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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

sir can you operated Transformer on frequency from that for which is design?

Kirloskar,

1 4217

sir what is the minimun earth resistance value of an industial bit and grid bit ? and Why?

Kirloskar,

1 5286

what is difference between power & distrubution transformer ?

3 6829

how did the differential relay work to protect the power transformer

4 11126

why do we have 230v a.c. as general voltage for domestic supply rather than others?

2 6434

In transmission line the line power loss only accured at resistance the inductance and capacitance wont consume power is it correct?

2 4600

What are the types of AMF(auto main failure) panel.

1 4313

sir, Is their any measuring unit of knoking? please explian?

Kirloskar,

1888

sir, why alternator output is connected to delta side in to generating transformer? any reasion?

Kirloskar,

3 7531

sir, Two different rating of generator going to connect parallel, can it set same DROOP or different. Why? Please explain

Kirloskar,

2 7064

Sir, why generating power plant operating at above 0.9 lag? detail explaination?

Kirloskar, L&T,

1 5586

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

1921

why grid frequency varry time to time?

2 5210

whats the reletion betweet flow,pressure,head,rpm and motor rating?

1 5040

whatis the test procedure for lightning arrester which was installed one year back. i want check it whether it is working or not.

1 4240

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Un-Answered Questions { Electrical Engineering }

What is an ac motor?

1277

Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

4324

how we explain parallel paths armature winding?

1959

design a LV scheme for a 15 storied building?

1949

What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

1125

what is the advantages og idmt relay over magnetic relay??

4246

my b-tech percentage is 50%. what answer will satisfy the hr ?

2108

What is pd controller?

1112

Why the moulded plug comes with domestic appliances instead of assembled plug like anchor, Vinay 5/15 A.

2032

Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

2028

how generator avr give to the input?

1999

what are the assumptions made in swineburne's test?

2173

In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.

3323

If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive

1796

What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

2095

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