Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

do we need NGR panel when the output of the genset is LV but after that it is step up to 22 kv. condition is 12 genset 400v are operating in parallel.

1 5583

132 KV TRFO BUSHING BURNT WHEN A 6.6KV HAS BEEN APPLIED TO IT .WHY .ANY REASON ?

MRF,

2 9084

Why is it that North America uses 60 hz frequency while Europe uses 50 hz?

4 9264

Why ACB is used in LT why not in HT and why VCB is used in HT why not in LT

GE,

1 24475

Name of the relay of low lub oil presuure in DG sets

Lineage, Sterling,

2050

why most of the induction are delta connected?

6 9728

sometimes, eventhough the HV side of the transformer is opened there is a voltage in LV side .How is it possible?

4 7405

how can we calculate that how much capacitor is needed for a system to increase the pf?

5 9217

how will calculate the winding ohmic value in 3phase motors in h.p wise? ex.10 h.p motor winding value ph to ph ? 5 h.p motor any calculation please send me.

Hyundai,

1 6469

what different in delta & star connection in motor?explain

Bhushan Power Steel, Hyundai, KPCL, L&T,

5 14001

why the CT ratio secondary is always divided by 5 for eg( 75/5,80/5,50/5)

6 16570

what is the voltage present in the telephone?

Infosys,

10 13881

why do we connect droop ct{in gensets}in y_phase only

2 8322

HOW DG WORKS ?

3 17007

Does the dg syncronization sucessful in practical.

2 4623

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Un-Answered Questions { Electrical Engineering }

how can we understand that where we have to use ac or dc coil for solenoid valve and why?what is the different between coil of ac and dc explain please.

1980

how can we calculate the ratio of caustic soda and water in lrs.

5845

main difference between ac and dc?

1709

Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

3138

What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

2327

The loads are connected with phase and ground then why current flow as the loads ?

1966

What is meant by harmonic distortion?

1119

Explain different types of d.c motors? Give their applications

1127

how to select the isolation tranformer for siemens 802dsl cnotroller

2068

Why derating factor os applied on Cables?

1956

how do you choose the cable size as per amps rating & the voltage drop for the same.

1783

how to protect motor in dol starter having capacity of 30 hp.40 hp?

3210

how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)

1986

Benifits of 3ph 4 wire metering over 3ph 3 wire

2477

What is the function of a neutral reactor.

1867

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