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Electrical Engineering Interview Questions
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Is it reuired to use house service barcket for 31/2 core 300 Sq.mm cable,if the distance between pole & shop is around 2 mtrs only or can I hang the cable with GI support in air? upto what size of cable GI serrvice btacket is necessary?

HAL,

1 2540

What is Gnat,Ant,Rabbit &Dog overhead conductor? Please explain.

1 8120

Can I do body earthing of machine by using Cable armour or I have to run another GI wire for body earthing and how many wires I need to run. Is there any rule for this. eartnig

HAL,

3 4271

can we use existing 6300V alternator for generating 6600V by increasing excitation,what are advantages & disadvantages to alternator & motors of 6600V.

GMR,

1 3267

can we charge 3 ph power transformer delta-star wound with neutral grounded 6.6kV/415V from secondary side(415V) but with primary(6.6kV) open by dg,what are the disadvantages or losses.

1 2214

why the transformer connected like STAR- STAR, DELTA- DELTA, STAR- DELTA, DELTA-STAR ...? why these connections ,,, explain the advantages these connections?

2412

what is the diff between VCB & ABCB breaker in substaions? explain the operating priciples of VCB & ABCB

1 5202

explain the operating principles of CVT & RVT

2 7003

For a certain load i need 100kw load ,In that case what rating mccb should i use?

5 9062

What are protections for dty type transformers

1227

What is Dry type transformer.How it works

Vatika,

6 13844

Where the Dry type tranformers are used.

5 5095

WHat is the general checks required for Dry type transformers

1463

what is the difference between ACTIVE POWER and REACTIVE POWER.I WANT CLEAR ANSEWER.

8 10359

how we can find out the speed of fan without using any measuring instrument

2 3676


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Un-Answered Questions { Electrical Engineering }

what is the clear formula to calculate cable size for a load

1265


According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3443


Why lose 1 phase voltage in 33kv to 415v stepdown transformer

1100


What are dependent sources?

476


hello friends this is krunal here.. i have applied for he officer train in hpcl electrical stream.. any one who have applied before for electrical stream please help me out.. post ur reply to my mail id: krunal_airforce@yahoo.com.. any tips, old questions for paper or any help will do.. plz help me.. your faithfully, Krunal Darji

1255






what is the working principle of a DG Set, Alternator, & exiter

9534


how to carried out tan delta test in 11 KV alternator ?

2315


Can u Explain about the electronic trivector meter and the use of data converters in them?

1684


why dc is used in control circuits for MV & LV switchgeras instead of ac

1285


How to find ampere on ht side for selection of cable size ???

1147


Can we use a absolute encoder to show rpm of a motor ? what about the condition when power is off ? what is difference if a incremental one is used ?abanirout@gmail.com

1432


What are locations arc protection relay is fixed.

1174


Why collecting electrode of ESP to be earthed

1449


difference between the applicability of nortons and thevenin theorem

1350


how is positive, negative, zero sequence is happen.. how is effect on 3 phase system

1104