The Commission publishes this paper without an answer key, so no answers are shown.
1. SCADA |
2. MNRE . |
4. PGCIL |
5. FACTS
B. Fillin the Blanks |
6. The value of fusing factor is always ——-———-——— than one. |
7. ‘The inertia of two groups of machines which swing together are M, and M,. The |
inertia constant of the system is —————-——.
8. ACSR :
9. SIL means ————————. |
10. When a sinusoidal voltage is applied across RL series circuit having R = Xₗ, the phase angle will be ______.
11. Potential transformers are used for measurement of —-——— by means of low
range voltmeters.
12. Ifa damping factor of a system is zero, then it is called –———-— system,
13. If the system shows two phase cross over frequencies, then the system is conditionally
14. The gain stability of an instrument amplifier is ————-———. ;
15. Ifthe lower level is zero and upper level is 1, then the logic is said to be ———————.
16. A power semiconductor that combines the characteristics of BJT and MOSFET is
[P.T.O.]
18. The condition for series resonance is ————————.
19. A source having internal impedance of (3+ j4)Q is to deliver maximum power to a
resistive load. The load resistance should be ———-———
20. Autotransformer is used to ——————————- and ———- voltage.
C. Choose the correct answer ;
j 21, The area of the hysteresis loop represents |
22. The highest value of thermal conductivity is for 7
|
23. Feeder is designed mainly from the point of view of : j
24. Bulk power transmission over long HVDC lines are preferred an account of
|
25. The critical clearing time of a fault in power system is related to
26. The excessive motor vibration is caused by 3
27. The power rating of an electric drive is measured by considering its losses proportional
to ;
28. ‘The resistivity of a material is
@ * w 2 |
l
29. The power factor at the lower power frequency of a RLC series circuit is
30. A synchronous compensator absorbs inductive reactive power. It is ‘
31. Explain the conditions for parallel operation of alternators.
32. What factors govern selection of motor for a drive?
33. What is the necessity of de choke coil and freewheeling diode in a converter circuit?
34. Define string efficiency and mention the methods to improve string efficiency.
35. Write Mason Gain formulae for signal flow graph. .
36. Explain the factors affected on the resistance of a wire.
37. Using Routh criterion, determine the stability of the system represented by the characteristic equation, s⁴ + 8s³ + 18s² + 16s + 5 = 0. Comment on the location of the roots of characteristic equation.
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