## Polaris Placement Papers

Polaris quantitative aptitude questions

Polaris Interview Questions 01 May 2012

Polaris C++/ Java Interview Questions 01 May 2012

Polaris Technical Model Test Paper

Polaris Aptitude paper

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# Polaris Written Test Paper 2013

Posted on :29-01-2016

**Q1.**What motor is used in ceiling fan & washing m/cs

**Q2.**In electric traction

**Q3.**What is 8255 4 8085 has ___ address and ___ data lines

**Q4. 8051 is a ____ bit micro controller**

**8 bit**

__ANS__:**Q5.**74LS244 is _____

**Q6.**Bucholz relay is used for _____ protection (transformer)

**Q7.**Transmission line parameters are called ____

**Q8.**No. of poles and freq given find speed

**Q9. In which motor starting torque can be incr by adding rotor resistance**

**(IM) there were 4 qns from Power plants (had to guess in that) 4 qns from Controls (pretty easy.....like zeta L>1 means.**

a) under dampedb) undampedc) over dampedd) critically damped

**Q10.**Question about transistor basic working

**Q11.**Boolean expression was given for simplification-simple

**Q12. How many flags does 8085 have?**

**5**

__ANS__:**Q13. Which of the following are universal gates?**

**nand, nor**

__ANS__:**Q14.**What is the frequency range of mobile communication?

**Q15. The resolution of picture in tv depends on..**

a. no: of lines scannedb. video detector o/p and 2 more choices were given...

**Q16.**Question on stability of FET

**Q17. What is the modulation used to transmit sound in tv signal**

a. VSBb. FM and 2 more choices were there...

**Q18. What is double integration of a unit step signal?**

a. ramp signalb. parabola

**Q19.**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............

**Q20.**Rdbms covers Define Query (simple but 4 options made some complications)

**Q21.**Datastructure : order of randomly searched binary tree

**Q22.**Electronics based questions which covers microprocessor 80386 (not 8085) 2 or 3 questions

**Q23.**A pulse is passed through a pipe..to detect any damage..this process is called ..........

**Q24.**Frequency reflectometry 2) Time reflectometry 3) Piggy backing

**Aptitude 1 :****Q1.**Given a 3x3 matrix, find the minor of one of the elements

**Q2.**Find the odd one out of the series 48 47 44 40 3 2 23 12

**Q3.**A goes to school at 4 kmph and reaches 10 mins

**Q4. Schedule and at 3 kmph reaches 10 mins after schedule find thedist**

__ANS__:**4 km 4 Meaning of COY (iritated)**

**Q5.**Opposite of Grimace

**Q6.**Opposite of FLOODED WITH

**Q7.**JUMBLED letters find out the word, the word was FATIGUE

**Q8.**Simple interest problem

**Q9.**Smallest of four given fractions

**Q10.**A guy walks 4kmph from a point..After 4hrs a cyclist starts from the same point 10kmph....At what distance will they meet from the starting point?

**Q11. X% of people have tea, y% have coffee, z no: of people have both...find the total no: of people...**

**easy..have to use**

__ANS__:*n(AUB)=n(A)+n(B)-n(A intersctn B)*..

**Q12.**Complete the series....

1,4 ,9,25,... (choices- 47,49,64,none)

**Q13. Analytical question**

**Failures are stepping stones to success this means...**

a. all success are preceded by failuresb. success consists of failuresc. failures can lead to successd. none..

**Q14.**About matrices.. which of the following do not have inverse?

|A|=0...time

**Q15.**There was 1 big square which had 16 squares in it..4 in a row & column each square had a no: in it.. except one square..had 2 find the missing number.

**Q16. 4 sentences given & 4 choices of word given...have to choose 1 word that suits all the 4 sentences... the police are ___ about the missing boy in the forest. the detective was ___ her face for marks. and 2 more sentences were there... choices(investigating, searching....).**

**investigating.**

__ANS__:**Q17.**HCF of 2 numbers...1024 & 1214...

**Q18.**Out of 500 students, 75% of boys and 72% of girls passed.Total pass percentage is 77%.How much girls ...?

**Q19.**How many prime numbers are between 1 to 100?

**Q20.**A greater than B and B less than C. What is the relation between A and C?

**Q21. 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)

**Section A - 35 questions (arithmetic)**

**Section B - 7 questions (analytical)**

**Section C - 10 questions (VERBAL ANALOGIES).**

__Section-A__

**These are the questions from R.S. Aggarwal arithmetic.(1 to 5).**

**Q1.**Page no: 27 , ex:-15

**Q2.**Page no:-63, q : 76.

**Q3.**Page 177 , ex:- 18.

**Q4.**Page 257, ex :-3 (this model -there is some change in this question., the question is: who will do the work in least time among a, b, c?)

