Electrical Engineering Interview Questions
Questions Answers Views Company eMail

what is the location of lighting switch of battery room

1 2804

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

6 9201

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

1 1987

what is the diff b/w HP and KW

10 7540

how many amps in 1KVA?


16 79625

how to amps calculate from 1KVA?

11 18808

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

3 26683

what ll happen to current if two phases get short circuited


2 6315

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

22 26654

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 2820

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 12970

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

3 1813

what deffrence between KW $ KVA ?

7 5092

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

6 4382

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


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

What the formula for calculating no.of earthings & size of earth strip for 100mX90m shop.


What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?


what is meant by motor startup supervision & motor load jam protection ?


what is meant by neutral compensation factor and where it is used


The loads are connected with phase and ground then why current flow as the loads ?


from generating station If 400v LT line length is 1000m how much voltage is drop and how do i calculate it? which cable will be use for this line?


what is active power & reactive power?


When we giving the 3 phase supply to ups system how to coming netural?


what is static frequency converter?what is the function...of sfc...?


What's the difference between non break power supply and non break non short break power supply


what is meaning of bus riser


wat system call?


what kinds of Transformer oil grade is better for power transformer ?


y we use neutral,all r told its used to for closed path..k its a just used to closed path,in a transmission line y we put same conductor used n both phase and neutral..if we use less than phase conductor in neutral mean we ll reduce cost its right r wrong..if we use mean any problem occur in transmission line..


What is lifting power for 1 wb/m2 and 1 A magnet?