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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Neutral CT for 45MVA 132/11 KV YNd11 Transformer. NCT REF CLASS-PS or 5P20 with 20VA burden which is suitable.

1 3031

If a three phased motor or not working phased change on poles so how to find which one red yallow & blue

1 2729

What is difference between ct&pt transformers?

Adgas,

4 5638

what is difference between neutral& grounding?

6 5974

what is thermal resistance of PVC Cable.

1805

What will happen if we give 220v supply on both sides to the bulb

Exide, Sumeet Industries, Toshiba,

7 11286

In Induction machines which type of emf is induced ( statically or dynamically)?

1 2620

What is the difference between multimeter

1969

How does a ideal c.t. works ?

2010

What is the lower limit of break-down voltage of converter transformer.

Tata Steel Limited,

1911

What is Harmonic affects in power system. what is unit of harmonics and how to measure it. how much value should be in power system.

1 2916

Is RTCC panel needs any control supply.

HPCL, Schneider,

2053

What is the maximum advisable distance where it is required to interconnect a 500 KVA 480 V 3 ph transformer and the main panel or MCC ignoring the voltage droop affectation, does it is exist any standard about it?

2 2950

what is the difference between c power and U power acb breaker

Radisson Blu,

6415

11 KV distribution system where neutral is produced ?

ciss, TATA, Tata Motors,

4 6002

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Un-Answered Questions { Electrical Engineering }

What is reactive power and where it is used.

1696

why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

2040

How many types of instrument cables are there?

1098

I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

3289

Why line VTG = √3 phase VTG in star? How?

1619

what is ic 01,ic 06 ?is it types of cooling?

4317

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

2022

what is meant by 2 within a star in a voltmeter dial?

2089

What are diffrent type of road taxes?

2028

how we do Vector group ,magnetic balance and tap changer test in Transformer?

2471

How to know Resistance and Reactance value of main and aux winding of single phase capacitor start capacitor run induction motor to find capacitor value?

2044

What magnetic circuit is formed in berry-type constructions and why?

1070

A car's starter motor draws a current of 100 A at 12,0 V when starting the engine. The mechanical power required to turn the engine is 960 W. At what rate is energy from the battery converted to non-mechanical forms of energy?

2168

what is difference between bus coupler and auto transfer switch

4186

what are the breakdown voltage rating of mini- curcuit'transfarmer!

2172

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