Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what happens if a carbon brush is touching the top end of the commutator

2 3561

Can we use 11kv Trivector Metre or Energy metre instead 33kv Metre at 33kv Over Head Line metering purpose?

Bhel,

5 6595

what is insulation percentage of motor 3 phase and singlephase

Infotech,

1 4482

Hi everyone, I'm Lachuu, recently joined automation company as PLC Engineer. I have certain basic question, I request all big gurus and seniors to answer these question. Because this will be very helpful to me as well starters like me. How to design a control circuit (ex: pick & place - my current project) Yamaha robot PxYx series controller RCX222, using 6 cylinder double acting, plc keyence kv p16r 2 expansion unit for input and output each. How to select panel terminal mcb elcb powersupply. My main concern in some projects how to select dc power supply, mcb rcb(I came across dif bt b c d curves, but stil confusing, pls help me :-(. I would really appreciate all who are going respond to this question.

1482

what is a switchgear. what is its work & where it is used?

5 5603

if i have to use 14 kw what size of power cable can i use and size of earth cable also.

2 5049

why dc moter are not earthed ????

2 6194

can anyone tell me the website for star-delta control diagram?

1 2650

what is the value of current and voltage that our body can resist ?

3 5300

what is corona

3 3787

415v 14kw so can u tell me how i can measure the cable size.then size of the earth also

1 1811

how will be the capacitance generated in a earthed wire???

1 2781

how is the leakage current flow only through guard wire (when guard wire is connected in the circuit)????

2 3371

What is Form factor?

NTPC,

2 4113

how to control dc motor?

1392


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Un-Answered Questions { Electrical Engineering }

What are protections for dty type transformers

1356


how to find number of run cable laying[LT side] for transformer & alternator secondary side? [above condition for getting output power transformer to main panel side] give the example.

1572


how is capacitor bank look like

1900


Sir,In our company there are 3 caterpillar make(capacity:(1) 3.3KV,2.5MW(2)3.3KV,2.5MW & (3)3.3KV,1.9MW) & 1 deutz make (capacity:11KV,3.8MW)gas engines utilised,all are running in paralell. There are three transformer utilised,(1) 6.25MVA,3.3KV/22KV,Impedence voltage:6.7% used for two generator,both are 2.5MW(2)5.5MVA,3.3KV/22KV,Impedence voltage:7.2% used for one generator of 2.5MW & (3) 5.5MVA,11KV/22KV,Impedence voltage:7.8% used for one generator of 2.5MW.all generator breakers capacity of 1250Amps. Sir,I want the details of fault level calculation of generator,transformer individually & for whole system. If you require any information from me.feel free for contact me sir.pl.send the answer of my question as the earliest as possible.

1637


What is the power factor of an alternator at no load?

815






The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

1469


what is 400kv doble circuit quadpole tower?

1446


Merits & Demarits of Oil circuit & Air circuit breakers ?

1577


If we want to change a contactor of faulty one what are the conditions want to fullfil

1515


physical identification of HT & LT panel

1181


why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

1486


in dc shunt motor if field winding is shorted then

1342


Which of the following alternatives will be cheaper (1) A 100 h.p AC, 3-phase motor (2) Four motors of 25 h.p each (3) Five motors of 20 h.p each (4) 10 motors of 10 h.p each explain

2490


How to calculate or formula to calculate rhe power in 2 phase system ??

942


Electrical 'C' license full abbreviation , and full form

1301