How many types of AC current?8 13085
As we know,charged clouds(from which lightning stroke initiates)may be charged with either +ve charge or -ve charge. Now say one cluster of cloude is fully charged with +ve charge & another cluster is fully charged with -ve charge. In the sky these two cluster of charged clouds have come in such a distance that, if they come clouser by some few yeards then the lightning discharge will take place between these two cluster of clouds. Under such a situation an Aircraft came inbetween. what happend??5 3140
what is the function of NAT & NAC contacts in breaker control switch (TNC)??1 14882
what is the difference betn earthed and unearthed cables which is commanly used why?2 5014
In electrostatic precipitator why positive terminal of tranformer rectifier unit is grounded?2 8586
I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????1 3412
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.996
what is the higest transmission voltage and generated voltage in india14 21588
I want to know the standards for earthing system as per IEC, BIS & IEEE.2 12922
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.1148
what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes
What is the difference between AMF panel and DG Synchronization panel? please define the working of both the panels?3 25994
I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA
How to test Alternator stability test for REF relay
1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?
WHAT IS SITTING AMPS IN OVER-LOAD RELAY FOR 1PH OR 3PH MOTORS?IF ITS NAME PLATE GIVEN MAX AMPS 10AMPS?
physical identification of HT & LT panel
plz explain the auot-reclosing circuit in electrical engineeing
I need model question papers for RRB section engineer Chennai... Please send to my E-mail Id:- firstname.lastname@example.org
CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D
what type of questions are asked and howmwny questions belong this catagory?
How to set a Zone 1 distance relay for distribution feeder?
What is ideal IR values for ground and neutral.
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
Why IR value of the (HT cable Plus synchronous motor) is less while individually having IR values in GΩ?
how to failure indution motor insulation & how to improve heat in motor insulation
How I calculate the ELCB for circuit breakers?