Economics of Power Generation

51. In two part tariff, variation in load factor will affect

1. fixed charges
2. operating or running charges
3. both (a) and (b)
4. either (a) or (b)

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52. In which’of the following power plants the maintenance cost is usually high?

1. Nuclear power plant
2. Hydro-electric power plants
3. Thermal power plants
4. Diesel engine power plants

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53. Incase of _________ fuel transportation is the major problem.

1. diesel power plants
2. nuclear power plants
3. hydro-electric power plants
4. thermal power plants

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54. Large capacity generators are invariably

1. water cooled
2. natural air cooled
3. forced air cooled
4. hydrogen cooled

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55. Load curve helps in deciding

1. total installed capacity of the plant
2. sizes of the generating units
3. operating schedule of generating units
4. all of the above

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56. Load curve is useful in deciding the

1. operating schedule of generating units
2. sizes of generating units
3. total installed capacity of the plant
4. all of the above

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57. Load curve of a power plant has always

1. zero slope
2. positive slope
3. negative slope
4. any combination of (a), (b) and (c)
5. all of the above

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58. Load factor of a power station is defined as

1. maximum demand/average load
2. average load x maximum demand
3. average load/maximum demand
4. (average load x maximum demand)172

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59. Load factor of a power station is generally

1. equal to unity
2. less than unity
3. more than unity
4. equal to zero Diversity factor is always

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60. Load shedding is possible through which of the following?

1. Switching of the loads
2. Frequency reduction
3. Voltage reduction
4. Any of the above

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