Electrical Engineering Interview Questions
Questions Answers Views Company eMail

A 150KW 440V motor is need to replace in the field instead of faulty one. what are the main parameter should I need to check?

1 3578

Why fuse is? What will prevent by fuse?

2 4076

What are the fire Estingushers use in electrical fire?

3 4630

What are the usege & different between UPS & batteries with charging system in in Substation?( UPS 120V AC & battery charger is 120v DC)

1 3449

What are the differents between Breaker & Contactor?

8 59751

What are the main parts of VCB?

12 26450

If a contactor need to replace with faulty one. what I want to check?

Bhel,

2 3343

If the 11 KV supply is fail. what will happened with it's breaker if it is supplay to the 11KV motor?

3 4658

what is the differnce between high impedance relay and low impedance relay

Areva,

4 19703

what is LA CT PT panel?

Dwarikesh Sugar Industries, NTPC,

3 23584

At what load maximum effiecency will be obtained Distribution transformer and Genarating transformer Pls clarify?

4 9771

Why Neutral Busbar CT & transformer neutral CT connected with phase CT in Restricted Earth Fault?

3 17668

how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?

Crompton Greaves,

1542

What is the basic difference among Circuit breaker,Contractor and Isolator? Are they different names of same device/equipment?

2 10519

how many types method in earth testing?

ONGC,

3 6086


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Un-Answered Questions { Electrical Engineering }

What are the two major types of control system?

638


what is conductor copnstant of ab cable

1314


What do you mean by transformation ratio of instrument transformer?

628


what is the function of choke in the flourcent tube lights and why the colour is in white mostly in flourcent tube lights

1473


which connection is safer series or parallel?usually which connection we prefer at home?

8287






what you have to see after one week or month from the day of installation of transformer ?

1223


For overhead protection we use which transformer?

1931


I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.

1594


What are the characteristics of negative feedback?

603


how r charge carriers produced

1623


What is the meaning of Insulation H for transformers????

1606


which pump used in STP

1658


What is the unit of attenuation?

607


Draw the vector diagramme for Asynchronous Induction Generator at noload,half load and fullload.

1472


what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

1555