| Other Electrical Engineering Interview Questions |
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| Question | Asked @ | Answers |
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| In CDG type IDMTL realy O/L , E/F, O/C which are used for
out going feedrs,on R-phase o/c element, Y-phase , e/f
elecment and on b -phase o/c element will be connected .
Why the earth fault on center phase only, why not on other
two phases? | | 2 |
| what is the application of dynamic Breaking resistor in
inverter ? & How it works ? | | 2 |
| A three phase transformer 460v primary 220v secondary
(three phase four wire system.) Why did we get 460 volts
across the neutral on the secondary side? | | 2 |
| motor and transformer working with same principle so why
motor rotor was roted and transformer not roted | Suzlon | 7 |
| what is the relationship between horse power and watts | | 5 |
| Basic philosophy of applying 3P tripping for uptill 132KV
switchyards & for 132KV & above 1P/3P tripping is used. | L&T | 1 |
| why lightning arrester and other equipment earthing
conneting from same earth bar ? | | 1 |
| explain LED lamps? | | 1 |
| tell how current tranfomer works | | 1 |
| what type of relays used in transformers? | APTransco | 18 |
| Ferranti Effect says that voltage at the receiving end is
higher than that at the sending end. How is it possible? | | 3 |
| if AVR fails in D.G set, what will be the effect? | | 4 |
| what is automatic voltage regulator and it is used? | TCS | 19 |
| why in three phase 440 circuit in all phase current is
almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i
check with clamp meter it shows 25 A? | OPS | 2 |
| what is the diffrence between star and delta connection ?
when we use each one ?what is the best ? | | 4 |
| ward lconard control | Bhel | 4 |
| why transformer does not obey ohm law? | | 13 |
| How power factor of electric system improved? | Nalco | 3 |
| the voltage per turn of a primary winding of a transformer
is the same as the voltage per turn of the secondary
winding of the transformer. why? | | 3 |
| i have a Connected Load of 280KW and Maximum Demand of
224KW to one of SMDB under design with me.
which criteria should i consider to design panel and main
cables connected Load or Maximum Demand
1)Breaker rating
2)Panel Busbar rating
2)Incommer cable sizing (ignore Voltage drop)
| | 1 |
| |
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