what is relay what is protection & contact multiplying relays where it is used function in brief
797What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
667for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
740If an electrical component has a positive temperature coefficient, how come such components have high power losses due to heat if current decreases when resistance increases? assuming power given by I^2*R whereby the Resistance is infinite.
720If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
830Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.
626a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
1132Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
632Post New Electrical Engineering Questions
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
For a stable system, where should the poles of a system be in a root loci plot?
What is the power factor of an alternator at no load?
How can I calculate ISF of current transformer?
I want single line diagram for AMF & DG syncronizing panel
we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards
Readings of ER300P Trivector meter
diff b/w normal grounding and resistance grounding
I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?
Can i replace Earth leakage relay to the faulty Earth Faulty Relay
difrent between vcb acb sf6 and mccb breakers
How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?
What is difference between safe PLC and normal PLC
CBCT selection
Sir, plz tell me how droop setting is done in parellel operation od DG set ? please give practical example ?