### HAL Electrical Previous Year Question Papers

Out of 160 questions there were 20 mathematical questions,10 vocabulary, 5 paragraph questions,10 fill in the blanks, 20 apttitude and rest was subject related.

1. partial differntiation of x^3*y^3/(x+y)^3
2. some points like (0,2,4), (2,5,-1) and (6,2,0) were given and were asked to find whether it is parabola, ecllipse, carboid or cycloid.
3. there were so mant conversion questions like binary to decimal, decimal to binary, decimal to oct, binary mulitiplicationsetc.
4. some laplace formulae related to sine and cosine terms.
5. fouries series of quarter symmetry
6. by appling rouths hurwits criterien we were suppose to find the nuber of roots the equation was something like 2s^4+s^3+4s^2+s i think so
7. damping is proportional to gain, sqrtof gain, 1/gain or 1/sqrt of gain
8. vocabulary like germs:diesease::, emulate:mimic::,
9. there questions about power plants like which plant correspondes to highest capital cost, highest running cost,lowest operational cost, efficiency of thermal plant etc
10. what is the present capacity of unit generation 200MW, 210 MW, 375MW or 500 MW
11. where in nuclear power plant is located like kota, talcher, kolghat,
12. there was 1 question realed to idduki, ramagundam power plants i dont know whether it is the odd 1 out of the hydro plants
13. there was 1 repeated questions related to the spacing b/w the phase conductors like 11m, 8m, 20m, 24m.
14. is megger related to hot wire instrument,moving coil or moving iron.
15. 1 question related to load factor.
16. in a two w/m method what is the condition for which both the w/ms are equal and opposite.
17. question based on inverter gate
18. question related to maximum overshoot.
19. 2 or 3 questions were related to step input, impulse i/p etc.
20. 1 question related to boolean algebra
21. some questin related to find the value of lambda to get no solution.
22. 1 question was related to find from the options of nquist criteria, bode plot, routh hurwits,
23. question related to expontial rise and fall of inductor.
24. given 2 poles and 50 hz freq to find the syn speed.
25. question based on inertia constant and p.u. values
26. quetion baed on power transfer capacity and voltage
27. SIL of 400 KV lines
28. 2 quetions based on maximum power transfer capacity from circuit theory.
29. apttitude ques of pipes and cisterns, compound interest, time and distance,cubes, hcf and lcm,multiplication,
30. for how many days there will food if 2 persons are supposed to leave. question related to this were asked.
31. questions related to angles i dont remember the quetions i remember only the options like pi/3, pi/6,pi/4. 1, -1, 1/2 1/sqrt2. etc
32. ouestion based on P&V, P&Q, V&delta.
33. how many HVDC links are presently in use in india.
34. there were 4 questions like if A*B represents Ais the son of B, C/D represents Cis the husband of D then how A and D are related.
35. to sort the odd number out from a box of given numbers.
36. Vrms and Vo of full wave rectifier
37. reflection coefficent of current of an open ended line. Anonymous said...

thanks for giving me a idea about how the exam is going to be......... Anonymous said...

Thank you sir ... thank you very much. this pattern really helped me as i was so confused about the exam pattern. Anonymous said...

Thank you for the info..I'll be thankful if u post some more question papers..
can we conclude that there are no questions over the subjects like digital signal processing or communication?

siva said...

U ROCK....Thanks for the help.

Unknown said...

sir can u pls post the sample paper of electronic and instrumentation please