why lightning arrestor are made by 2 stack of insulator but why cvt are fully 1 stack of insulator.
1 3686How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.
1794what is the working principle of energy saver control panel. please give the complete calculation & theory.
1925For what purpose an AVR in generator sensing generator output voltage?and how the sensing is done by AVR?
3 8136Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.
HAL,
1749Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?
HAL,
5 6324How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?
HAL,
1719Post New Electrical Engineering Questions
Why in ESP Positive earthed
kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased
why we used ZNO in Lightning arrester.
What is Negative Potential Bias
What is conventional thermal current (Ith)
A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.
specify the inbuilt protections in DG
What is the difference between Encoder and Resolver?
why a tester wont shock while testing the power in house
Why does curving the pole faces in a dc machine contributes to a smoother dc output voltage from it?
How can we findout the maximum efficiancy of Transformer? At which load?
how to remover corona effect and hysteresis losses from contactor
i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper
What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?
Can u tell me design of switch yard
