| Other Electrical Engineering Interview Questions |
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| Question |
Asked @ |
Answers |
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| We have one 500KVA transformer. We have tested REF relay
and commissioned. After one and half year, due to some
ground fault in one of the DB circuit Transformer tripped
by REF relay. What will be cause and remedy. Please advise? |
| 1 |
| why transformer is rated in kva? |
| 2 |
| what is the ideal earth resistance |
Enercon | 11 |
| What are the effects to a distribution transformer rated
10Kv with ratio 10Kv/0.433Kv, 3phase 50hz for example but
fed with power supply of 11Kv? |
| 2 |
| We are having Chemical earthing pit
the voltage between neutral to earth showing 22V how to
solve that |
| 4 |
| What are the various types of LT panels? Name them. |
Tyco | 2 |
| We operate a 10 Mw facility and we have been experiencing
several trips due to fluctuations on the MVAR? We have
checked all issues related to the AVR and we have found all
OK? Can anyone help us? The grid voltage, internal voltage,
all regular parameters look ok. MVAR fluctuate and there it
goes the unit? What could be happening? Thanks! |
| 4 |
| why HT line voltage is multiple of 11.eg11kva,33kva,132kva |
HP | 2 |
| why is the core of the underground cable is spiral in shape
instead of straight? |
Mecon | 8 |
| what is the working principle of electrical motors? |
| 4 |
| what happend when 230v dc motor we supplied a 23v ac supply |
RRB | 3 |
| without name plate detail of blower how we can find out the
HP & Rpm ? the input voltage is 230v single phase |
| 1 |
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