| Other Electrical Engineering Interview Questions |
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|When we change the tap position of 10MVA transformer it
suddenly tripped with Out of step indication and also with
Static differential relay indication, Transformer Bucholz
relay indn and Low oil level indication. Before 1 week the
same problem occured by changing the tap position. but at
that time only oltc bucholz relay activated. After testing
the TxR Relay team & PET team cant find any solid reason.
The values are ok also. So plz answer wat's the reason for
this incident? anybody plz help.
|what is difference between megger & Contact resistance
meter & its Application?
|What is the RMS Value. Please discribe in detail
|what is S.D.F stands for ? (S.D.F unit 80 amp , TPN )
|What is the difference between Off line UPS and Line
|1. what is exciting winding, rotor winding, startor
winding. and how it works? in ac generator
|in GEAFOL Cast-Resin trnaformer of 11/.72kv which has
tapping of 11550v,11250,11000,10246v in primary side. To
obtain 700v. which tapping should be used of HV side as we
have 11000v/720v tapping now .
|what does the transformer connection symbol YNaod1 mean ?
|what is the formula to find battery back up of ups?
|how to find out speed of single phase motor
|Why we use Carbon & graphite mixxed brushes in the DC motor?
|why d.c. supply is given to the primary side of generator?
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