A choice is to be made in the following two electric supplies

a) Public supply having a tariff of GH30 per kVA of maximum demand and 8 pesewas per kWh consumed.

b)Private electric supply having a capital cost of GH 0.110⁶ ,cost of fuel burnt 20 pesewas per kWh , cost of repairs and maintenance 1.5 pesewas per kWh , cost of storage 1.3 pesewas per kWh, the annual wages is GHC 117,00 per annum . The annual rate of interest and depreciation is 12 percent.

The maximum demand of a consumer is 1800kVA for a load factor of 33% and power factor of 0.8 .

Use the above information to answer Q45 and Q46

45. Determine the annual bill to be paid to the public supply authority by a consumer.

a) GH387020.16 b) GH 307651.93 c) GH 437651.56 d) GH 567843.76

46. Determine the annual bill to be paid to the private supply authority by a consumer

a) GH972807.00 b) GH 876553.07 c) GH 924376.67 d) GH 885784.56