Electrical Engineering Interview Questions

Difference between a pilot wire and a normal conductor?

1632

How to reduce current flowing in neutral due to unbalanced load conditions in a three phase system.

3578

Why current transformer is earthed??

4131

why when i start my diesel generator it takes 1 minute or less then stop, and i checked the oil sensor is ok and when the generator start i can get 220 voltage but it it is stop after 1 minute or less, how can i solve this problem?

1986

what is compatible kva for 3300 watts and why

2577

What is the value of system voltage?

Bhel,

4119

What is difference between MCC,PMCC,PDB?

Cipla, JSW,

36090

(1) From the following option, which option is correct for largest size transformer.? a)1KVA,25Hz , b)1KVA,50HZ , c)1KVA,60Hz , d)1KVA,100Hz

7302

Why ct secondary is not kept open while primary charged. Answer in terms of ct parameters.

5292

What type of surgery impedence with 200ohs

1690

suppose i have two single and three phase induction motor,thier have not any rating on its panel,anybody can tell me which motor is single or three phase?

Doon,

2589

why chock were used in old tubelights but are not newest tubelights?

1517

Differnce between negative Pahse SequenceFunction and unbalance Function?

1349

What is the name and type of power transformer oil?

4411

what is the full name of ELCB &MDB 4003

Un-Answered Questions { Electrical Engineering }

what is meant by skew width in machines?

1693

how much UPS neutral erath leakage current.

3182

How Self works in DG set

1454

1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

1467

Can 33kva/415v transformer be run underground? If the answer is yes why and if the answer is no why?

1224

what is the difference between 2 way and 4 pole selector switch???

1912

what is earth resistance? how to measured? and give values at power station and mcc area?

1556

In aerodynamic turbines which element is NOT there a.stator b.compressor c. Fuel intake system d.fans

1685

what causes contact chatter when there is no demand on the air conditioning unit?

1654

What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

1325

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

1801

what is acceptance test in electrical engineering.

1745

What is the magnetic field (coil DC ) of Turbo Expander?

1627

how maney type tempereture measurement ?

1880

what's the difference between abs/inc encoders. apart from the position remembrance what are all the other differences. and what's mean by grey code.

1613