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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

difference between ac motor and dc motor

5 20077

why aggregate is placed all around substation ground.

9 15150

whats is MARX CIRCUIT?

1 10386

What are the earth resistance Standards of 66kv sub stations according to indian norms.

2 4397

what will happen when a bulb s connected btwn two phases of a three phase delta connected source?

6 9683

why ac supply neutral should earth not in dc (-)

2 6714

Which Kind of machines(in terms of poles) give the smoothest DC

1983

Which type of gas used in cylinder (VCB)?????

ICSA,

15 24811

If I want to use capacitor banks at HT (11 KV) side for maintaining power factor then which type of capacitor should I use? Plz give me the specification?? (I am using 1250 Kva transformer (11 KV/433V)).

2 10677

how to calculate lux level in out door (yard lighting) please expalin with a example

IVRCL,

1 6055

What is the major difference between cnc and plc. why cant we use plc instead of cnc

5 38521

What is difference between ball screw and lead screw.

2 9502

selection of conductor in different voltage?

TATA,

1 3537

What is the most accurate way of testing ELCB?ELCB is better than RCD?

GECO,

3330

what is MFD value in capacitor?I have 201 Kva load & reactive power is 150 Kvar. so how it is calculated?

IIT,

2 9406

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Un-Answered Questions { Electrical Engineering }

In single phase capacitor motor, if the motor rotate reverse direction then how much power will be consumed by the motor and why?

1984

If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

2283

how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?

2032

Define resonant frequency?

1210

How can I model an open-delta ground transformer for a network supplied by 4 unit GTG and power transformer in ETAP?

13762

what is PID control in VFD drives?

1999

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

2263

why power not passes in plastic and rubber material

1970

what do you mean by every IC 74 first digit.why are you using this no.why not using another no.

1900

How to operate a ac chilar plant?

2484

what is the difference between electrical and electronic choke?

1966

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

1679

We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

1525

sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

1895

what is the relation between size of the anteena and wavelenghth of radiated wave

2177

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