2 more choices were there.
9. What is double integration of a unit step signal?
a. Ramp signal
b. Parabola
Don’t remember the other Two…
(Ans. b)
10. Question about spectral density-basic.
11. Question about basics of finite fourier transform(FFT), It was something about 8pt FFT…don’t remember exactly…but if u know the definition you can do…
I am not able to memorize the rest frenz…but there were few more Questions on transistors…
1. Questions about Transistor basic working.
2. Boolean expression was given for simplification-simple.
3. How many flags does 8085 have? (ans-5)
4. Which of the following are universal gates?
(Ans. Nand, Nor)
5. What is the frequency range of mobile communication?
6. The resolution of picture in TV depends on..
a. Number of lines scanned
b. Video detector o/p
And two more choices were given…
7. Question on stability of FET
8. What is the modulation used to transmit sound in TV signal
a. VSB
b. FM
And 2 more choices were there.
9. What is double integration of a unit step signal?
a. Ramp signal
b. Parabola
Don’t remember the other Two…
(Ans. b)
10. Question about spectral density-basic.
11. Question about basics of finite fourier transform(FFT), It was something about 8pt FFT…don’t remember exactly…but if u know the definition you can do…
I am not able to memorize the rest frenz…but there were few more Questions on transistors…
Aptitude Section: 30qns in 30min, All Questions had choices.
1. Completing Series of alphabets was given.
2. A guy walks @ 4kmph from a point, After Four hrs a cyclist starts from the same point at 10kmph, At what distance will they meet from the starting point?
The question was almost like this don’t remember exact wordings.
3. x% of people have tea, y% have coffee, z number of people have both, find the totalnumber of people.
Solution: Easy have to use n (AUB)=n(A)+n(B)-n(A intersctn
4. Figure given & we have to find out the number of four sided figures in it, little complicated because less time.
5. Complete the series
1,4,9,25,… (choices- 47,49,64, none)
6. Complete series
7. Analytical Questions
“failures are stepping stones to success” this means…
a. all success are preceded by failures
b. success consists of failures
c. failures can lead to success
d. none..
8. About matrices.
which of the following don’t have inverse?
you have to find for which matrix |A|=0…time consuming.
9. Another about matrices.
10. There was one big square which had 16 squires in it. four in a row & column.. each square had a number in it.. Except one square. had 2 find the missing number I don’t remember the numbers
11. For sentences given..& four choices of word given…have to choose 1 word that suits all the for sentences…
The police are ___ about the missing boy in the forest.
The detective was ___ her face for marks.
And two more sentences were there…choices (investigating, searching….).
ans. Investigating.
12. Opposites… sluggish x rapid
13. Rising x setting
14. Meanings…easy
15. Meanings…
16. HCF of two numbers 1024 & 1214…don’t remember numbers.
2. A guy walks @ 4kmph from a point, After Four hrs a cyclist starts from the same point at 10kmph, At what distance will they meet from the starting point?
The question was almost like this don’t remember exact wordings.
3. x% of people have tea, y% have coffee, z number of people have both, find the totalnumber of people.
Solution: Easy have to use n (AUB)=n(A)+n(B)-n(A intersctn
4. Figure given & we have to find out the number of four sided figures in it, little complicated because less time.
5. Complete the series
1,4,9,25,… (choices- 47,49,64, none)
6. Complete series
7. Analytical Questions
“failures are stepping stones to success” this means…
a. all success are preceded by failures
b. success consists of failures
c. failures can lead to success
d. none..
8. About matrices.
which of the following don’t have inverse?
you have to find for which matrix |A|=0…time consuming.
9. Another about matrices.
10. There was one big square which had 16 squires in it. four in a row & column.. each square had a number in it.. Except one square. had 2 find the missing number I don’t remember the numbers
11. For sentences given..& four choices of word given…have to choose 1 word that suits all the for sentences…
The police are ___ about the missing boy in the forest.
The detective was ___ her face for marks.
And two more sentences were there…choices (investigating, searching….).
ans. Investigating.
12. Opposites… sluggish x rapid
13. Rising x setting
14. Meanings…easy
15. Meanings…
16. HCF of two numbers 1024 & 1214…don’t remember numbers.
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