Polaris Test Paper
The test was for one hr
40 technical Questions (electrical) for 1/2 hr. and 30 aptitude Questions (1/2 hr.) there are two sets of Questions papers Some Tech Questions
1 what 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 (Transformer)
8 Transmission line parameters are called ____
9 No. of poles and freq given find speed
10 In which motor starting torque can be increased by adding rotor resistance (IM) there were 4 questions from Power plants (had to guess in that) 4 questions from Controls (pretty easy…..like zetaL>1 means
a)underdamped b)undamped c)overdamped
d)critically damped
11 question about transistor..basic working
12. boolean expression 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. whats 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. Question on stability of FET
18. What 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
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18. out of 500 students,75% of boys and 72% of girls passed. Total pass percentage is 77%.How much girls …?
19. how many prime numbers are between 1 to 100?
20.A greater than B and B less than C. what is the relation between A and C ? 21.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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