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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is mean by Digital Logic Meter (DLM)

 1854

Can we pass 11kv power in 1.1kV voltage grade cable.If not why?.

 3 9791

Is only insulation the difference between High voltage and Medium voltage cable?

 1 3000

if the supply frequency increases what happens to the motor load

 2 4932

in a diesel generator is there any relation between AVR to fule system?

 2 3509

how the diesel generator maintain the rpm when the generator loaded varies from 10% to 70% immediately?

 3 4935

The MCB circuit breaker have a voltage rating of 440VAC it's possible to supply a voltage of 480Vac

 1 2946

what is the function of AVR in generator? how the generator maintain the frequency while varies the load?

 1 2861

im working in one private compeny in gujarat. i was complet diploma electric in 2010 from gujarat technical board. now i want electric supervisor licence in gujarat but i dont't know when i apply? plz give me address of the licence dippartment office in gujarat. gandhinagar

 1402

WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM

 1537

why the capacity of power plant is given in MW though the generators are rated in MVA?

TATA,

3 5379

What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design

 2855

how to interlock 3 nos MCCBs using under voltage coil. please provide me circuit diagram?

Honeywell,

2147

how to find transformation ratio of squirrel cage induction motor

BITM, WER,

2697

what is the difference between ac and dc?

 1 3473

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Un-Answered Questions { Electrical Engineering }

What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

3077

What do you mean by power transformer?

639

are there rmu for 3 transformer?

1414

What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

1571

what is the constructional difference between a power transformer and potentian transformer?

1250




What is I to C?

1625

what is effect of length of air gap on performance of dc motor and generator?

1327

HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

1445

What kinds of decision are made about CT from it's Knee point(voltage & current)?

3790

please send me privious exam's queation papers of section engineer(electrical).

1590

if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1440

What is the formula to find out two phase active & reactive power

1689

what reactive how to maintain

1385

Explain what is rated speed?

666

Why CBCT rating is 50/1A

2316

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