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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

The advantages of Magnetic flux leakage technique over Ultrasonic technique for non distructive testing of material.

BARC,

1018

What are the probable causes for failure of heating elements

BARC,

4 15061

Meaning of ingrace protection for motor.for ex IPXY

BARC,

1711

how to generator maintenance (A Check, B check,Etc)

Cummins, HCL,

1294

why exciter frequency 150 Hz ?

Siemens,

1 6735

what is difference between 3.5 core and 4 core cable

Havells,

5 61109

DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER

SRA,

1123

can we start a 6.6kv ht motor with 415 lt supply

1 3280

why rms value of voltage is fed to transformer

Bhel,

1 2460

A IS TWICE AS GOOD A WORKMAN AS B AND TOGETHER THEY FINISH A PIECE OF WORK IN 14 DAYS.THE NUMBER OF DAYS TAKEN BY A ALONE TO FINISH THE WORK IS 1.11 2.21 3.28 4.42

Ramky,

3 12448

what is the breaking capacity and making capacity of circuit breaker and how

1093

Transformer Specification say 66/11KV, 23/27/35MVA OFDAN,what is OFDAN? we know ONAN,ONAF or OFAF

Siemens,

2 4837

what is different between grounding and earthings?

4 4378

which metal use as a electrical shunt?

2 2350

What is applied voltage for meggering a 6600V HT cable

Sail,

2 5730


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Un-Answered Questions { Electrical Engineering }

Why earthing is necessary for any equipment?

680


Define average demand?

157


where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

968


how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor

2198


what will happen if frequency is below 50 hz?

991






what is consequences of neutral and earth connect?

977


Why use in ht motore

740


WHAT IS SUBSTATION & ACCORDING TO VOLTAGE HT,EHT SUBSTATION EXPLAIN IT

2141


in shunt clippers why a resistor is used in sereis with the input

1052


Installation method of self treated earth electrode.

1026


What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

1265


what is the reqirred voltage in HT motor to get full RPM on no load test?

1097


How Self works in DG set

867


What is K-rated transformer? What is the use of it? What can be the size(pls provide calculation if possible) of K- factor transformer for 550kW,690V motor operating with drive (VFD)?

1169


What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?

1652