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 Categories >> Engineering >> Electrical Engineering
 
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Question Asked @ Answers Views     Select
model question paper for supervisor trainee bhel   0  247
during parallel operation of two ac generator which condition must match before taking both parallel i.e speed /voltage rating /kva/exciation    2  2843
what is starting current and use of starting current?    3  2553
What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors? hal   0  709
What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner? hal   0  162
What is the reasonable voltage between Neutral & Earth of an electrical system for good earthing? hal   6  2410
what is the difference between UPS & Inverter hal   7  2775
suppose there is afault in transmission line connected to a generating station, then what r the adjustments u will take to without loss of synchronism????? ntpc   2  780
what are the types of cables?    3  980
which oil is used in transformer?    7  1964
gas turbine genrator reactances    0  170
why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?    0  259
A.V.R maintains the voltage of a generator when it is in island mode but when the generator is synchronised with grid it maintenance the P.F,how it happens please any body explain it in detail. tata   2  901
What is the vector group of a transformer,how can it be found out? jindal   0  191
can we use 220 volt 15 w a.c. lamp on 220 volt d.c. tcl   6  1265
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Un-Answered Questions
 
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why Y CONNECTION IS BETTER INTERMS OF EFFICIENCY AND P.F FOR A LAOD LESS THAN 40% AND WHY AFTER DELTA IS BETTER FOR > 40% 157
ho can we calculate the conductor insulation value according to their ratings like voltage,current etc.how insulation value related with voltage,current and power of amachine 183
How to design CT for connected with Transformer OLTC operation? normally CT output design for 1A/5A range but during OLTC Tap position changing time how to function the CT? 475
Difference between shunt, PMG and AREP excitation. Which is the most reliable between PMG and AREP. 2423
can we conduct the swineburne's test on a dc series motor? why? 190
i am completed my degree(B.E EEE) 2014 anychance to get electrical licence plz help me 65
what is W.T?specify the acceptable range? 152
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT?? 156
i want to know that what is the eligibility critaria for ongc exam? 943
in what type of applications v can use q meter? 287
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,? 274
how to calculate the fault in substation 233
how does ELR works? explain 199
HOW TO CALCULATE S/C,O/C,E/F OF ACB. 204
which is the best institute for PLC,SCADA,DCS in hyderabad 421
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