Electrical Engineering Interview Questions
Questions Answers Views Company eMail

why onlyseries motors are used as universal motors? why not shunt?

TCS,

4 9813

int a,b ; a=b=10 ; if(a>b){ printf ("%d",a)}; no error output is a=10

TCS,

2 3793

How eddy current generation support the idea of train braking?

1529

Which phase is prefered for connecting 1phase vt used for synchronism in an OHL? why?

Siemens,

1 3326

which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

Siemens,

1641

from which formula we select a capacitor rating?

CLG,

1694

Why slip-ring and brushes are not required in squirrel cage induction motor?

L&T,

4 9250

why normally Generator rating are between 11Kv to 22Kv?

Torrent Power,

7 16898

How can Inductive load reduce the line voltage of HV transmission line and vice versa Capacitive load?

1 3265

what is meant by auto transformer?

Suzlon,

4 5788

what is tandem isolator ??????????

5 34011

Why delta connected motors are used normally.

4 5574

what do you call the last pole on a overhead line near a substation

2 3847

hi this toufik here. i am doing my b.e.degree.now i am in final year and supposed to do a project in this year so i thinking to control the buchholz relay using software base means checking the status of transformer oil using microcontroler, plc or scada. so can i do so...??? alz suggest me...

2 3529

from which formula we select a capacitor rating?

Suzlon,

4 8426


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Un-Answered Questions { Electrical Engineering }

No load tap changing transformer working

1306


why the rotor current becomes in steady state during high slip region? please verify with equations.

1646


any one can explain the stages of a knee point which is taken during ct magnetising curve.

1399


What happen to generator if i have unbalanced load?

1742


Leakage current,un balance current which relay using for high voltage transmission?

1750






Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

2677


WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

1518


When color of silica gel will gets change from blue to pink from Top to bottom?

1195


what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

1809


WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

1498


sir i am apearing for nic exam.i dont know exam pattern.can you please send me some model papers

1585


132/6.6πš”πšŸ πšπš›πšŠπš—πšœπšπš˜πš›πš–πšŽπš› πš—πšŽπšžπšπš›πšŠπš• πš‘πšŠπšœ πš˜πš—πšŽ πšŽπšŠπš›πšπš‘ πš™πš’πš πšπšŽπšπš’πšŒπšŠπšπšŽπš. 𝙸'𝚟𝚎 πšŠπš—πš˜πšπš‘πšŽπš› πšπš›πšŠπš—πšœπšπš˜πš›πš–πšŽπš› 𝚘𝚏 6.6πš”πšŸ/415𝚟 πšŒπšŠπš— 𝙸 πšŒπš˜πš—πš—πšŽπšŒπš πš—πšŽπšžπšπš›πšŠπš• 𝚝𝚘 πšœπšŠπš–πšŽ πšŽπšŠπš›πšπš‘ πš™πš’πš 𝚊𝚜 𝚘𝚏 13/6.πš”πšŸ πšπš›πšŠπš—πšœπšπš˜πš›πš–πšŽπš›?? π™Έπš π™½πš˜.. πšƒπš‘πšŽπš— πš πš‘πš’??

661


if an insulated power and control cables of a running gas diesel gensets laid direct in an open trench i.e, trench bed is not rcc of a power house in which rain water, spillage water alwas exists and all power control cables remains submerged even when gas gensets of 480 kw each runningin on load. These power &control cables runs from power house to switchgear room through these trenches in which water remains most of the time. pl explain its merit & de-merit

1503


the problem faced on star or delta winding connection??

1581


If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

1513