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 are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

2365

Wtat is vaccum currcuit breaker.define with cause of used.and where be use it Devise .

1 4000

how invertor convert the dc into ac give brif detail

2155

How we can convert H.P into KW or Vice versa

Suzlon,

11 19807

Why 4 pole generator generates more power and 6 pole generates less power campare to 4 pole

Julius Berger, Suzlon,

2 6531

Why Batteries are rated as AH i.e AmpereHour,and its formula to converting AmpHour to Amp

Suzlon,

4 9157

What are the different methods of improving power factor,especially in Wind Sector

Suzlon,

2 7120

11KW Delta motor is taking about 44Amps in star and goes upto 70Amps in delta and trips OFF. The rated current is 26Amps. Application is for the blower. The motor takes ( no load without coupling impller ) only 2.5A and 5Amps in star & delta starter test.Need to know why its taking high current.

Pfizer,

10 19915

What is relation b/w Transmission Lines & Communication Lines ?

2 8855

quantizer means?

1942

WHAT IS DIFFERENCE BETWEEN idmt and instentanous relay? is idmt is used as back up protection or else?or when instantenous relay saturates IDMT will operate???

BK, REL,

1 11588

what is threshold voltage for a relay???what does it exactly means ?whats its value in our indian transmission system say 11kv feeder RMU relay

3 13344

if the back emf eqution for dc motor EB=(QPNZ/60A) THEN what is the value of A for PMDC MOTOR OR how can dicide the value of "A"

BSL,

2 5193

IF WE SELECT THE 60H FREQUENCY IN INDIA WHAT WILL THE GOOD AND BAD EFFECT ?

3 6788

How can we calculate the capacitance of generator?

1 4680

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Un-Answered Questions { Electrical Engineering }

why should the primary of transformer be connected in delta in a heat run test?

1979

how to select electronic timer(Star-Delta) setting for diff. rating motors

1950

why transmission is only 3 phase and not 2 or 4 or poly phases

2140

What is meant by short-pitched winding?

1209

rajha power sector details

2025

what is RFCT and Insulgard Relay & It's function?

2191

Whether the vacuum contactor requires Short circuit protection?If No,why?

2043

Why we do 2 types of earthing on transformer (ie:)body earthing & neutral earthing , what is function. I am going to install a oo kva transformer & 380 kva dg set what should the earthing value?

1145

IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM

2167

What is formula calculation size cable wire ?

1947

does buccholz in a transformer use batteries

4877

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1532

Shall I use 40A semiconductor Fuses in 32 A SFU ? Frame size is same. What Happen if Fuses burn on SFU?

2121

Efficient electrical earthing in hard rock area

1571

explain remenance . differentiate high remenance type ct & low remenance type ct

2130

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