Economics of Power Generation PART 4 ONLINE EE Multiple Choice Questions

Economics of Power Generation PART 4

46. The simple subtraction of kilowatts from total kVA equals the kVAR when the power factor is
(A) unity
(B) 0.707
(C) lagging
(D) zero.Get Answer

Questions 47 to 50 refer to the data given below:

The annual peak load on a 30 MW power station is 25 MW. The power station supplies loads having maximum demands of 10 MW, 8.5 MW, 5 MW and 4.5 MW. The annual load factor is 45%.

47. The average load is
(A) 1025 kW
(B) 1125 kW
(C) 1425 kW
(D) 1625 kW.

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Economics of Power Generation PART 4

48. Total energy supplied in a year is
(A) 9,875,000 kWh
(B) 8345,000 kWh
(C) 7450,000 kWh
(D) 6395,000 kWh.

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49. Diversity factor is
(A) 3.80
(B)1.02
(C) 1.12
(D) 1.22.

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50. Demand factor is
(A) 0.75
(B) 0.83
(C) 0.89
(D) 0.45.

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51. In the figure shown below which curve represents the variation of cost of generation per kWh with the load factor, for a thermal power plant ?

 

(A) curve A
(B) curve B
(C) curve C
(D) curve D.

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Economics of Power Generation PART 4

52. Connected load is
(A) The rating in kw of the installed electrical load of the consumer
(B) the maximum load that a consumer puts on at any time
(C) Part of the load which always remains on at the consumer ends
(D) Average load of the consumer during a specified period.

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53. Which of the following appliance will offer the maximum load ?
(A) Toaster
(B) Refrigerator
(C) Hot plate
(D) Electric iron.

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54. Which of the following industry will consume maximum power per tonne of product ?
(A) Zinc
(B) Aluminium
(C) Alloy steel
(D) Cement.

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Economics of Power Generation PART 4

Questions 55 to 61 refer to the figure given below:

Four different loads connected to a power Plant are shown in the figure.

55. Which load has the least value of average load?
(A) Load A
(B) Load B
(C) Load C
(D) Load D.

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56. Which load has the highest value of average load ?
(A) Load A
(B) Load B
(C) Load C
(D) Load D.

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Economics of Power Generation PART 4

57. Which load has the least load factor ?
(A) Load A
(B) Load B
(C) Load C
(D) Load D.

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58. Which load has the highest load factor ?
(A) Load A
(B) Load B
(C) Load C
(D) Load D.

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59. If all the loads are connected to single source of power, the maximum load on the station will be
(A) 9k / 4
(B) 2k
(C) 3k
(D) 7 / 4k

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60. The maximum load on the station will occur at
(A) 0 hr
(B) 6 hr
(C) 9 hr
(D) 12 hr.

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Economics of Power Generation PART 4

61. In the above case load factor of the station will be
(A)
0.29
(B) 0.31
(C) 0.44
(D) 0.56.

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