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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

1865

If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?

Kirloskar,

2226

How to conduct a Hipot test on a 11KV cable?

2 21876

in ct secondary one terminal is connected to earth why?

1 2867

what is Different between Bilinear and Unilenier?

ABB,

2159

why Transformer and DG rating capacity is in KVA

ACC,

4 11626

what is the effect of vector group while phase sequence of a generator changes,whether the vector group changes or not

2101

which type of motor we are using in local train???

Asia MotorWorks AMW,

4 11515

What it the purpose of parallel phasing transfomers??

Asia MotorWorks AMW,

1991

Why the suply frequency in INDIA is 50HZ

HCL,

2 5261

What is the power ratio between power in Star and Delta circuit?

3 4909

What is the difference between earth and neutral

3 6748

What is the difference between Earthing & grounding

4 8733

Why the suply frequency in INDIA is 50HZ

HCL,

5 9081

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2196

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Un-Answered Questions { Electrical Engineering }

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

5637

Why can't we parallel the secondary circuits of two voltage transformers?

1530

1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4870

What is the difference between the transmission line and distribution line?

1165

how is calculated the quantity of weight in hot test xlpe?

2514

cc of scorpio?

2280

What is the Nyquist criterion regarding control systems?

1089

Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2586

what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

2286

Why GRR starts from 60% of motor speed why not less than 60%?

1702

HOW TO REDUCE POWER PLANT AUXILIARY POWER CONSUMPTION?

3416

how to check ac servo motor

2273

What is control system?

1207

How does the phase sequence controller works, how it identifies the phases? confirm working principle

2105

how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

2111

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