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Electrical Engineering Interview Questions

The insulation resistance of a cable can be measured by

2875

Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

1027

What's the differs between voltage & current & emf.

CTS, NTPC, TCS,

2617

i want to measure voltage difference between neutral and earth so i just simply use voltmeter. my question is that may i use this measure continuosly.or there are some electricity board restrication on that? or it creat some problem on my measuring device..?

NEEC,

2637

What is differance between alternator and generator?

IOCL,

5793

How the unidirectional torque produced in dc motor

CGL, Sail,

6845

while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?

1962

Why neutral is used in electrical system?

1708

what is the importance of neutral in elctrical system?

5525

How we can measure the thickness of bus bar for a given load ? any farmula Plz elaborate clearly.

5413

working of diesel generator ?

849

Can clean earth cable be considered as low current cable

1076

how encoder works?

1694

why we don't use air circuit breaker on H T line in place of vacuum circuit breaker ?

4309

IT IS SAID THAT THE OLTC OPERATION SHOULD NOT BE PERFORMED WHEN THE TRANSFORMER IS GENERATION TRANSFOREMR/STEP UP MODE. WHY IS IT SO?

2368

Un-Answered Questions { Electrical Engineering }

Why AC & DC capacitor are use in UPS ??????????????????

1114

in parallel operation of power transformer why the distance between power transformer and capacitor bank feeder is necessary to know

907

Can we use shunt trip coil instead of trip coil with protection relay for protection?

829

In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc

954

what is mean by transition resistance of transformer?

3249

sir iam from electrical and electronics branch ,can i appear for the hpcl offline requirtment? if yes please mail me on vikram_raju25@yahoo.co.in

1113

what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.

1187

What is an order of a system.

206

Hello to all, Please someone can send me HPCL ELECTRICAL Engg. Sample papers to me? Its urjent....my email address is.... raviasiapacific@gmail.com

1195

11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??

743

State any two nuclear power stations in India, with their generating capacity.

952

What is meant by reactance voltage?

145

What are marginally stable systems?

152

A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.

1235

Tell me in detail about c.t. And p.t. ?

217