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 does an induction motor start?

Ericsson,

1217

What is the difference between a Root Locus plot and a Bode plot?

GE,

1276

What is DC series motor?

Ericsson,

1272

How is the speed of a DC shunt motor related to the armature current?

GE,

1183

What is the armature mmf in a D.C machine?

HPCL,

1239

fuel-air ratio in a petrol engine fitted with suction carburettor,operating with dirty air filter as compared to clean filter will be

NIC,

1063

For a stable system, where should the poles of a system be in a root loci plot?

GE,

1230

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

Ittiam Systems,

1235

Classify driling machines.

Essar,

1115

What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

HPCL,

1097

A Question Like A Wire Is Wound Whose Resistance Is Some 132. 44647 Ohms. If A Voltage Of 30 mv, 296 Ma Current Is Applied To It What Is The Resistance.

TCS,

1065

Give some differences between open loop and closed loop?

Ericsson,

1106

What does Bode plot tell you?

Ericsson,

1398

What is the role of feedback in a closed loop control system?

GE,

1082

What is a DC series motor?

Ericsson,

1239

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Un-Answered Questions { Electrical Engineering }

Define de-sensitivity?

1127

What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.

2364

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?

2226

What is genrally the % Impedance of a Dg set? How can we calculate Earthing conductor size for a DG set?

4032

How will polarity test of Dy5 Transformer ?

2269

For R-L or R-C ckt,time constant formula is L/R and RC respectively and its unit is in sec.Pls tell me the derivation

3284

internally connection of photvoltic module

1925

If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer

2708

Electrical Engineering

2065

what is acceptable leakage current for 33kv cable while doing high voltage test for cable? how to calaulate the leakage current for 33kv or any rated cable?

4036

To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors

1977

why h parameter are called as hybrid parameter?

1974

HOW TO CALCULATE HV TEST VOLTAGE FOR ELECTRICAL EQPT.

2217

IF TVM OF TRANSFORMER SHOWS POWER FACTOR ON 33 KV SIDE AS 0.97 LAGGING AND ON 132 KV SIDE IS 0.75 LEADING.IS THIS CORRECT.WHERE IS PROBLEM.

2365

why on axial hitting up of air blast on hydrogen produced in oil circuit breaker,temperature rises of the core of the arc?

1964

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