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Electrical Engineering Interview Questions
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i want to know about psu exam eligibility critaria?

ISRO, PSU,

1 7947

What is differance betwwen Conventional MCC & Inteligent MCC?

Quantum, Siemens,

2 5177

where we use 1 phase & 3 phase supply ?what is major advantage using 3 phase over than single phase ?

 3 5091

i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u

 3 8030

What is the operating range of voltage and current in grid supply in India?

BARC,

4 7269

can we produce cosine wave instead of sine wave? will it usefull?

BARC,

4 8869

what could be the RMS value and average value of a 4 phase sine wave?

BARC,

1415

what is the advantage of NiCd battery over Lead acid battery?

BARC,

2 18694

What is the operating range(tolerance) of voltage and frequency of grid supply in india?

BARC,

10 19359

whenever any squirrel or a crow falls on the transformer input line then there is a big explosion and 440 volts of power is being discharged through the neutral line due to which appliances in off mode are also burned.we have earthing for the transformer as well as the bus bar chamber.why is it happening?

 1 2093

Can we use HRC Fuse inplace of Semiconductor fuse?

 1 5310

What should be setting for alarm,tripping and cooling fan on for power transformer's oil temp. and winding temp. indicator?

 1451

While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

 3053

a.)Ammeter and Voltmeter read rms value or avg. value ? b.)What are symmetrical and Unsymmetrical faults?

 2 6048

How we can design a cable for a 3phase load.

 3 6206

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Un-Answered Questions { Electrical Engineering }

one conductor length is L.and i am strech uniformly this conductor and made length is 2L.so resistance of this strech conductor is R=4R..but i want to know about area of stech conductor hows it become a/2..

1677

what transformer we used normally and upto which kva?

1486

low frequency protection why recomend?

1816

please explain to me how to calculate current,voltage,resistance with formula??

971

hi frnds can any one help me ? plz send me placement paper of IOCL of Electrical streem .... plz send ....its urgent....

1289




Explain about retrofitting of machine tool.

1479

Can you explain about Restricited earth fault protection scheme

1402

wow to calculate the transformer rating(KVA)

1674

Usage of flywheel diode in relays

1467

how to calculation increase capacitor,increase power factor for three phase.

1632

what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com

1542

In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?

1521

what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?

2013

how to increase or decrease speed in DC shunt motor by DC convertor

1723

why power factor is important?

8300

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