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 happen when ct secondary are open circuited? why same thing is not happen in ordinary transformer?

BARC,

3 8052

difference between over current and over load protection?

BARC,

5 15221

explain working of differential protection for a transformer?

BARC,

1 4051

derive DC RMS value for half wave rectifier?

BARC,

3205

By just seeing a transmission tower, how can we knew the voltage it carries..?[110kv, 220kv, 400kv...]???

KSEB,

5 9200

what do you mean by cl PS CTs? What are technical details required for it's manufacturing?

1 4160

when voltage increases current decreases & vice versa why it is so?

3 5956

What is meant by inverse definite mean time (IDMT)& definitemean time (DMT)?

5 38501

what is droop control?

BARC,

2179

what do u understand about FACTS? how they are useful?

BARC,

1993

what is significance of B-H curve? how it differs form ordinary transformers to Amorphous Transformer?

BARC,

2 23132

explain with diagram how to protect transformers and substations from over current with help of CT's?

BARC,

1954

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

Asahi, BARC, K-Electric,

2777

what is resistance?

5 7554

What is the formula to find out two phase active & reactive power

Areva,

2188

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Un-Answered Questions { Electrical Engineering }

What is reverse power relay?

1183

what is plunger and what's the use of it in motor alignment?

2642

How do you compute voltage drop and cable size over distance?

2269

We have a couple of oil tanks at our plant. One of them does not have a lightning arrester installed. My question is it necessary to install an arrestor on every tank or will this particular one be covered by the arrestor installed on the ajdacent tank, Since all the tanks are close to each other. Basically, I want to know that if these arrestors or protection works in a parituclar area of effect or influence. Thanks

2054

In Designing the rating & accessories of a MCCB how to choose the type of releases..means what is the basis for selecting, thermal magnetic, electromagnetic & microprocessr based releases

2027

What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.

2458

Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

2181

quantizer means?

1942

what is difference between speed mode and torque mode in motor?? explain in simple words please.

1596

How to synchronization will be done between two DGs ?

1773

why and how current drawn by battery charger depends upon the altitude where it is located?

2039

Please elaborate th´evenin’s theorem?

1147

i want to learn control schedule for 11kv panel? can any one send the detailed control schedule?

2430

how does high earth to neutral voltage affect electronic equipment?

1548

how rectifier transformer work in electroststic precipetatore(esp?

2649

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