1. what is the power factor of a purely inductive load?
2. Which type of transformer connection is preferred in
case of power supply transformers?
3. In power transformer usually which winding is closer to
the core?
4. what will happen to the generated emf if the no. of
poles of an alternator is increased?
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Answer Posted / lakshmi
power factor is zero because angle between voltage and
current is 90 so cos(90)=0 so therfore reactive power is zero
2.power transformers are preffered
3.low tension winding is preffered because smal insultion is
required.
4.as poles increase speed decrease inturn generated emf also
decreases
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