Power System-I

1.Where the major heat loss in a steam power station?

2. What is the thermal efficiency of a steam power station?

3. Where the cooling towers are used?                                                                                                   

4. What is the running cost of medium power station?

5. For what heads Francis and Kaplan turbines are used?

6. In which plant minimum quantity of fuel is required?

7. The distribution transformer links between what distributions systems?

8. A distributor is designed from which considerations?

9. In a balanced 3-wire d.c.system, the potential of neutral is at where that of outers.

10. In a 3-phase, 3-wire a.c.system, if the loads are balanced, what is the current in the neutral wire?

11. The 3-phase, 3-wire a.c. System of distribution is used for what loads?

12. Which system is used for combined power and lighting load?

13. What changes the characteristic of electric supply?

14. Pole-mounted sub-stations are used for which distribution?

15. Fault location is easier in which sub-station?

16. The lagging power factor is due to what power drawn by the circuit?

17. What are the voltage variations in a brown-boveri regulator?

18. at where a synchronous condenser is generally installed?

19. What is Depreciation?

20. What are the three parts that the cost of electrical energy can be divided?

21. The running cost is directly proportional to what?

22. The flat rate for power load is generally lower than which load?

23. In block rate tariff, the rate of energy in first one or two block is high because fixed charges are merged into which charges.

24. For which consumers the block rate tariff is mostly applicable?

25. Why a big consumer is charged at a lower rate than a small consumer?

26. What is the purpose of Economiser?

27. The running cost of a nuclear power plant is about?

28. India’s first nuclear power plant was built at where?      

29. The first nuclear power plant in the world was commissioned at where?

30. Which is more efficient, Gas turbine power plant or steam power plant?

31. Draft tube is used in which turbines?

32. How the booster is connected with the feeder?

33. The interconnected system increases which capacity of the systems?

34. The chances of faults in underground system are less as compared to what?

35. 3-phase, 4-wire a.c. System of distribution is used for which load?

36. What is the area of x-section of neutral when compared to line conductors?

37. Which a.c. System is employed for purely domestic loads?

38. In which sub-station the possibility of fault escalation is less?

39. Outdoor sub-station requires more or less space?

40. Underground sub-stations are generally located at where?

41. The excitation control method is suitable for which lines?

42. If smaller the lagging reactive power drawn by a circuit, what about its power factor?

43. In which power we can get the maximum value of power factor?

44. for the same maximum demand, if load factor is decreased, what about the cost of energy?

45. If the load factor increases, what about the Average load?

46. The annual running cost consists of what?

47. If consumption is more, what about the fixed charges?

48. What is the ideal tariff for any type of consumer?

49. The maximum kava demand of the consumer is inversely proportional what?

50. If a consumer whose load conditions do not deviate from ideal one what about the charges?