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How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side
1 3859how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?
1 2276why the undervoltage relay's interlock is used in earthswitch closing operation of the 400kV line scheme?
2 5794now a shunt motor is practically a constant speed motor , then how does it meet the increase or decrease in the load ?
1 3573what will happen to the core losses if we perform the open ckt test on high voltage side of a transformer ?
2 4954What will happen if the interpoles in case of a generator have opposite polarities to that behind it in the direction of rotation ?
1 4425if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.
1 20441.what is difference between line,neutral and earth 2.IF single phase voltage is 230v ac and what should be the voltage between line to neutral,neutral to earth and earth to line
1 6378Post New Electrical Engineering Questions
how was your last weekend.
I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?
please send me the L&T Emb. sys. placement papers and entire details of pattren
what will happen if synchronous machine rotor fed from single phase ac supply
xfhnchncv?
compare between starting charactristics of synchronous motor with those of 3Q Squirrel cage induction motor
Anybody tell me about modbus hex address of l&t trivector meter er300p??I want to read voltage,current,kwh etc via rs485...If anybody have a manual then send on my mail..Brijeshmodi18@gmail.Com
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.
Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha
what is thermal resistance of PVC Cable.
PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com
please send me latest & previous years question papers for IOCL Technical level questions
1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)
Can Anyone Answer anyone of these ? Q1) why direct SOLUTION of Load Flow Studies in Not Possile ? Q2)Why majority of Buses in power system are load buses Q3)Why one of the buses in Power system is taken as reference bus (slack or swing) Bus ? Q4)Bus Admittance Matrix is a sparce (means it contains some zero elements ) matrix , give reason
What current position are you holding in your current company?
