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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Corona occurs between two transmission wires when they (a) are closely-spaced (b) are widely-spaced (c) have high potential difference (d) carry d.c. power

Power Grid,

2 5702

which type of winding is used for high voltage & low current?

GEB,

1 2517

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1503

Difference between rating factor of cable and derating factor of cable?

1643

what size steel armoured cable is required to support 1500kva capacity. would 70mm squared be enough or would I need 90 or 120mm squared 3c plus earth

Conan Minerals,

1385

single phase voltage 230 and Three phase voltage 450 why 690 voltage

XYZ,

1 2729

Why PS class CT is always preferred for Differential protection?

1604

Who are the manufactures those manufacturing 3Cx2.5sqmm FRLS cables. I heard about FRLS technology adopted only in wires useful for wirings

2086

For 160kw motor what size of cable and material is needed.?

1 2716

how to calculate IR value of 33KV cable ??

1907

How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights

1 2587

list the advantages of RCCB over other circuit breakers?

1709

what will happen if dc is supplied in acb or mccb or other circuit breakers?

1 1974

sir, 3phase induction motor takes different pf and different KW in three phase while running,explain reason

UltraTech,

1479

3ph motor running with unequal kw and different pf what are the reasons

UltraTech,

1868

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

WHY RATING OF VCB NOT LESS THAN 630A

2622

how did i get the competency certificate as electricle supervisor. iam completed my b.tech.but i dnt have any experince, this certificate is required for applyng ongc mangement trainees. what should i do sir please suggested me

1902

How can we choose the rating of submersible motors

2639

EXPLAIN THE TRANSFORMER MAINTENANCE?

2281

I want formula to calculate current loss with distance in km.I searched many sites but didn't right answer.Plz reply me

2079

mention hazard experienced during installation

1979

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

1103

explain different types of d.c motors?

1154

bsec exam syllabus (mis)

1285

What is phase cross over frequency?

1134

why we need to us lenz's law for synchornous motor

2572

Can anyone explain me about the capacitor calculation

2196

What is block diagram?

1102

What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1847

What is the role of power pack in substation protection system?

2701

For More Un-Answered { Electrical Engineering } Questions Click Here