Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between grounding & earthing?

9 20498

How to specific gravity of battery will check, i didnt saw any hydrometer. & say me how to dip into the battery what are the specifications are given in the hydrometer?

1 3478

What is the d/f between DOL & star delta starter & automatic star delta starter?

ACC, Dalkia, Engineering, Indeco, NINL, Novotel, RMH Control Systems, Wipro,

23 157991

What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage

Indeco,

5582

How LT megger works ?

1677

some times voltage does not built in small generators why ?

2 3549

what is the effect of power factor on DG supply,i mean to say what will the effect if we add capactors on dg supply.

HCL,

4 6869

What is the effect if power factor is above 1 or unity.

NTS,

15 45442

what is the effect if we add capacitor on DG supply, it has any loss or benefit.

6 11216

what is the difference between upper impedance and lower impedance distance relay?

Havells, Power Grid,

3 9897

whate is the meaning of balance/unbalance,in stabilizers type

TCS,

1648

what is the highest transmission voltage in india???

Bhel, EIPL, Engineering, Jindal,

49 47198

what is the application of dynamic Breaking resistor in inverter ? & How it works ?

2 6209

if 15 kv is grounding directly what will happen?

5 9094

how the works electronic energy meter?

Bhel,

1654


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Un-Answered Questions { Electrical Engineering }

what is relay what is protection & contact multiplying relays where it is used function in brief

672


I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1407


how to calculate the Neutral transformer impedance?

1820


please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com

1506


how the speed of the gets motor regulated. does it draw the same current on the all speed level.

1448






In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?

707


how to calculation increase power factor for single phase

1812


Mention what are the different colors on wires indicates?

743


How to calculate the fuel consumption for 600kva DG genset which connecting with 25%load?

1690


What are reasond for high wattage in single phase induction motors

1364


How much current will a 5 HP delta connected motor at no load will take?Is tat need a starter

6673


How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.

1406


What is the difference between Encoder and Resolver?

2876


Why derivative controller is not used in control systems?

640


WHY BREAKER ARE USED IN SUBSTATIONS?

1722