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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is called star connection and delta connection also purpose of this connections?

Siemens,

3 8867

what is exiter winding,stator winding,avr?how it will work?

Siemens,

1 3624

how to make neutral to ground voltage less than 5v? my house is under the high voltage transmission line so,proper grounding using rod salt n coal doesnt help me..so wat i do as i cant operate my computer ..this high voltage cause great problem to the motherboard i already two times replaced it.in my house voltage is coming near to 25 v between ground and neutral.plz kindly post ur answer to my email id manish77777@gmail.com ..

3 10462

What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)

1383

why we used servo motor insted of inducation motor?

1 3126

what is IP 55 & IP 54 ?

1 4876

why we used servo motor insted of inducation motor?

1 3249

what is mind in cable

BARC,

1415

what is different between IP55,IP54 and IP66?

ABB, Global Industries,

2 54661

which technique servo motor tested o.k or faulty ?

ABB,

1 3591

Please explain me abt PQ diagaram in the power sector.

1691

Pls explain about vfd control?Where it is used, Give some example?

Siemens,

3 5211

what is the design voltage for 6.6KV 2000 KVAR HT capacitor?

1 3250

What is required of exietation to the alternater.

4 5433

what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY

L&T,

1610


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Why generation voltage in thermal power plant is between 11kv to 33kv?

450


What is the difference between isolators and electrical circuit breakers? What is bus-bar?

508


In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

2468


Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

1537


What do you mean by an instrument transformer?

496






(1)The demand for electricity , the amount of renewable generation available, the amount of fossil fuel generation available and the cost of the fossil fuel generation are shown in table below period(hrs) demand(MW) renewable (MW) fossil- fuel(MW) cost of fossil fuel(MW) 00.00 - 01.00 2000 1800 2000 30 01.00 - 02.00 2300 2500 2000 30 02.00 - 03.00 2500 2700 2100 45 03.00 - 04.00 2900 3100 2100 50 04.00 - 05.00 2700 2600 2500 45 05.00 - 06.00 2400 2000 2700 50 06.00 - 07.00 2200 1800 2000 36 07.00 - 08.00 2100 1600 2000 36 Assuming that the renewable generation incurs zero cost, determine an optimal generation schedule(specifying the amount of renewable generation and fossil fuel generation used in each period, the cost for each period and the overall cost for 8 hours.)

1267


ROC converges if poles and zeros lie inside a. Origion b. Z=1

1479


What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

1171


solar energy light efficiency & disadvantages?

1394


Explain thin film resistors and wire-wound resistors

475


What are the advantages of speed control using thyristor?

481


What is the distance between each insulator in 33kv transformer and how can it calculate

1545


what is meant by IGBT how they differ from tyristor ?

1747


What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva

1583


What are the roles and responsibilities of electrical engineer in cement plant

1331