what is the operating principle of contactor(power).along with disection?3 14375
in india why we not use frequency above 50 hz for distrubuting power ?1 3434
howmany types of compresor is there? and how to calculate compresor capacity?3 3739
flush point of transformer?2 3026
how can alculate the apfc panel rating?3 12539
why are using bus ducts ? why not using cables12 39559
How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.974
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?1013
WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.1065
why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.4 5852
Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.2 3149
Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used
What is the function of probe in cro?
In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?
What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer
what is negative d.c. voltage, why this voltage is used in base transciever station.
Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?
how to select energy meter? have any calculation?
Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.
Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?
3- What is the target from Zero Impedance, Single Phase Imp., S/C Imp. and magnetic balance tests?
How to check the Bushings of the transformer?
Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... firstname.lastname@example.org
i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice
I need HT sphere gap calibration table. Can any body help me.
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.