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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

In 11KV Double pole structure for each phase we are using Disc one Insulator. Why we are not using 2 r above insulators instead of one insulator?

Genus,

4 9523

What is the difference between Derived earth Fault and measured earth fault.How it works.

1 20753

Which one hurts more AC or DC Current ?

10 11402

WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

Bhel,

2126

what is star delta starter? how it works? give its control and power diagram.

Bhel, Point to Point Solution, Star Wire,

2045

what is RTD? what is THERMOCOUPLE? What is difference between it?

Bhel,

2 5631

what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

Bhel,

1 3330

how to decide cable rating? send me cable size,ampere rating data

Bhel,

2 5286

what perpose of use CT ratio in gt,st,uat

1 3453

WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.

L&T,

2095

what happens when you connect a.c and d.c supplies

1 2334

What is the difference between class0.1 and class 0.1s accuracy of current transformers

2 6803

how to identify 3phase....r y b .A new make altnator how to identify R

2 4911

how to modify DOL control panel into Delta Y connection?

ABB, PDCS,

1901

DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.

1846

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Un-Answered Questions { Electrical Engineering }

In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes

750

CBCT selection

2234

Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

2025

How many types of electrical earthing are there?

1108

What is meant by derating factor?

1170

application s to shunt coil

1874

do you have some of interview Questions in power and genrator section in general whith answers

2139

Is better to supply the voltage for static exciter from the auxiliary power source or from the SG terminals? And why?

1885

current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

1556

Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

1961

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.

4122

we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

1944

why electron produce magnetic field when it is in motion?

2099

can some one clearly explain why -48 volt DC use in telecom site????

1640

Why is remote backup preferred to local backup?

2010

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