Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is EMC filter in VVVF Drive ?

Bengal Energy,

2165

what is proper capacitor placement? How to evaluate capacitor size?

CPCL,

1683

why D.C excitation is given to sunchronous motor?

6 8341

What is mean by hormonics?

5 6644

What is mean by power factor?

Shreem Electric Ltd,

18 23987

WHY IN AC DRIVES,INPUT PHASE CURRENT SHOW UNBALANCE?

Adhunik,

1761

Can we inject more current in ct primary paralleling 2 loading transformers/Injection kit at a time?let ct ratio be (5000/1A)(per kit rating 2000A range),i need to inject 5000A,if this cant b done means wat is d optional?

1 3827

Can HT cable(11kv cable) be used for 415V, 700A requirement.

5 11893

What are the different parts of Alternator and how it works?

1 3864

What are the functions of different Parts of Alternator?

2 20600

How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...

ABB,

1530

How Much Capacity of Diesel Genset is suitable for 20 no.s of 1.5ton AC's & Why?(Load Calculation)

Lapis Technologies,

11 33372

how we can select MCB ratings according to Voltages, Curves.

2 12647

how to calculate the powerfactor in induction motor having name plate details? for example 1 h.p motor 1.86 A 415 V

6 19292

Why HT cable have only 3 core ?

Jindal, McDermott,

10 26889


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Un-Answered Questions { Electrical Engineering }

What do you mean by cogeneration? What its working principle?

2799


WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?

1538


How Can You Relate Power Engineering With Electrical Engineering?

778


How to convert a two phase power into a three phase power in induction machine?

1384


in star-delta tranformer,if the input of star connection is 400/7v 3 kva then what is the output of delta connection?

1750






how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1443


what is the importance of Partial Dischage test for Electrical Equipments

1496


A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

2070


What are two contours of nichols chart?

659


can u describe the method used for protection of transmission line.

1658


how does an encoder work???

2086


Earth has zero potential then what would be the neutral potential ?

963


What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

1460


how is the cable tray designed & how its total length is calculated for an Industrial plant Say for Ex. (500KW Motor Load)

1509


role of europe union in UK safety legistlation (electrical safety)

1389