**Q5.**Page 327 , q:-9.

**Q7. Which is the prime number?**

a. 119b.115c.127d. none.

__ANS__:**c**

**Q8.**If x is an odd integer, which of the following is even: ( answer for this question is 2(n+1). )

**Q9. There are 30 balls, out of which 60% are green balls and the rest are blue balls. how many ways that we can pick the pair of blue balls?**

a. 21b. 2c. 2 .d. none

__ANS__:**2**

**Q10.**An officer is getting the salary of S rupees for H days of work, he has taken x days of medical leave, then what is his average salary per day?

**Q11. How many 2 digit numbers, which is a square, with last digit as 8?**

**0**

__ANS__:**Q12. One tank will fill in 6 min air the rate of 3cu ft /min , length of tank is 4 ft and the width is 1/2 of length, what is the depth of the tank?**

**3 ft 7.5 inches**

__ANS__:**Q13. Find the next number in the series 3,4,6,9,13,?**

**18**

__ANS__:**Q14. Which one is the least likely of the other?**

a. triangleb. spherec. pyramidd. circle.

**Q15. The straight distance between A and C IS 60 miles, the straight distance between A and B is 50 miles. the straight distance between B and C is 50 miles then what is the distance from B to the straight line of A AND C?**

**40 miles**

__ANS__:**Q16. How many marbles that B has finally?**

__ANS__:**2 (3y-x-z)**

**Q17. If the total number of marbles are 72, then how many marbles A had initially?**

a. 22b. 20c.36d.39

**39**

__ANS__:**Q18. A is 8 km east of B.B is 10 km north of C C s 13 km east of D, E is 2 km north of D. Then what is the shortest distance between A and E?**

a. 5 kmb. 6 kmc. 13 kmd. 18 km

**Q19.**If the cost price of an item is x rupess,it was sold out after the successive discounts of y% and z%. then what is the selling price of the item?

**Q20. Cost price of an item is $50,the price has been increased to 108% ,and after some days it was sold out with the discount of 10%, then what is the sold price of the item?**

**$ 48.60**

__ANS__:**Q21. How many 3 digit numbers are there in between 100 and 300, having 1st and the last digit as 2.**

a. 9b.10c. 11d. 12

__ANS__:**10**

**Q22. If a=26, b=25, c=23...............z=1. Then what is the value of z+y+x+...........+a = ?**

a.351b.531c.335d. 235

__ANS__:**351**

**Q23. Pipe A will fill the tank in 6hr and B in 4hr, if the pipes are opened alternatively, in which A is opened first, then how many hours it will take to fill the tank?**

**5hr.**

__ANS__:**Q24. A ,B, and C ,went to do mean in a hotel, A has paid 50% more than the amount that B has paid. and c has paid 5/6 of that of A has paid. also B has paid $2 more than that os c has paid. then what is the total amount that all the three paid for their meal?**

**$ 30**

__ANS__:**Q25. Cost price of the item is $2500 ,in the year end it will be 4/5,after 3 yrs, what will be the cost?**

__Section -B__

This section contains analytical 2 questions-(there are 2 questions in 1st ans 5 questions in 2nd)

**Q1. There are 2 marriage groups red and brown, in which no individuals from the same group can marry each other, if a guy marries a gal of any group the guys group becomes that of the gal.The children have the same group as their parents. diversed and widowed guys go to their own birth group. questions are:**

A. For girl is in brown group then?

a. Grand father is in red groupb. grand father is in brown group.c. grand mother is in brown group.d. grand father in both the groups.

B. If girl is in red group then?

**Q2. A causes B or C but not both D occurs only if B occurs G occurs if E or F or both occurs.**

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