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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

If we want to change a contactor of faulty one what are the conditions want to fullfil

Qatar Shell,

2001

A 11 KV motor is working. if the supplay is fail. what will happened with it's breaker? Trip / remain the same condition?

4 7085

A 6.6 KV motor breaker is try to Drack OUT by me while the motor running. What will Happened? a, will Trip. b,Drack Out lever will not access c, will get shock d, noting will happened

4 7515

If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

1902

Why the motor take high starting current for long time(10- 15 sec) which is connected to Blower as compaire with a motor which is connected with pump with same rating?

2 4950

Why a motor blower cobination draw more current at winter than summer?

1 3944

in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?

2285

what is the different between RCCB & ELCB

3 7757

why HT motors are earthed only at equipment side & for it's single core cable with aluminium wire armoure using?

Legrand, NLC Neyveli Lignite Corporation Limited,

1 4314

why Batteries & Battery chargers are used in substation? what is the different between UPS & battery charger?

DLF,

4 52773

In the case of petrochemical area AC drive & AC motor is used where the speed variation is required. Why they are not Using DC drive & DC motors in such areas?

1 4280

which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?

2189

what is the minimum (Common factor) insulatin resistance of the following a, 4mm sq wire b, cable from 50 mm sq to 800mm sq

2109

what is power plant?

2 5213

What is difference between incomer & outgoing type Vaccum Circuit Breaker?

VBG,

2 19783


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

what parameters are should nessary for control technic dc drive(in rolling mills)?

2002


What happen to generator if i have unbalanced load?

2110


sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

2964


what is the difference between droop mode and ischnorous mode in thermal powerplant?

2666


induction 3 phase motor terminal connection

2674


Readings of ER300P Trivector meter

6425


What is the types of HT motor testing

3592


How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

1810


Which standard we are following earthing resistance test

1418


what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..

2042


what is the difference b/w ATS and HTS?

2188


In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

1716


what is load despatching

2235


What is a difference between indoor transformer and outdoor transformer of same rating

5831


Distribution transformer we provided 2 separate earthing pit for Body and 2 separate earthing pit for neutral,we can not connect separate body earthing pit to other earthing pit but we do metal glanding in secondary side cable termination in both side, transformer and PCC panel (LT Panel), is this safe for transformer and other equipment?

1734