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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How many homes can a 500kva transformer supply in S.A

1 8084

how we will deside the high voltage value

986

why it is mentioned as 8/10 mva transformer why not directly 8mva or 10mva transformer. please explain me the full detailed reason.

Qatar Gas,

4 5735

What is disc insulator and it's application..?

2 2323

What is Long rod insulator and it's applications..? merits over the disc insulator ..?

987

How to find earthfault location in long cable layed underground or outside.

3 3176

In single core cable, Why non-magnetic material is used??

1 1496

what is the mean of"turbo" in turbo alternator???

CCCL,

1 3925

Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.

Motherson, Motherson Molds and Diecasting Ltd.,

1405

If increased the frequency up to 1000 then what changes shows in voltage?

1546

what is the difference between synchronous motor and induction motor?

3 3960

in 11kv/400v transformer when only one phase of 11kv supply fails what happens to sec voltage and why

6 10344

In a 3 phase induction motor(without connecting supply) if we rotate its rotor by hand and check resistance of stator winding at motor terminal box its resistance varies why ??

Jindal,

3 4134

How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......

1025

How the setting of the vector surge relay shall be calculated when the relay is to be used for Grid islanding application?

1205


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Un-Answered Questions { Electrical Engineering }

armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

1137


What is the formula to calculate distribution transformer De-rating on iron losses basis

931


what is mind in cable

1088


What does bode plots shows?

164


in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.

1299






I Want randstand placement papers

793


HOW CAN YOU CALCULATE PRACTICAL EFFICIENCY OF A ASYNCHRONOUS INDUCTIONMOTOR OF 7.5KW,& MOTOR IS RUNNING WITH AVOLTAGE OF 410 VOLTS,& TAKING CURENT OF 13 AMPS

903


What is the difference between voltages or potential difference? And what are they?

168


wat is d diffr btw shunt coil and trip coil in VCB?

1902


pre arcing time of ehv breaker

1081


why do we put a transformer on soak before loading it

156


What is Faraday's law

531


what is the difference between directional & non directional earth fault with example please explain.

827


How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

3358


Scott connection is used for A 3-phase to 2-phase conversion B to achieve higher effciency C to save copper D to reduce harmonics

1427