Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Does dry and oil transformers both require dedicated neutral, because in my project we are using 2500kv dry star delta transformer, where they say neutral not required and even it is not provided in our substation. can u let me know

Voltas,

2 3167

Why neutral shows voltage with earth ?

MRF,

2 3695

Can we see the poles in the motor?. if yes then how can we see plz tel me

MRF,

2 3901

What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?

Hira Group,

1307

What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

Hira Group,

1231

Can we use MCCB with Auxiliary Contact in place of Contactor in a AMF System.

C&S, Farnek,

1 2930

Whatis the current capacity of 33KV/ 0.433KV transformer on Primary and secondary side/

1 2677

What is the significance of %Z in case of transformer?

1 2411

WHAT IS MEANING OF Gg & Gg IN hrc FUSE

2808

what is ring main unit?

Otis,

1 2872

how is find out kwh step by step

Voith,

1300

What is the difference between indoor and outdoor transformer

Ama Airfield Lighting System,

5175

how to find the transformer neutral copper earthing sizeĀ 

1 1889

if a 2 ohm resistor,2 ohm capacitor and a 2 ohm inductor is connected parallely to 12v source.Then what is the value of current in each branch.Is current flows in each branch at the same time?If not so then provide the proper sequence

Tata Steel Limited,

1 2310

According to ohms law voltage proportional to current, then why should current rating is low with high voltage rating in transformer?

KEC,

5 6088


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Un-Answered Questions { Electrical Engineering }

how to modify DOL control panel into Delta Y connection?

1460


Where can I get Iidian straderd specifications for electrical items or works in web? please help me.

1557


Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.

1878


how does high earth to neutral voltage affect electronic equipment?

908


What is inverse definite minimum time lag relay? Where is it use?

2260






What is the simplest formula to calculate the rotor diameter of a synchronous generator?

1887


What types of high speed CMOS circuits have you designed?

1608


any one guide me to reduce the power factor of diesel Generator from 0.97 Leg to 0.8 Leg.with out any change in my load.

1180


if we install two earth pits with a clear space of 5m without any interconnection,by checking the digital multimeter will it show continuity between earth pits? If so what would be the approx. value

1448


I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1237


why -48 volts dc used in telecommucation

1955


What are the main advantages of generalized error co-efficients?

619


all details of DG UPS HVAC

1502


what are the sample questions asking to the test cunducting for electrical superwising lisence test?

1630


Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

1390