Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how moving coil indicator works?

1 1973

how LVDT works?

2 4042

what is an oscillator?

7 4127




What is a surge supressor why its is used in synchronous generators

770

what is High resistance grounding and whatis the criteria for the selection of High resistance grounding

MAHINDRA,

830

magnetic circuit consume energy

3 2522

1.generator rated as 1000 mva,11kv .8 pf what will 0.8 pf will indicate? 1.max pf it can supply 2.min pf it can supply like this 4 options there what is answer.explain

Power Grid,

5 9323

1.Why hydrogen used for cooling in generators 2.Why electrical equipment protected by ground 3.Why earthing for transmission line 4.What is rms value of half wave rectified square wave. If Rms value of actual wave 2amps.

Power Grid,

1 1318




PLEASE SEND ME NTPC RELATED INFORMATION LIKE WHICH TOPICS HAV MORE SCOPE,BOOKS TO READ,CUT OFF...PLEASE.mail at thiru.1203@gmail.com

756

why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

Grasim,

845

How can maintain our H.T. motors used in cement plant. please send me procedure.

3821

what is the workimg of ct &pt?

5 4390

what is the synchronous timer ? and it applications.

CPCL,

1046

i need previous entrence exam papers of nhpc.

1563

how can maintaince the acb contactor moveing and fixing kit

Gulf Cement,

773


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Un-Answered Questions { Electrical Engineering }

what is KSR type transmission tower? What is LSR type transmission tower?

2289


why and how current drawn by battery charger depends upon the altitude where it is located?

794


what r the preventive maintenance of air compressor

787


what is the IPC ? & what the uses ?

171


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.

411






what is the max. acceptable leakage current in 33kv bus bar

1327


full form of flry b

1930


What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)

1065


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

686


why power factor is important?

4807


hello friends this is krunal here.. i have applied for he officer train in hpcl electrical stream.. any one who have applied before for electrical stream please help me out.. post ur reply to my mail id: krunal_airforce@yahoo.com.. any tips, old questions for paper or any help will do.. plz help me.. your faithfully, Krunal Darji

622


for 5KW resistive load can anyone please suggest me whether to go for UPS/Inverter or Generator depending upon cost calulations

815


what is the basic need of domestic loads 1- voltage 2- current

699


How we can calculate the consumption in kwh of motor on basis of kw @100% load, @50% load & @ no load.

1581


what is allowable ac mixing in dc

775