Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is meant rectifiers..

MTS,

1 3229

how does we calculate the capacity of battery

MTS,

1 3494

what is meant by boost charge in batteries

MTS,

1 4611

how can we charged the battery in DG

MTS,

2 4443

what is the purpose that we use PLC system in power system

Glatt, MTS,

2 4156

Is Transol transformer oil comparable to nynas nytro libra?

2605

For a 50MVA (138/69/13.8 KV) transformer, what would be the maximum demand in order not to exceed 80% of its operating capacity.

2 4376

i want to make an elec generater with only 12v car battery car alternater and 12 volt motor ..... will the battery charge and give power at same time with out over charging the battery?

1 2822

What is the difference between Ac curent & DC current

Juniper Networks,

2 5449

we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

Siemens,

1451

How Kneepoint voltage of CT practically related when CT in service. ie Knp is above 670 what exactly means

ABC,

1514

difference between servo motor and synchronous motor

Hitachi,

1858

Why frequency fix in 50 Hz?

6 6428

Why transformer called by KVA?

Reliance,

8 10247

What is the difference between harmored cabled and unharmored cables

1 2959


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Un-Answered Questions { Electrical Engineering }

how are reversing the direction of dc motor

1174


hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"

1592


Brushes are placed at magnetically neutral axis,when brushes reach that point,the armature conductor gets shorted,but it can be seen that the dc supply is also shorted,wont that get damage? help me plz

1784


what is the generator rating for 40 amp load of 3phase motor.?? 400v voltage of generator... plz tell me with formula its urgent...plzzz... and also tell me that this 40 amp at all phases mean 40 amp on red,40 amp on yellow,40 amp on blue...... or the total sum of that 3phase is 40 amp....

6967


what r the safety measures in UPS ? explain all?

1746






We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

1385


ROC converges if poles and zeros lie inside a. Origion b. Z=1

1757


why ht motors are star connected?

1405


How to select transmission line type (i.e. 11kv or 33kv) for new established industries

1571


What is DTR erection?

3557


I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400

1387


Whether it is possible to measure energy at the input of rectifier transformer (12 pulse with very high odd harmonics)

1445


how to calculate fault level?

1627


i want to know that what is the eligibility critaria for ongc exam?

2542


Why the frequency of ac in india is 50 hz but in some other countries it is 60 hz.

1670