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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why a ballast and ignitor is required in MH and other lighting fixtures

Future Group,

2 3918

1.why ACB is not connected in HT side what Happens? 2.how much voltage maintained in ACB breaker? 3.OLTC is connected in primary side in case secondary side connected what happened?

L&T,

3 7510

i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?

 1602

what is the diference between base speed and rated speed in motor

Bhel,

1 4710

what is the generating transformer?

 3 5508

In a panel 2500A ACB is the incoming breaker then what is the size of the bus bar?

 1 5830

What are the types of bus duct?

 1 2247

what are the advantages and disadvantages of oil filled cables over XLPE cables

Areva, AUVA,

3 17990

Which of the following are the important limitations of rod gap surge arresters? 1. They are not capable of selling off power frequency follow up current. 2. After a discharge, the rods are destroyed completely. 3. Performance is affected by climatic conditions. Use the following codes for selecting the correct answer. Codes: (a)1, 2 and 3 (b)1 and 2 (c)2 and 3 (d)1 and 3

1 4709

The speed of a dc motor can be controlled by the variation of 1. armature voltage. 2. field current. 3. armature circuit resistance. 4. angle of brush shift. Which of the statements given above are correct? (a) 1,2 and 3 (b) 2,3 and 4 (c) 1,3 and 4 (d) 1,2 and 4

 1 2868

what is two point starter?

SGF,

1621

what will happen when ac is applied resistor,inductor,capcitor?

 1 3714

how do you measure earth leakages in 3phase wires?

 2 4084

How is Grounding or Earthing achieved in Planes and Automobiles?

ABC,

3 6723

What does CDG,CDAG,CAG,VAJ,VAJH,VTT,VAZ,VAA etc. stands for in case of relays and can anyone answer to decode this codes C,V,D,G,A,X,TT,J,JH etc

HNL,

4 66239

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Un-Answered Questions { Electrical Engineering }

15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help

1100

my question is how to answer the question "you are from b.tech eee background and why do you want to go for banking

875

Define phase cross over?

654

how to test the turn ratio of 3 phase transformer using volt meter shoe the curcit diagram.

1837

Why increase in current leads to increase in conductor temperature?

645




What is Bolted fault?

1673

Why we are using only Dyn11 tranformer in distribution system but not using a Dyn1 in distributing system?why not and advantage and disadvantage in both

2309

one split ac how can told of this ac which Tr tell me us

1528

Define the overload capacity of the motor?

1573

how to know the diffrential relay setting of 06mva step- down (delta-star)transformer?

1517

hi , i have 150 kw loud and we need 50 m cabil,i want to know wich size cabil we use. thanks

1648

1.dg on load alarm/stop alarm... 2.dg on load. piu alarm alarm kaise chek krte hai

1378

What are the special cables required for explosion proof wiring?

2966

In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?

1688

WHAT IS MEANING OF Gg & Gg IN hrc FUSE

2828

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