Power Systems
High capacity generators and motors are of

 delta connected network
 star connected with grounding network
 star connected network
 any of the above

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Power Systems
Per unit of any quantity is defined as

 base value of quantity /actual value of quantity in same units
 base value of quantity /actual value of quantity in different units
 actual value of quantity /base value of quantity in same units
 actual value of quantity /base value of quantity in different units

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