why do we need a 4th wire in 3phase 3wire transmission line6 5851
What are the limiting factor for controlling maximum hot point temperature within a hydrogen and water cooled generator?1 2512
What shall be minimum thickness of firewall in between two transformers and which code specifies it ?1 16105
Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)1 2164
Three phase star connected PT transformer primary side one phase fuse is blown what will be the output in secondary side(Secondary side also three phase star connected)2 5582
what is 'A' Check & 'B' Check ?2 2678
What is single break or Double break related to MCB?2 3692
How to convert KW to KVA or KVAR OR kvar/kva to kw?8 75021
open circuit test when performed on double the voltage & double the freq, then what will happen with p.f and current magnitude?1 1392
What does the term power factor shows?
How to do maintenance of transformer feeder.
Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?
what is High resistance grounding and whatis the criteria for the selection of High resistance grounding
can any one know is sbi interview based on merit or based on roll number
What will be in Mahagenco Trade Test Exam? I want to know the same.
When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?
why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?
How dia computation perfomed in cold rolling mills .
why the NGR (neutral grounding resistor) always OFF during DG off?
how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???
what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?
what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?
Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.