Explain cos(theta) and Sin(theta)

1108

what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.

1311

What do you mean by lighting transformer?

160

'documenˁ

1030

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

1310

What are the two segments of nyquist contour.

162

what things to be considered when designing UPS

795

why zero sequence impedance measurement is not applicable for single phase GT

1182

at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.

715

If a high resistance fault occurs,then what are the changes will happen in the system?

467

what is the safe meggar values for motor, transformer HT, LT and Cables? IF we want to replace I/C bay at our 220 kv substation which is of 140 mw load capacity bay to be replaced by 400 mw capacity bay.other than CT(1200/1) what are the other equipment i have to replace. why we generally use 3.5 core cable or in other word 1/2 core for neutral and also confirm me that in balance conditiob(3 phase)current in neutral will zero

1317

would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

1487

what is the earth current,reverse power,electrical trip generator short circuit,low voltage, high voltage please discribe me

1161

dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish

1393

if we give 60 hz single phase supply to the transformer used in europe , than what will happen

1063