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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Why grables are put in substation?

1 2825

Explain the advantages of the wheatstone bridge method of measuring resistance?

7 48125

In what way does the variable ratio-arm improve the usefulness of the wheatstone bridge?

1 4597

Explain why inductance of the iron cored coil changes with current?

2 5001

Derive the inductance of a coil in terms of its physical factors.

1 3354

Let me know that how i calculate the alternator sub tranciant reactance and tranciant reactance.


assume we are put both df/dt and vector surge relay in same bus the df/dt relay setting is +5 hz an -5HZ. we want operat the vector surge relay before the df/dt how i calculate the setting of the vector surge relay.

1 5153

1.what is the contact resistace of CB ? 2.radioactivity should be mesured with---------?

Power Grid,

3 4638

Why is making current of CB always greater than CB breaking burrent?.

JP Group,

6 22962

what r PID controllers?why they r used?what is there purpose?plz Explain in detail


what is mean by PIR in circuitbreaker and give me detail of that?


what is STUB protection in tranmission system and switch yard area?

KSEB, Power Grid,

9 65715

how does the power is travelled in conductor

2 3067

Is there any specialised book to refer about fault level calculation both in MV and LV side??


electrical machines

3 14703

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Un-Answered Questions { Electrical Engineering }

what is LSR?


what is the formula of starting current of 3phase and 1 phase motor???


It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.


nwhat are the main Components of servo motor?


what is the terminal voltage of dc series generator running at rated speed at no load?


critically criticize the application of ring main unit in power system


How they LT panel busbar size choose


hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?


when ID fan will immediately stop through VFD what exactly cause and problem the ID fan


How do you select the pickup value of the relay?


1.What will be stored in online ups EPROM IC?


which is the best institute for PLC,SCADA,DCS in hyderabad


According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor


No load tap changing transformer working


What is step signal?