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what is relay what is protection & contact multiplying relays where it is used function in brief
1114What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?
942for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?
1097If 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.
1014If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
1100Draw 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.
926a 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
1487Dear all i want to know SEWA Electrical Supervisor Licence test Previous Year Questions ? If any body know please send to me zohairaukllah@yahoo.com
983Post New Electrical Engineering Questions
what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?
After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.
can we use engine degreaser for electrical motors?
Why the standard of ambient teperature mentioned as 40 degree celcius in machines.
what is meant by vector group of a transformer? How can it be derived?
What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?
According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.
what are problems caused by the pdu in rack server
Name the test signals used in control system
what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value
HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw
what is diff btw electric,magnetic & eletromagnetic field
Explain what is rated speed?
What happens if the series current double?
