Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to select cable size according to ampere.

1 433

What is the meaning of C1, C61, C91 cable

559

How REF protects transformer alone? explain with diagram.

283




What Is Connection APFC Panel In Compony.

186

How Calculet The UPS AH In Load

325

how calculate kva in to kw

368

how does directional relay work incase of ac ?

229

How many types of Transformer testing..

1 343




If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.

387

What is the practical way to calculate the cable size for known ampere load?

227

How to test Alternator stability test for REF relay

Amprotec,

228

Testing procedure of DG alternator stability test

Amprotec,

227

how is the connection of a 3 phase ct trivector meter done on a pole mounted transformer

197

what is the function of closing coil in air circuit breaker?

Fresher,

194

sir pls tell me . our ct specifications are 120/5 ,2 core , 0.2 and 5p10 class , 30va and 30va buden. insted of 30 va i want use 15 va. can i use?

196


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Un-Answered Questions { Electrical Engineering }

what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

1550


Pls Breifly explain about UPS (Inverter,Reserve,Rectifier,Float voltage,Boost voltage).

1606


Explain and give examples about VCB?

2052


Which types of gate insttaled in static switch. Please give me answer.

433


how to carried out DAR test in 11 KV Alternator ?

1068






what type of earthing do for dry fissure rock?

1305


What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.

1219


We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.

526


how  do you choose the cable size as per amps rating & the voltage drop for the same.

676


What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

1171


My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

204


What is CCM in Electrical ? where can we use this material?

187


what is tri state logic gate

818


what is the difference between torque induced and torque load?compare them with respect to dc motor?

715


what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.

930