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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how to calculate size of cable from motor current given and how to calculate full load current of a induction motor.

Aarti Steels,

3 3398

what is the purpose of commutator in DC motor?

3 3068

Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?

2 2475

What is earth fault?

3 3566

What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?

1777

Why the transformers are rating in KVA.?

ISMT,

5 5135

for star delta connection,,why the contactor star not burn,when red,yellow and blue cable is looping.

Mahindra Water Utilities,

2 8150

1) Why distributiion system decided 11 kv, 33 kv, 66 kv, 132 kv, 220 kv, 400 kv, 2) In 3 Phase line terminal of capacitor, why used for power factor improvement. 3) Why used rating KVA in transformer?

1 3041

what is negative and zero impedance in 3 phase induction motor ??

1009

Why the magneti fields are not passes from southpole to north pole

SGML,

1185

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

1181

what is mean Boost voltage and what is working principle of Tube light

Trimax,

2 2508

what is timing for mccb 800A tripping?

L&T,

1 4050

What is different between hypo test and megger test

ABB,

2 9444

how much leakage current is allowed in MC61A L&T make relay?

Siemens,

2627


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Un-Answered Questions { Electrical Engineering }

what exactly commisioning work does in electrical site work... LT side?..

1028


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?

983


What is the difference between earthing,ground&nutral?

4532


at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

880


why does rotor rotets?

1553






How LT megger works ?

1025


Difference between field rheostat and armature rheostat.

172


What is q factor?

176


PLZ sent the previous year question paper for GET in NHPC on my EMail id ppshanker@gmail.com

4361


why 1.7Uo for HV cable Hi pot test?IE standard why?

1339


hai...... tis is Hemanth. jst now completed electrical engineering... i wanna to apper for ap tranco exam... plzz send me the previous q's paper link......thanx in advance.

1112


How to design the NGR Resistance

1125


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

1011


what is the effect of change in supply frequency on load angle of synchronous motor,all other parameters remaining same?

1445


should %impedance be high or low in a power transformer? if so why?

1016