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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Why induction motor can not be operated at synchronous speed?? what would happen if it is operated at synchronous speed??

5 25531

can we coorect P.F. OF 320 KVA ALTERNATOR AT LOCAL SITE WITH RATED .8 PF LAGGING.

1 3337

sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

L&T,

5 12613

what can be the causes of capacitor start motor having a higher current that its actual

1933

How to calculate per unit impedance of transformer?

2140

Why the output of generator varies eventhough the shaft speed is constant in thermal power plant?

5 7221

what is meant by phase transformation ratio in induction motors?

2 15110

why generator one end side star neutral point given? if this point not given what happen?

1 4002

what happen if turbine trip ,g.c.b not open and excitation on condition?

1 5090

what happen if steam turbine trip,g.c.b not open and excitation off and on condition?

1 4224

why capacitor is not discharged phase to body

1 3462

Why the electron flow in reverse of current.

6 9339

What is the function of an Auto reclosure relay. How does it work??

KSEB,

4 18229

What is EHT tariff or Power factor Tariff ????

KSEB,

2308

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

SISL,

1937

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Un-Answered Questions { Electrical Engineering }

What is the minimum underground tank size capacity considered for firefighting purpose?

1911

How select ELCB for 32amp. socket having quantity 12Nos. We have to do this wiring in PLANT. Please Also explain the incoming cable specification.

1831

how to fit 3 HP crompton gear motor with conveyor with the use of staring delta starter or ordinary starter?

1969

How will polarity test of Dy5 Transformer ?

2221

What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva

2168

1. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be

1865

What does the term supermesh means?

1146

WHY NUTRAL GROUND SYSTEM USED IN 33KV SYSTEM

2179

How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

2185

What is BusBar integrity test and how it is conducted?

2183

How do we arrive at selecting reactive capacitance value as 30% of h.p rating of motor?

1795

How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.

5343

why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

2117

List examples of current sources?

1066

Differentiate between Zero and Negative sequence current

1873

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