wath is skin effect?9 5515
How many earthing pits required for diesel generator set ? Why ?1 5951
what is the fuction of electrical transducer in control pannel?6 3359
whate is aelectrical power fector for exampal8 6359
We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?6 4913
what happen when dc shunt motor field is sudden open in running condition34 49432
How conventional fire alarm system works?1 852
WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?
how to choose the cable rating for load (KW)? EXAMPLE.50KW load14 142153
whats the diff b/w mpcb and mcb?weather it trips on single phasing or not.9 10750
what is different between phase and netural
What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?
what is the Pickup/drop off ratio in BCPU relays
what is meant by directional earth fault and non directional earth fault? describe both.
What is the type of earth fault protection used in battery? explain.
Can XLPE/SWB/PVC (P3) 7C X 2.5mm2 be replaced by Can XLPE/SWB/PVC (P2) 7C X 2.5mm2??? P3 vs P2
WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.
What is the mechanism of WTI
what is PDU in transformer?? which company manufacture??
True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)
what is the difference between an alternator and a synchronous motor
I am going to appear RRB Sr. Section Engineer Exam, Electrical. Can you send me previous year questions of RRB Electrical engineer. specially Section Engineer questions. my email id is firstname.lastname@example.org
how many parameters can integrate with fire alarm basically ?
what is d check in dg 1500kva
Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?