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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What_is_mean_by_negative_dc_voltage? why we use -48v except +48v in DC power supply systems.

APEL, BSES,

2 4889

how ship earthed?

Marico,

5 14447

why three phase three wire system probably did'nt have neutral

Marico,

2 6020

what is the difference between synchronous generator & asynchronous generator

Reliance,

4 19604

what do you mean by leading power factor & lagging power factor

Suzlon,

13 62119

In power transformer YnD0 Vector Group is possible or not? if possible, what will be the vector diagram and what are the conditions?

2 6335

What is class 2 coordination ?

2 2248

what is difference between mccb,mcb,elcb,pccb

7 17540

how generator generates electricity?

Suzlon,

1 3135

what is the significance of tan delta testing?explain the theory?

7 32705

how to test generator protection rotor earth fault relay and locked rotor test?

1 12965

hoe to test voltage restrained overcurrent relay?

2 3945

What is the Difference Between MCCB & ACB & VCB

3 7496

Pls say , how we calculate lux / sq.ft, which formula used for calculation

5 15492

how calculate busbar size for rated amps, which formula use

Rites,

2 10016


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Un-Answered Questions { Electrical Engineering }

I am inpecting a 10kVA UPS what tests should i do and should i observe?

1340


what is the voltage regulation for unity and zero power factor?

1322


sir i completed apprentice in TNEB.apprentice is eligible for 'c' licence

1151


What Should be the value of Vector Surge angle at Tripping and how to calculate it?

1183


What is float cum boost charging system?

1165






define displacement & magnitude ?

1024


redundant connection in contactor?

1665


When we use 3 terminal resistor?

229


How many types of instrument cables are there?

226


The series field winding has low resistance while the shunt field winding has high resistance. Why?

519


what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????

1010


What is touch potential and step potential?

1244


what about the power of wattmeter at starting and loding?

1267


1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?

1762


WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?

1256