Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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 5984

what is the purpose of commutator in DC motor?

3 5734

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

2 4389

What is earth fault?

3 6038

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

2811

Why the transformers are rating in KVA.?

ISMT,

5 8143

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

Mahindra Water Utilities,

2 10464

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 4412

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

2179

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

SGML,

2127

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

2205

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

Trimax,

2 4478

what is timing for mccb 800A tripping?

L&T,

1 5424

What is different between hypo test and megger test

ABB,

2 11931

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

Siemens,

3650

Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

1282

How to find ampere on ht side for selection of cable size ???

1801

what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?

2311

Generator,motor and alternator Working principal Please explain easily

1473

what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?

2148

what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.

3045

a governer in an Ic engine controls the

1193

If rotor works in clock wise what happens

1910

what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

2080

What is Meter MF if External CT Ratio is 150/1 , PT Ratio is 132/110 Meter CT Ratio is 200/1 & Meter PT Ratio is 110/1

1882

how to calculate the fault in substation

2455

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

1991

How may I enrol or get admission to your program?

1911

what are the reasons of CT circuit faulty in busbar protection scheme?

1473

Please define ampere?

1123

For More Un-Answered { Electrical Engineering } Questions Click Here