Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is Lockout Relay and what is use of it in electrical installation

1 3062

Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

1233

What is the Surge for 1.1 Phase Induction Motor(For Eg.1Hp) 2.3 Phase Induction Motor(For Eg.1Hp) 3.AirConditioner(For Eg 1Ton) 4.Refrigerator(For Eg 180Ltr or 160kW) 5.Induction Cooker 4. Ceiling Fan

1599

What is the purpose of SOTF being used inspite of distance Protection given?

Alstom,

7 46948

what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?

1470

why in generating station generation voltage is 11 kv

L&T, Usha Martin,

1 4384

What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?

ABC, Reliance Life Sciences, TCS,

1855

we have 3 phase 4 wire supply 230/415 V.AC and our distribution is single phase or we have all single phase 220 v,ac operated appliances. and noted the current with help of clamp meter Red to N = 20 Amps. Yellow to N = 45Amps and Blue to N = 30 Amps ( total is 95 Amps ) what will be neutral current on the main .

ABC,

1 4546

What is mimimum di -electric strength value for 33 KV transformer OLTC oil

Franke Faber,

1537

KVA transformer of different frequencies of 50hz,100hz,500hz&1000hz. which one of these transformer has big size? Give reason

Suzlon,

4 6542

what is cogging and crawling

Suzlon,

1988

what are the stresses in circuit breakers ?

1490

What is mean A32 B32 C32 D32 in mcb(miniature circuit breaker)

2 43049

Is there any relation between transformer capacity and its bdv?

1 2573

how many BUSBAR is in electrical system?

3 4660


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Un-Answered Questions { Electrical Engineering }

how to calculate fault level?

1627


a simple c++ program to calculate simple interst with its data members as private

1364


what is meaning of bus riser

1918


what is counter poise conductors

1646


define the non synchoronism of synchoronous machine in general g or m??

1425






how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?

1377


What is the resonant peak?

617


Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?

1299


what is formula to cal cute earth pit numbers and size of earth strip used in earthing?

1769


I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.

1729


Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

2202


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???

1591


how can i use REF and diffrencial relay both in 1 CT core for transformer protection?

1346


block diagram of 2 ups system connected in parallel mode?

1605


How to calculate the electrical load for a standard telecom BTS shelter and choose the DG set capacity for the same load?

2624