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Electrical Engineering Interview Questions

what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?

1310

If we have 15000kw connected load in a factory than how much power demand sanction should be taken from electricity board. Pls provide complete calculation.

5303

why can the rotor of 3 phase slip ring induction motor not be a 2 phase rotor?

1073

X/R ratio in 11kv transmission line is?

RRB,

5122

how to calculate kvar in Akiva

974

what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

1570

why transformer calling in VA rating

4804

Why 30°phase shift occur in star-delta transformer between primary and secondary?

5053

In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?

2307

what is defference by mcb,mccb and mpcb

Bhel,

3803

can anibody tel me on what basis the transformer vector groups are determined????

1357

how does a shunt reactor maintains the bus voltage???

1106

what is creep of energy meter?

HNG,

4067

low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

2022

distribution is maximum done by a)radial b)network c) parallel d)b & c

1035

Un-Answered Questions { Electrical Engineering }

hi every body i am master student in control engineering and my project is slip control in trains i assumed a Dc motore as traction motor but i don't have characteristics of this kind of motor that is used in train. i want from every body if he or she has the characteristics or information about Dc motor that is used in train give me those information or technical characteristics .

617

Why do power lines not short out when they fall into water?

1016

some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

872

at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

880

I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.

1518

EXPLAIN THE WORKING OF SERIES REACTOR IN HT CAPACITOR BANKS (FOR VOLTAGES & CURRENTS)

6628

What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?

914

How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

1216

What is the function of auadag in a cro?

168

what is arc flash and what are the hazards involved

1117

What do you mean by phasors?

165

how to calculate fuse rating for a motor

3925

we have 15 ampere variyac but we want 30 ampere variyac what we do

852

How earthing of switchgear system to be done.

974

If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

983