a) Give five desirable characteristics of a tariff.  b) Calculate annual bill of a customer whose maximum demand is100kw,p.f = 0.8 lagging and a loadfactor of 60%.The tariff used is Ksh.75per Kva of maximum demand plus 15 cts per kWh consumed. c) Explain the following methods of tariff; (i)Block rate (ii)Two-part tariffs  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. (

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a) Give five desirable characteristics of a tariff. 
b) Calculate annual bill of a customer whose maximum demand is100kw,p.f = 0.8 lagging and a loadfactor of 60%.The tariff used is Ksh.75per Kva of maximum demand plus 15 cts per kWh consumed.

c) Explain the following methods of tariff;
(i)Block rate
(ii)Two-part tariffs 
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. (

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