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BHEL PAPER - 29 NOV 2009 - HYDERABAD


Hi Friends

BRANCH: ELECTRICAL

Technical Questions

1. SCR of an alternator is ____ (Ans: inversely proportional to Xs adjusted in P.U)

2. In Synchronous Impedance method the regulation is ____ (Ans: Higher than actual)

3. Thyristor which is in forward blocking method will conduct if ___ (Ans: Positive gate pulse to Cathode)

4. SC test of T/F will give _____ (Copper lossers)

5. 741 IC is an ______ (OP amp)

6. For ideal Op amp ____ (Zin =infinite and Zout = 0)

7. S^2-5s+20/S^2+5S-20 ______ (All pass or Band Eliminator or....)

8. Memory allocated for LIFO is ____ (Stack)

9. A register which stores the address of the instruction to be executed is ____ (Program Counter)

10. MHO relay is a ___ (Directional Over current relay)

11. A directional relay has _____ type of characteristics

12. MC is used for ___ (measuring DC)

13. A Converter can be operate as inverter if ___ (Ans Full converter (may be) Commutation circuit also)

14. Coupling  used when the shafts are not inline ______ (Universsal)

15. first Nuclear Power plant in India is _____ (Tarapur)

16. Nuclear and Thermal are used as _____ (Base Load plants)

17. Which Plant has max No. of auxillaries ______ (Thermal)

18. In T/L to transfer max power ______ (---)

19. An Cascade amplifier has which type of intermediate stages ___ (CE-CB)

20. Syn M working @ UPF if Exc is increased it operates at ____ (Lead PF)

21. Current corresponding to max Efficiency in a T/f given Pi and R ____ (Sqr Rt of(Pi/R)

22. Input to Stator of I/M is 40 KW slip is 5% then Torque in Syn Watts when Stator Cu losses & Iron losses are Neg _______ (38 W)

23. Blocked Rotor Test givs ______ (Cu losses)

24. N type impurity is _____ (Phosporous)

25. An Eg of Semi Conductor _____ (Germenium)

26. Cable insulation resistance is _______ (inversely proportional to length)

27. Hand driven tools use _____ (Shaded pole induction motor)

28. A Hysteresis Motor runs at _____ (Sync, Sub- Syn & Super Syn Speed)

29. Octal 56 to Binary _____ (46)

30. Sinusoidal Pulse width Modulation what can be controlled ____ (freq, Volt & Harmonic)

31. A nullator is a _____ (find out)

32. First law of Thermodynamics ____ (Q=dU+W)

33. In watches which type of oil is used _____ (find out)

34. In shafts for operating at high temp type of lubricant used is ____ (find out)

A couple of questions on Thevenin.
Some questions on Control systems (Basics)
Some on Alternator and T/f parallel operations (6 Qs)

Non Technical::

Quants:
Questions on Venn diagrams (10), Percentages-Ratios-averages, Speed and Work, Kinematics, Shares, Time and Distance, Calendars, Geomentry (20 Q from Basics)..

English:
Sentence correction( 5), Vocab(Syn n Ant10 Q), Jumbled sentences (5), RC (5 Q), Spellling Mistakes (5Q)

Reasoning:
Blood relations(2), Odd men out(3), Arrange in proper order (3 Q eg: Plant, cloth, Yarn, saree, cotton.) Deductions,

For all these topics R.S Agarwal is more than sufficient.

Thats it Folks hope this will help u out.

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