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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is maximum or Threshold value of current 7 voltage that a common man can withstand

 1 2041

how to prepare PPM schudule

TATA,

3 4654

what does the regenerative braking mean?and how it used for Dc motor? thanks.

 2 5668

would the same effect be achieved by reversing the connection to one winding of the induction motor 3-phase?

 1331

Describe the control mechanism of missile launcher???

DRDO, ONGC,

1516

If ac 230volts inputsupply to full wave rectifire what is D C output voltage.

 3 4491

we can stepdown the voltage from 230/12v ,and we use the voltage for various electronics components why can't we step up the voltage from 12/230v if we can shall we use the voltage for domestic single phase supply

Areva,

5 7405

A 11000/415V distribution transformer is fed 415V upon it's LT side,Do I get 11000V upon it's Primary side ?

 7 12333

For having nonavailablity of 10 Amps fuse, a lineman replace the same with 5Amps two strand, Do he correct ?

 4 5316

What is the difference between Analogue Addressable Systems and intelligent Addressable Systems

 1 5066

at the time of starting back emf of a motor is zero.so how can it will start to run??

 1 3108

why we have to do tan delta test of the transformer oil???

 5 16548

How to choose primany and secondary side MCB

 1 2298

why firewall is build up between two transformer (220/11kv,50MVA)?what should be the firewall height?what is the clearance between firewall and transformer?

Siemens, Tous Stadt,

2 16567

In a Synchronous generator, Can AC voltage be used instead of DC voltage in field winding of rotor to produce AC power?

NTPC, Windia,

10 16618

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Un-Answered Questions { Electrical Engineering }

for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

990

What is the important precuations need tocarried out while working with Electrolite in Battery PM?

1479

What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

1855

What is mean by spike arrester(Voltage Operated)

1608

How to Make relay co ordination chart for a Electrical power distribution of a plant

3281




What is cathode ray oscilloscope (cro)?

678

I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

1447

at what basis/standard we have to arrive the current density of aluminium/ copper in busbar?

1660

what about SAP/MRP regarding manufacturing of electric motors and all drives?

1584

what is the soft starter principle? how is connection diagram? what is the procedure for checking the connection?

1713

How to do fabrication , busbar and wiring cost for : 1. LT Panels 2. C& R Panel

1445

What happens if i apply 500V to 440V rotary Switch ?

1391

What is speed mode?

1251

How can we calculate the transformer rating if the load calculated is 1000KW (11Kv Supply)?

654

What is lifting power for 1 wb/m2 and 1 A magnet?

1691

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