Electrical Engineering Interview Questions
Questions Answers Views Company eMail

How to calculate KW what is the formula for KW.

Toyota, UU,

18 22776

What is the d/f b/w MCCB & MCB

ABC, LMN,

6 14760

what kvrah y we need to take the readind of that

715




What type of tranformer generaly at soft wares like capacity 2000 kva 1800 kva etc iam confused it CT or PT OR distribution tranformer

3 2937

What is the use of conservater, bucchos relay, breather in a transformer?

Wipro, Bosch, Zadco,

8 20101

Can we use the 60 HZ transformer/rectifier/Motors/Coils in 50 HZ? if not so, why?

3 4435

why contactor not provided between output of VFD and motor?

Siemens,

6 13896

what is pressure relief valve?where it is used????

Mecon,

4 32306




DIFFERENCE BETWEEN POWER AND CONTROL CABLES

NCC,

9 30489

What is the megger value for ht

Electrical,

16 62611

what is derated current of power cable & what is formule to find derated current?

Thermon,

1 10617

what are cable earthing and bus earthing trucks?when and where they are used?

1 5248

in three pin pluge there three pins one is phase and second is earth third is nutral why nutral high diameter compare with phase and earth

Radiant,

10 12219

What is the diffrence between an ELCB(earth leakage circuit breaker) and RCCB(residual current circuit breaker)?which has higher degree of safety and why?

2 5668

what is the function of breather in a transformer

Areva, Bhel, Vijai Electricals, RKM Powergen,

29 90051


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Un-Answered Questions { Electrical Engineering }

If I want to connect a capacitor bank on the HT side of a 11kV/415V, 3 phase delta-star distribution transformer to supply Reactive power to it..what practical specifications of a Capacitor bank that can i've??please reply..

988


what is the preventive maintence for ht panels and busbars and vcb abd acb's.

1068


Advantages/Disadvantages of earthing of neutral bus on MSB instead of separate neutral earthing for transformer/DG sets feeding to MSB

1322


What is the meaning of C1, C61, C91 cable

372


whati s the sludge current in ups

907






I WANT BHEL PREVIOUS QUESTION

1061


why we are not giving the zone 1 trip command to the master trip relay

189


why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!

627


Hi Friend I am used multimeter to measure the voltage between R Phase(SS1) to R Phase(SS2). In SS1 is connected with UPS loads. But I am getting voltage between these 2 R Phases. Please give some idea friend

687


how to calculate slip ring induction motor stator and rotor currents??

785


why and where we use early make & late break contacts in protection?

5782


what is vA rating and class of a ct.

643


In Power Line Communication (PLC) the wave trap is used to block communication signals from entering neighboring lines. My question is this: Why do they allow for different filtering arrangements on these wave traps? Isn't it always going to be a low pass filter since we want the power frequency to go through, and the comm signal blocked?

680


Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?

759


Graphs of measuring power and speed on dc motor

680