Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why is the core of the underground cable is spiral in shape instead of straight?

Mecon,

8 7904

what s the differenc between electrical &electronis , how to define them

9 8458

how to define tell me about self

Bhel,

1509

Can anybody explain Why starters are not used for motor starting in industries?

9 9040

WHICH IS BETTER( FOR POWER SAVING)- ON LINE OR OFF LINE UPS ?

Punjab National Bank,

3 7166

If connected load of Asphalt plant is 375Kw. What suitable KVA DG set is required. What is calculation formula. what extra load have to consider. in what efficiency it will work.

MAHINDRA,

8 15477

what is the suitable voltage of transmission line to transmit 10000w power through 250 km. (a)11kv (b)33kv (c)66kv (d)132kv ]and please tell me whats the logic behind it

ONGC,

7 19077

tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?

ABB,

10 14715

what is reactive power ? what its role in transmission lines?

Thermax,

3 11296

Why we are mostly using a single 3-phase transformer instead of three 1-phase transformers?

7 10308

what is the diff. b/w restricted earth fault relay & standby earthfault relay and where they are used?

KSK Energy, Reliance,

4 69048

WHY WE ARE EXPRESSING KW-HR AS UNIT OF ELECTRICITY.........?WE CAN EXPRESS IN ANOTHER UNIT.....?

Summit Power,

4 6761

why current increases when voltage decreases in ac system

10 25623

How does a star connection and delta connection work? How does the star connection save starting current and how does it change to delta?

3 11290

how much loading in terms of ampere can put on 5 MVA,33/11 KV TRANSFORMER having rated current 263 Amp ?????????

ABB,

11 33657


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

1256


How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

2232


why surge protectetor work explain with the help of circut diagram?

1525


what is Fan Control Cubicle

1872


Write a note on materials used as a fuse element.

1676






1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?

1369


When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

739


what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

2625


i've iocl interview.. if you know the interview process please give me information..

1444


EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.

1647


How can calculate the earthing strip of Copper/GI for rating of 30kV,discharge current 10KA Lightning arrester.

1858


Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

3362


For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

713


What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

758


FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?

1668