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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What Should be the value of Vector Surge angle at Tripping and how to calculate it?

2016

can any one tell in easy method for circulating current ??

Quest,

2074

delta motor winding resistance I take normally single winding is 2.5, which value is came delta connection ie RY ?

1950

how withstand of hi-pot test outputs of transformer wire 2.5mm

1917

what is the role of frequency in electrical system

Hindalco,

2 7559

what is function of reactor coil in Power factor correction panel

1 4104

what is stepping motor and where can use in electrical installation.

3 4972

What is spill current in protection relays?

1 3890

If the load is 10Kw and power factor has to improve from 0.5 to 0.8,how can we select the capacitor rating accordingly.Illustrate by showing formula?

9 12048

If the capacity of water Tank is 50000 Liters situated at 20 meters height from ground level,What would be the size of pipe and how much USGPH water will be supplied and what will be the motor or pump rating used for this work?Illustrate by showing formula?

1 3893

one hp 3phase motor what generate power factor

1 4061

i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test

1744

hi i have a 400kva transformer i want to know the test i can use to check on it thx

1 4207

what r the tests on the 3 phase transformers can any one explain how to test using megger on transformers thx

2 5366

In Transformer testing at Shop test we normally test for vector group, open ckt.,short ckt. but what are the other test performed for transformer once it reaches at site.For e.g:if the transformer is dry having rating 1000KVA?

2 4259

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Un-Answered Questions { Electrical Engineering }

how to decide the panel size like MDB ,SMDB PANEL SIZES

7298

WHaT IS THE CONCEPT OF INDUCTION LAMPS IN MODERN LIGHTINGS, and HOW IT WORKS TO EMIT LIGHT ( AS NO ELECTRODES ARE PRESENT ) ?" COULD INDUCTION LAMPS CAUSE INTERFERENCE WITH COMUNICATIONS INTO A STORE USING INDUCTION LIGHTING ? WHAT IS THE BENEFIT OF USING THE LOW FREQENCY INDUCTION LAMP , VERSUS LED , AND VERSUS FLUORESCENT, AND VERSUS ANOTHER KIND OF LIGHTING . THANK yOU MOISES GUINDI

2035

area control error

1692

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

2205

what is the effect of power factor of machines in starting current

2009

which pump used in STP

2164

Please give me a erda placement paper

1749

What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer?

1966

What is Plank's Law?

1103

how to revers the direction of single phase motor

916

Can you tell me more about pu systems (per unit systems )calculation in large power systems? how to get the base for voltage and power in generator, transformator and transmission lines?

2238

what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

1602

Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.

1773

Define newton's law of viscosity.

1142

what will happen if frequency is below 50 hz?

1962

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