Interview Questions _ Power System

Interview Questions | Power Systemhttp://powersystem.in/?page_id=20 Home Books Electrical Videos GATE Electrical Jobs Experiences Interview Questions Contact Us Power System …..Exploring Electrical Engineering Sep 04 Interview Questions by admin Electrical Engineering Interview Questions (Power System) Electrical Design Engineering, Hydro Power, Thermal Power Station Questions, Switchyard 220kV/ 400kV/ 765 kV, Substation Questions 1. HTC Interview: (as told by RS) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 1 of 8 Preparation of DPR, How dimension are made for generator. Favorite BOP item. Ring / Bus topography in SCADA SCR and its value ? What to specify in Generator Transformer tender ? Transformer Losses Penalty ? Specifications (415 Switchgear) What u did in different projects? Tell about your current Team in Company. How work is done (Special Team or Project wise) in your company ? 3/1/2012 7:01 PM UP) 1. 5. 12. 13. 4. 16.in/?page_id=20 11. Layout of switchyard 2. 15. 7. Clearances for different Voltages 132/220/400kV Sectional Equipment Earth 1. you post your cv on website? About tender floating process ? What was your involvement during pre-bid meeting etc. 8. Ratio of REF CT ? Why single phase transformer is used ? 3. 2. Schemes of Bas bars – CBIP : Main and Transfer BB Explanation SS Equipments LA Rating Why less than rated V ? : Fault level 40 kA. Voith (Telephonic Interview as told by RS) 1.Interview Questions | Power System http://powersystem. 4. SLD – Any Hydro Electric Plant. 14. 6. Expected Package ? Why HTC? How u come to know us? Why in short span of time. 2. 2. Alstom (As told by RS. Transformer specification / Datasheet Tx. Protection WTI OTI 2 of 8 3/1/2012 7:01 PM . Current rating Breaker : Types and ratings — CBIP Disconnector Switch / Isolator Post Insulator Civil Structures Foundations Stool 9. Auto-Transformer: Function and why used ? 3. 3. 3. Tell me about vector group Ynd11 what it’s technical mean ? Protection of GT ? Differential and REF. in/?page_id=20 - Buckohles Transformer Oil Functions : Cooling. By flow chart of IEEE 80 Rg <1 ohm Conductor spacing Touch V. 3. Trip Ckt Healthy. Protection Angles : CBIP Rolling square Method 6. Transformer. Distance Protection. Insulation between Windings Tea Break (Upto this 1hr) 1. 2. step v Earthing rod : dia. Softwares Used 3 of 8 3/1/2012 7:01 PM . SLD Full Protection from Gen. CBIP. Earthing : Start IEE-80. EF. UV) REF settings 5.Rangit) Mast or Shield Wires Methods : Mousa and Rizvig Method Protection Area (Cone). BB : Full SLD of HPP. IS 3043. Lightning (RIL. Relay Setting (OC. length Optimise the worst condition by these various standards. C & R Panel Relaying Scheme : Diffential Protection. What u have done…Tell.Interview Questions | Power System http://powersystem. Bus Bar Types: Rigit and Flexible ACSR AAC Al Pipe 4. Line. OV. PT Code IVT CVT Dry Fuse 11kV 11.Interview Questions | Power System http://powersystem. Ganttary Wind Loading Ice Loading 4 of 8 3/1/2012 7:01 PM . Synchronising DG sets System 12. CT Code Core Class PS.5. 0. Battery Calculation IEEE845 9.in/?page_id=20 - AutoCad Etap Earthing VB++ Mobile Software 7. Capacitor Panel Pf Improvement Function Reactive Power injection 8.2 VA Burden 10. 