| Other Electrical Engineering Interview Questions |
|| Asked @
|what is the working principle of soft-starter & how it
diff. from VFD ?????????
|Do you know how to joint the H.T and L.T Cables?
|What is the secondry voltage of 420kV Current Transformer ,
the rated current is 2600A
|How to select the rating of a CT used for REF protection.
The rating can be of equal rating of Phase current or
neutral current rating
|which relay is used for both detection & correction?(there
is only one relay)
|what is the name of oil used in transformer
|WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder
in LV substation panel.It is supplying to a lighting & power
socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8
times of Ir , tsd = 0.5 sec( I2 t off).
Sometimes this MCCB is tripping .But no trip in DB MCB.
Can anybody tell me reason ?
From where i can know about the MCCB settings?
|star delta starter single line digram
|Is there any calculation to find unknwon(unferroled) phases R Y B in alternator,3 phase motor anybody shoot my problem.
how can we notice this is the respective phase?
|how will be the capacitance generated in a earthed wire???
|Where all & Why resistance grounding is required?
|why current flows from +ve to -ve terminal
|For more Electrical Engineering Interview Questions Click Here |