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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the location of lighting switch of battery room

1 3530

how many percent setting of motor over load relay of its full load current

6 11653

i want to do a project on PLC.... please give me an idea.....

1 2645

what is the diff b/w HP and KW

10 10638

how many amps in 1KVA?


16 91987

how to amps calculate from 1KVA?

11 24805

what is meant by earth fault and how it happens....

3 31084

what ll happen to current if two phases get short circuited


2 8169

how many amps in 1 KVA? V=440v, PF=0.8 and FREQ=50Hz

22 33551

A three phase load, around 4 km away from the 11/0.433KV distribution transformer (Neutral of Transformer is solidily earthed) and consisting of mainly very costly and sensitive electronic equipments is giving trouble due to high voltage difference between neutral and body earth. Whether this problem can addressed by connecting neutral at the load point solidly to earth?

3 3904

On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.

9 16258

Is it posssible to obtain the higher speed(3000rpm) for adiferentiallly cascaded induction motors(with 8 and 6 poles)

3 2810

what deffrence between KW $ KVA ?

7 6594

why transformer rated in KVA not in KW ? we know that W= v*i

6 6098

What do you mean by Frame 5 Gas Turbine as well as Mark II.


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Un-Answered Questions { Electrical Engineering }

what is meant by flywheel and its role in retardation test


How to calculate ant test the burden of Current transformer


how can we find thae value of capacitor for single phase motor. what is difference between starting capacitor and running capacitor.


can anybody send me syllabus of rrb section engg (electrical). and also send previous question pepar...


Phase control and integral control are used for?


What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw


if we apply 1000ADC instead of 100ADC or We apply 50ADC instead of 100ADC,What will be happened in the test result value.Pl explain


What are the basic elements used for modeling mechanical translational system?


IN dc capacitive reactance is??


What are the advantages & disadvantages of a group electrive drive?


What is the types of HT motor testing


If I bring a basic electric meter from the States and hook it up in Costa Rica in a development that has only one transformer for the 50 homes, will it still be accurate regarding the usage of kilowatt hours?


how to determine motor size for a fan application?


How to Design green buildings services? What is the advantage to design green building?


How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.