Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is short circuit analysis of electrical networks?What are the procedures to be followed for its calculation?

DLF,

2 7163

how the arcing is made in ac electric arc furnace? ( between the three electrodes in any sequences or between the electrode & the charge(steel))

1 4035

What is Phasing out test?

1 22303

Why we have short circuit the secondary of the transformer

1 3711

what is high voltage in india?

Essar,

11 12900

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?

1361

how can we know the size of cable cross-section from current rating ?

3 4510

starting torque is increased and current is decreased by using external resistance in a slip ring induction motor. How??

3 6293

what the effect will occur if we increase the airgap in induction motor

IES, Tanfac,

4 11043

how can we select the type of wire.what factors we have to look on it , do we have some formula to calculate it. please guide me on it

1486

what's the outstanding feature of universal motor?

Tanfac,

2 7028

what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?

1 3392

Three phase alternators are connected in star connection why?

Tanfac,

13 39036

can u light up bulb with out useing neutral

12 23893

How can we findout the maximum efficiancy of Transformer? At which load?

HAL, Tanfac,

1588


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Un-Answered Questions { Electrical Engineering }

what is meant by moulded case circuit breaker ?

1694


What is superposition theorem?

683


How you give clearance to a spare feeder.

1203


how does a submersible pump work..?

1464


IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

3165






i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

1636


How to check the cable fault / hv test of transformer cable.

1376


What is a differential amplifier?

636


What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

1534


Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

1624


How to address the servo drive for motor

1530


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.

1719


What magnetic circuit is formed in berry-type constructions and why?

643


In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?

1740


what are the protecyion of transformer & generators

1449