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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

if our load in 3 phase circuit is 4000 amp. calculate the capacity of capacitor panel if line power factor is.80 .

ST Micro,

1 4160

 where the Motorized mccb to be used? In Motor control center panel starters ,it is use full. please answer  

Voltas,

1 4814

What are reasond for high wattage in single phase induction motors

1890

why we use 50 hz frequency in india .. why not 60 hz 

3 6445

Arrangement of earthing materials.like what we put first charcol,then salt.then plate. Plz answer me about that.

1 2780

What is rccb?

1 4844

what happends when an isolater is operated on on-load

1 4577

in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses?  the second question is-generation is depends on LV winding? or LV winding design for generation voltage?

1740

why current is constant on d.c?

2090

what will happen if frequency is below 50 hz?

Student,

2028

distribution transformer de-rating formula on over limit iron losses  

IESCO,

2304

if a train is running on a speed of 40 K MPH and crosses a individual passing by him in 48 secs who is riding a horse with a speed of 25 K MPH. what is the length of the train?

2 4204

in a delta-star with neutral grounding on star side what will happen if one star limb  got opened at star point

NTPC,

1 5019

what is power factor?

3 6448

Why we are using LA Rating 10kA in 66 kv substation

L&T, NMDC,

1 7275


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

71ohm,111ohm,95ohm,179ohm in calculate the total ohm in series circuit

1682


for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

1481


why industry prefer ht motor instead of lt motor.

2125


how does the terminal voltage of transmission lines increase when a capacitor is connected???? This happens not only in transmission lines but also in all circuits. How??? When a capacitor is connected in a transmission line, capacitor also takes energy from the same supply. But how is it able to increase the terminal voltage??? Practically What sequence of events happen during increase in voltage???

2177


How to calculate energy stored in a capacitance

1168


Grid fault level [KA]?

2610


ratings of lightning arrester

2047


what is the role of transistor in Circuit?

1189


why is using sensor?what is differece between photoelectric and proxmitty?

2004


For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

1216


what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

2080


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

1958


What is Phase margin?

1102


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


what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?

1962