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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between tie bus and bus coupler?

 1 17613

Why does the radius of armature is less than the radius of pole shoe?

ABB,

1696

Why C.T secondary s2 done earthing?

4 13991

what is Harmonic effect?

2 3914

Star & delta kis principale pa hai.

ME,

3 4850

in dc machines in the armature nature of power is ac but why we take rasistance instead of impedance?

 1 2902

What is the difference between Droop vs Isoch Control?

 1913

Determine the BTU size of an aircon for 20 sq metre room

 1457

why it is necessary to maintain frequency constant in a power grid ?

NTPC,

1 5434

what is the difference between electrical wire and electrical conductor?

 4 17249

how to reduce earth resistance in sandy soil.

1 3182

How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

 1563

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

 4275

what is quality factor in series resonance circuit and calculate the factor of voltage magnification? how it happens?

BARC,

1501

how to change the load sharing between two synchronized identical alternators when both are running with Diesel engine? assume both are feeding to same feeder?

BARC,

1 2756

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Un-Answered Questions { Electrical Engineering }

What is the Designing & Selection Procedure for a DG/Transormer of rated capacity?

1709

What are the types of power in electrical power?

729

some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?

1325

what is meant by k-rating in isolation transformer?what is k9, k14 stands for?

2252

What is the method of estamating of cable, CB,MCB ?

1680




In parallel operation time both NGR’s close or not close if both close what will happen

3278

what a function diesel generetaor turbo charger & turbo charger is more heated explain reason ?

1819

A 500 V shunt motor runs at its normal speed of 250rpm when the armature current is 200A. The resistance of the armature is 0.12 Ω. Calculate the speed when a resistance is inserted in the field reducing the shunt field to 80% of normal value and the armature current is 100A.

2026

whati s the sludge current in ups

1704

A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

1878

i have 3500 amp load and select current transformer and perches.how i calculate .please understand

1728

What types of high speed CMOS circuits have you designed?

1640

After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.

1494

Why in ESP Positive earthed

2570

why swityard is necessrry requirement in any bis power distributin systems?

1893

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