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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

1664

explain the functions of main isolation switches

Zesa,

1626

please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

Al Rasikh,

1788

The synchronous machine excitation system explain

1757

Any formula to calculate neutral current in 3 phase 4 wire system

1 2867

What are IP protections used for electrical panels, JB, equipments installed in explosive zones like Petrochemicals, Oil & gas

1 3000

In my 3 phase 4 wire electrical system N to earth voltage is 0.08 is it ok What is standard for it ?

Kay Bee,

1 2172

What are the difference between normal application Transformer and Solar application Transformer?

1624

how to handle 2500 kva transformar

1590

why are transformer rating in MVA

Suzlon,

2 3748

a starter used for squirrel cage induction motor?

1652

Instrument connected to a single phase supply

Alstom,

1660

What is the safe limit of voltage between earth and neutral in india.

Incepta Pharmaceuticals,

2 4039

Power systems

LB Engineering,

1682

What is the possible cause for failure of lightning arrestors in outdoor substation under normal condition

1731


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

If VFD is On but no starting commond on it. so how many outpout voltages of VFD

1119


oltc of a transformer, how it works? and what are the equipment consist of describe briefly?

1990


i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

1979


Single line diagrams for star to delta and DOL starters.

2218


lenz law application and define

2787


Which motor is 3.3 or 11kV more reliable, in terms of efficeancy,maintenance, reliability.

2070


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

8215


What is the difference between cylindrical-type and sandwich-type winding?

1422


Leakage current,un balance current which relay using for high voltage transmission?

2127


Give atleast 20 alternating current apparatus and devices.

1738


There are a trformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

1079


LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

2115


If any cable burnt how can we identify it burnt by high current of high voltage? 

2407


pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..

2013


How are load losses and no-load losses measured at site in a DG set?

1714