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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Explain Buccholz relay in detail.

5 4945

What are interpoles and commutation windings?Why r they used?

1 2844

Does power factor vary with speed?If yes, how?If not, why?

Genco,

4 4922

What is rotor angle stability?

2 14589

What is current chopping in CB?

1 16996

where the protection CT in neutral of transformer be located, before bifurcation or after bifurcation and why.

2 6621

how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?

1154

What should be the DC voltage for Hi-pot test on 11kv switchgear

3 7686

I am a electrical engg. diploma holder,applied for junior engineer (electrical),Kolkata RRB. Have I to attend all electrical,mechanical&civil portion in written exam.???

RRB,

14802

how we can check the CT & VT?

2 4108

what is mean by xlpe cables?

3 3969

differentiate PLC,DCS,SCADA?

SAS,

1 5793

WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK

1 4407

what convarts RRA in alternator ,AC to DC or DC to AC,

Birla,

1 4253

why maintenance batteries used in DG sets not in MAintenance free Batteries.

4 9259


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Un-Answered Questions { Electrical Engineering }

What is the effect of solar radiation on the design of an Isolated Phase Busduct?

1404


diff b/w elcb and rccb

1306


What are motor generator sets and explain the different ways the motor generator set can be used ?

252


formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?

1250


Define the three phase formula fuse.

980






How to select the proper VSD to operate high inertial load

863


what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

1393


how will we calculate the copper wire load..

1115


We have 110Vac ,10A ac supply which is converted into 110VDC & How much DC current? which factor is reqired for dc current calulation?

3901


area control error

873


What is CCM in Electrical ? where can we use this material?

500


Define the overload capacity of the motor?

1175


What will happen if a dc source is given to a tubelight. Will it work or wont it work....

1058


Why HT 11 KV Slipring Motors are connected in star ?

1363


from which subjects most of the technical que will b asked for hpcl(electrical).pls help me

1197