Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why lightning arrestor are made by 2 stack of insulator but why cvt are fully 1 stack of insulator.

1 3547

why we are maintain phase to phase clearence

4 5412

why generation of electricity in low value voltage

3 4436

why the insulators are in cofee colour???

Visa Steel,

4 11119

why the tapping of transformer on ht side??????

CTS, OPTCL, Visa Steel,

12 38622

what is maintenance?how to explain

1444

cable selection formulas for electrical load.

Bhel,

1 7472

megger how much voltage will produce ?

4 7947

How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.

1705

what is creepage distance

2 8705

what is the working principle of energy saver control panel. please give the complete calculation & theory.

Lupin,

1822

For what purpose an AVR in generator sensing generator output voltage?and how the sensing is done by AVR?

3 7911

Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

HAL,

1640

Is it possible to use AC supply insted of DC supply in trip coil operation? if not, why?

HAL,

5 5985

How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

HAL,

1580


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Un-Answered Questions { Electrical Engineering }

In motors how many types of cooling systems were used?

1569


How to calculate or formula to calculate rhe power in 2 phase system ??

962


What kind of maintenance is conducted for Transformer

1732


plese send me the oces/dgfs sylabus and previous year question pattern of electrical engg.?

1790


what are the difference between AC lamp and DC lamp

1664






if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

1438


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

1639


How to Calculate the Fault Level of Electrical Installation

1746


what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?

1814


In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?

1462


how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.

1458


how to check avr of dg set of 125kva

2143


How will be the single line diagram of series trip HT breaker? how it works?

2084


What are high pass filter and low pass filter? and What are the flowmeter ?

1496


why ht cable end termination don't have a gland?

2273