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When excitation is increased (over excitation), the synchronous generator operates at?

1.   leading power factor

2.   unity power factor

3.   lagging power factor

4.   any of the above

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Question added by Aneesh Shandilya , Manager/ Lead Electrical , Orpic
Date Posted: 2017/06/04
Muhammad Usman
by Muhammad Usman , Assistant Manager Operations , Lahore Electric Supply Company

Synchronous generator will operate at lagging power factor.

Mahmoud Ibrahem
by Mahmoud Ibrahem , Technical Office Engineer , Tiba integrated for construction

operates at lagging power factor

dheeraj v c
by dheeraj v c , electrical protection engineer , erl

Ans.3 because for a given fixed out put load, an increse in excitation of the generator will result in increased lagging pf.

Sattar Abdulkarim  Mohamed
by Sattar Abdulkarim Mohamed , Country Sales Director , Ideal Technical Solutions

When the excitation feeding to Generator is increased more than normal leve to be over excitation. Then Synchronous Generator operates at Lagging Power Factor.

Aejaz Maqbool
by Aejaz Maqbool , [Applications & Technical Engineer] , INDUSTRIAL SYSTEMS GROUP (ABDUL KAREEM HOLDING

If excitation is increased, E cosδ > V, the generator delivers reactive power to the load and operates at lagging power factor.

manzoor ummar
by manzoor ummar , Electrical Engineer , Tata Consulting Engineers

Over excited syn. generator operates at Lagging power factor

SANJAY V SANJU
by SANJAY V SANJU , ELECTRICAL ENGINEER , KERALA STATE ELECTRICITY BOARD LIMITED

operates in lagging power factor

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