What is the role of the 50 STUB protection at a GIS 400KV substation with SIEMENS protection relays?
1472In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.
1120We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?
1083Two electric lamps 40 W, 220 V each are connected in series across 220 V. What is the power consumed by the connection?
963CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor
1192I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting
1029What is the difference between security constraint unit commitment and security constraint optimal power flow?
1205Post New Electrical Engineering Questions
When we giving the 3 phase supply to ups system how to coming netural?
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss
There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.
What do you mean by transformation ratio of instrument transformer?
what is control supply rating of a machine
some basic standard questions on transformer.
how to conduct dc resistance test for rotor of an alternator and how to measure the rotor dc resistance value theoritically?
What happened ,If 3 phase clearance not maintained in 33KV Line,11KV LIne etc?
State and define ohm’s law?
What is corkscrew rule?
How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.
which protection function should measure RMS value of current&DFT value of current?
how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer
how you will decide the distance between the power transformer and its fencing
