A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now...

A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now increased. It will feed (a) The same power but at a leading power factor (b) The same power but at a lagging power factor (c) More power at unity power factor (d) Less power at unity power factor
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A synchronous generator is feeding power to infinite bus bars at unity power factor. Its excitation is now increased. It will feed The same power but at a lagging power factor 

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If we change the excitation of synchronous machine will it affect on motor speed?

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