Electrical Engineering Interview Questions
Questions Answers Views Company eMail

In directional earth fault protection for generator, one core balance CT is for residual current, what other CT is for, which is placed on neutral?

2 3725

what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?

1507

HOW TO CALCULATE THE APFC Panel Design

1 3875

what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

1534

1.What is captive power plant? 2.What is national grid?Give brief idea.

1722

does buccholz in a transformer use batteries

2 4026

difference between circuit breaker and switchgear?

L&T,

6 10981

Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv

KPIT,

2 8763

Any Electrical Engineering jobs?Please refer for interviews. Thank you

1445

what is meant by directional earth fault and non directional earth fault? describe both.

1486

WHAT IS MEANT BY OVER EXCITATION IN GENERATOR TRANSFORMERS? DESCRIBE IT.

2195

what is the difference between an alternator and a synchronous motor

1596

a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor

2 3470

what you mean ct ratio? why use 400/5a,200/5a,150/5a ?

1 2302

what is servo motor & how does it work.

1527


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Un-Answered Questions { Electrical Engineering }

what is the difference between switch yard to residential area.and how much required it.

1292


how to decide no of electrodes for 1600A LT Main incomer panel

1197


What is depreciation factor?

1793


Define end float in a motor?

5491


how desiel generate sart fail of eb?

1687






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

4288


FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

2975


what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

1802


what is the IPC ? & what the uses ?

1027


what is the role of energy meter in distribution system ?

700


How much ph is maintained of water resistance starter for slipring induction motor ?

1995


What is Scheme Test of High Voltage Switchgear. Which tests it includes.

1919


How earthing/grounding done in aeroplanes and ships.

3133


what is the meaning of neutral displacement ???

2275


WHAT IS LOAD CELL

1728