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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

if the syncronous machine run at leading pf and as its field curret increased its armature current decreased is machine operate as generator or motor?

1 1973

what are ABCD curves in MCBs and how we observe that curves?

2 4400

what is principle of DC machines?

APTransco, NTPC, Wipro,

5 8348

what is use of governer in diesle engine

Aricent,

1 3536

What is the funstion of buscoplure in LT panel? which propouse using the buscoplre

2 3025

Why using synchronising methed in DG's sets?

Juniper Networks,

1293

how to 2 phase supply from 3 phase

1 2692

over frequency is the protection of turbine or alternator?

2 3455

what are the disadvantages of leading P.F(power factor)?

2 6020

why generator is design for lagging P.F(power factor)?

BSES,

3 4806

Where to use pt and where to use CVT

2 3251

why dc is not given to transformer

4 4058

Can we use a Potential Transformer for Auxilliary Power supply( Spring charge Motor, Lighting etc)?

1 2235

Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

1246

What Factors should we consider while synchronizing two DG Sets?

Cushman Wakefield,

5 6363


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Un-Answered Questions { Electrical Engineering }

what are pilot cells

1142


For a three phase induction motor, what will be the effect on motor if the neutral of the system is shifted to say 20 deg.?

990


How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

1776


In the Variable Voltage Variable Frequency Drive, how the Voltage and Frequency varied ? Is it varied in the Inverter part of the Drive ? Please give us supporting document if any.

1084


what is the difference between fault current ant short circuit current?

1779






How can i calculate the Breaking capacity of molded case circuit breaker, is the breaking capacity of CB for Diesel generator shall be less than grid supply's breaker ?

1218


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.

218


what will happen if ac and dc supplies given

1220


What is meant by celling voltage & current in excitor ?

1127


Mention what are the different colors on wires indicates?

257


what is transient stability analysis means?

1148


i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com

1081


Which type of motor is used in trains, what is the rating of supply used explain working principal?

214


how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)

1053


what are the condition that makes hooter blow?

1390