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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is KWH

2 2882

How to calculate the Sizes of the cable required for one specific load? Is there any formula for that? ( EX: For 400KW load,50mtr Length, What is the LT cable Size required?)

Texmo,

2 7990

what is impedence voltage

Thermax,

1 1662

what is use of reactive power in ac ckt.

2 2990

How much should be the specific gravity of a DG set battery Electrolyte.

2 5451

what is the write prosidure of stringing of 8meter pcc pole.

1500

what is the use of expulsition protective gap in 11Kv line.

1205

How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?

1002

WHAT ARE THE BELT HORMONICS IN AC MACHINE HOW TO REDUCE IT

DRDO,

2 3248

If two induction motors A and B are identical except that the air-gap motor 'A' is 50 % greater than that of motor 'B', then

Lanco,

2 3647

A 6-pole, 50 Hz, 3-phase synchronous motor and on 8-pole, 50 Hz, 3-phase slip-ring induction motor are mechanically coupled and operate on the same 3-phase, 50 Hz supply. If they are left open-circuited, then the frequency of the voltage produced across any two slip rings would be

L&T,

2 3685

how can found motors folt current ? how can disided circuit breakers caoicity and breaking capicity ?

Omega,

1013

1. what is usage for power factor in industries?? 2.why we need to monitor power factor??

Havells,

4 5269

how do i get electrical supervisor certificate in gujrat?

DGVCL Dakshin Gujarat Vij Company, Infosys, ONGC, Orient, Reliance,

3 26260

how to work exciter in 10 MW alternator?

2 3584


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Un-Answered Questions { Electrical Engineering }

I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?

1510


why impedance relay is used for medium transmission line protection

1123


How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

724


can you plz send l&t aptitude questions if available its urgent plz plz plz

1193


How can we calculate the motor frame sizes?

2421






Readings of ER300P Trivector meter

5096


What is the main cause of magnetism?

1065


draw the full wave and half wave circuit of 3 phase system and inverter circuit used in upsĀ 

1440


What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker

1054


What is lc oscillator?

183


After synchronization with grid what is the demand value QKVAR and how we will maintain that?

1201


Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?

1051


What are the different types of LT Cables?

203


What are the material used for resistor?

156


What is the difference between single point and double point bonding. please kindly detail about bonding of cables.

1321