Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is core CT & it's function?

1715

What is servo Motor? What's the advantages of this motor over Induction motor?

Amtek,

1 3976

How instantanious short circuit current is calculated? its formula?

1 3319

What's ND relay & it's functions?

2 3841

Why we are getting low voltage in star connection?

2 4465

why star point of HT motor not earthed?

1724

What is required of exietation to the alternater.

3 3940

What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding?

2 3531

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1712

How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula?

2 3992

Why Earthin is not required in Xformer primary side when it is in Star / star?

2 3889

How can claculate to attain the desired PF in the line ( HOW Much KVAR is required ) Pls Give the formula? Equate Petrochemical 0 1 how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec. 0 1 What will happened. if we feed 3phase supplay to the stater with out insert the rotor. How much current will flow through the stater winnding? Equate Petrochemical 0 1 What is required of exietation to the alternater. 0 1 why star point of HT motor not earthed? Equate Petrochemical 0 1 Why we are getting low voltage in star connection? Equate Petrochemical 0 2 What's ND relay & it's functions? Equate Petrochemical 0 2 How instantanious short circuit current is calculated? its formula? Equate Petrochemical 0 2 What is servo Motor? What's the advantages of this motor over Induction motor? Equate Petrochemical 0 2 What is core CT & it's function? Equate Petrochemical 0 3 what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY L & T 0 4 What is required of exietation to the alternater. KNB 1 23 what is the design voltage for 6.6KV 2000 KVAR HT capacitor? Consultancy 0 3 Pls explain about vfd control?Where it is used, Give some example? siemens 1 22 Please explain me abt PQ diagaram in the power sector. 0 9

1580

What will happened if the neutral of secondary of Xformer ( Star point) Note it's above KVA rated Xformer

Equate,

1391

Why HT motor is connected in Star?

Equate,

3 6282

In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

Equate,

1577


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Un-Answered Questions { Electrical Engineering }

Explain mechanical rotational system?

617


can i connect wavetrap in 2 different phase in EHV line?

1341


direction of tarbine& genrator

1596


Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.

666


hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

1439






write a program that prints prime numbers from 1-20 in digonal form

1498


Why do we avoid electrical conduits in floors at apartments?

1604


Explain (in simple ) - root mean square. whats its role in electrical fundamandal.where its used

1785


I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate

1139


Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

1526


What is difference between Harmonic and Non harmonic Capacitor Bank?

2363


how to discharge 3 phase power factor correction capacitors

1936


how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you

1491


Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

1194


Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????

1514