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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

JSW,

2240

Recently we had experienced following problem All RCCB breakers (connected to the load as well as spares) connected to various UPS systems at various floors at a high rise building tripped during a power break down and upon starting up of generator.This Generator is recently inducted into the installation. Can any one explain the reason behind this tripping. Regards Viswanathan

1 3970

what are the settings is there for ABB REM543 Generator Protection Relay

1 6585

On PVC conduit the class "A" "B" or "C" is marked what does it shows. Either its thickness or its composition?

2 5209

why do harmonics generata?

1 4259

XYZ

ASD Lab,

2097

what is AVP?

2 5530

why do we carry out winding resistance test?

MahaGenco, MAHINDRA,

2239

in traction which type of supply are used

APGenco, Construction,

15 17815

Explain the term parallel path in dc machin ?

UPSC,

2156

what is working of Master trip relay ?

9 43409

What is working of Trip Ckt.Supervision Relay?

1 7019

1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

Bosch,

2571

What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?

2250

Why do we use only Sinusoidal Wave in AC supply why not the Square,Triangle or Sawtooth etc?

2 6803

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Un-Answered Questions { Electrical Engineering }

In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?

2084

Define step response?

1104

When semiconductor fuse does save thyristor in each cycle of conduction? Why under voltage setting keep less in SPRS and more in DC drive?

2041

can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you

1949

What is cut-off rate?

1167

How can we calculate the motor frame sizes?

3376

what is mean by Digital Logic Meter (DLM)

2331

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

2743

Sir, I have applied for the of Jr.engineer(Electrical & Electronics) & ASST. LOCO PILOT at ALL RRB BOARDS. please send me all RRB Boards solved papers in the year of 2001 tO till date. i requested send me the papers to my id as soon as possible (jet_0991@yahoo.com). (This is very urgent) Thank You,

1800

Inductor and capacitor........power in one phase and ...... in it another phase.

2098

PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.

1991

Why Neutral Isolation is required?

2187

What will happen if the voltage in my house drops from 220V to any lower voltage?

2135

what is the working process of over & under voltage relay.

2178

What is class ab operation?

1018

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