0. then what will be the voltage level there and it is less. If we have a 400kV of 400 km ? if line a another end is not connected to grid. CPRI. Power f withstand and dynamic rating will changes 15. what will be its characteristics impedance? Q4. so the pressure and dielectric strength. Then HR and other discussion Teaching. so Temperature will reduces. then how much ? what to do to remove that effect ? which element we connect in line and where ? 5. Cables 11kV 220kV FRLA Cable testing: HV test. BOP. HVDC Studied? Q2. Tower Height – CBIP 400 kV (17+8) 220kV 14. Factor affecting at High Elevation Air dielectric strength becomes less. What electrical parameters you will think. Any work done in Life with full enthusiasm. 4. Bangalore (As told by RS) Q1. IR test and outer area/sheath of cable stretch A 3m piece of cable is put in fire for testing FRLS. Corona Loss Will be less in Pipe conductor 16. If we have 1050 MW to transmit from 1 substation to another. Do u know about Power Evacuation? Q3.in/?page_id=20 13. If we have a 440 kV line of 400km. Q4.Interview Questions | Power System http://powersystem. Technical Finish. ABB (As told by AS) 5 of 8 3/1/2012 7:01 PM . Switching voltage Q: 15/ 18 or 8/10 or 9/10 MVA Transformer. Cooling.Moose / Zebra 6 of 8 3/1/2012 7:01 PM . Vs.5 kV Q: Why for 220kV system LA used is of less rating ? Q: For 220 kV which conductor is used ? . Vector Diagram. 220kV. Vp.220kV 40kA . 400kV ? .132kV 31.in/?page_id=20 Q: BOP Work Experience ? Q: Difference in Tendering and DE ? Q: Master in which field of Layout / System Engineering ? Q: Which Layour You Make ? – Upto 220kV Double Bus. Q: 433V why this voltage ? Q: Winding Temperature of Transformer ? Q: Oil Temrperature of transformer ? Q: Vector diagram which you used : – DYn11 step up – Ynd11 Stepdown Q: % impedance of Transformer Value ? IS-2026 Q: Earthing.R <1.0 ohm Q: Fault Current for 132kV. Generally we take 20 % difference in two ratings. Q: How equipments are arranged in substation ? Q: List of Equipments in Switchyard ? Q: Power Transformer Parameters ? MVA. What we CAlsulate ? . Q: Difference between ONAN and ONAF. Temperature. so 8/10 is best. Insulation.Interview Questions | Power System http://powersystem. What are these two ratings ? and which is best ? Ans. Fault Model – Calculations ? Q6. Faults Ph-Ph. What is fault current ? Q2. Switchyard SLD Q5. Electrical Design Hydro (As told by RS) Q1. Current. Define Synchronizing ? Q9. Temp. cross-section Q: V Drop Formula for Cable ? Motor delta-star are: DOL : 6 times Star-Delta: 3 times Q: Full Form of ACSR and AAC Q: Notice Period 6. CB) Q13. Two Generators are connected to common bus then a common transforemer having all necessary details. Length of Cable. CB GTP ? Q12.Voltage. Ph-G. V drop. Ph-E ? Q10. GTP Main Parameters (Xer . Firm Power Q2. Hrdels in Hydro Power Plant ? 7 of 8 3/1/2012 7:01 PM . Type of arrangement. CAble Sizing and Calculations ? Q7.Interview Questions | Power System http://powersystem. what will be fault current ? 7.Explain ? Q8.. Touch & Step Voltages Definations ? Q4. Electrical Design (As told by HT) Q1.in/?page_id=20 Q: Cable Sizing Parameters ? . % Z in Transformer . Earthing Design steps ? Q3. Sectionsal Clearances ? Q11. Min. If fault occurs at bus. Power Formula in Hydro ? Q3. See ya around! Recent Posts Distance Education Recognition Power System India © Copyright Power System India 2010. How capacity is decided for Hydro Power Plant ? Q5.Interview Questions | Power System http://powersystem.in/?page_id=20 Q4. | Powered by Wordpress | Designed by ThemesGuy 8 of 8 3/1/2012 7:01 PM . 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