a) Give five desirable characteristics of a tariff. (5 marks)
b) Calculate annual bill of a customer whose maximum demand is 100kw,p.f = 0.8 lagging and a load
factor of 60%.The tariff used is Ksh.75 per Kva of maximum demand plus 15 cts per kWh consumed.
(3 marks)
c) Explain the following methods of tariff;
(i)Block rate
(ii)Two-part tariffs (2 marks)
d) A tariff in force is Ksh.50 per Kva of maximum demand per year plus 10 cts per kWh.A consumer has a maximum demand of 10 Kw with a load factor of 60% and a p.f of 0.8 lag. Show the effect of improving the load factor to 80% with the same maximum demand and p.f on the total cost per kWh. (4 marks)
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