Power Systems
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by

 Zs = 0.7 pu, Zm =0.2 pu
 Zs = 0.5 pu, Zm =0.6 pu
 Zs = 0.6 pu, Zm =0.5 pu
 Zs = 0.2 pu, Zm =0.7 pu

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Power Systems
In order to have lower cost of power generaion

 the load factor should be low but diversity factor should be high
 The load factor and diversity factor should be high
 the load factor and diversity factor should be low
 the load factor should be high but diversity factor should be low

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