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In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.
PPIL,
1757If I have Energy Meter Ratio as 100:5 & Also I have CT Ratio as 50:5 then what will be my multiplying Factor(M.F.)
1970i am completed diploma in ece,and working in ht and lt lines.so is elligible diploma in ece for get electrical C Licence?plse give ur opinion?
1908if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .
BSNL,
1668what is difference between speed mode and torque mode in motor?? explain in simple words please.
1604If more than rated DC voltage appears across trip coil of the breaker, what will happen? e.g. in 110V DC circuit system, if voltage across battery terminal showing 121 V
1659How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?
1 273611kv/433v delta/star distribution transformer primary side full load Ht current is 83.33A in , but input side VCB rating 800A.why?
1669Post New Electrical Engineering Questions
Apparent power is expressed as V * I(Conjugate). Why not in V * I ?
mention hazard experienced during installation
Explain the operation of grid connected central solar inverter ?
What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?
What is accuracy of a measurement?
why use phase displacement in transformer.and effect of phase displacement on transformer
how a flip flop can be used as a latch?
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
In dc ckt. 24v or 110v, which one is more efficient and why?
how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps
Diagram and details of polarity test for Current Transformer 11kv 400/200/100/1A
What is diversity factor in electric installations?
What is the basic rule for block diagram reduction technique?
What is the meaning of C1, C61, C91 cable
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
