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  • 8/6/2019 Nae Em 1

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    Questions of Instrumentation

    LAL PIR Thermal Power Station Question

    1. Thermocouple----------- Materials2.

    RTD, Why we used the RTD instead of thermocouple.3. Wet-leg Phenomena.

    4. Installing drawing of WET & DRY leg.5. DP Cell.6. Explain with diagram three element Control loop.7. Smart transmitter Programming Procedure.8. Burning sequence of igniters.9. in cause of false startup of turbine, then Oil will be drain from where.10.Compensation of Thermocouples.11.Cold & Hot junction.12.Can a DP cell can used as pressure & level Transmitter.13.

    Valve Positioner.14.in put signal acts on which part of a pneumatic Signal.

    15.Gland packing in cause of Steam.16.Blow down in cause of psv.17.BFW valve Fail safe condition.18.did Teflon packing needs lubricants.19.Units of Proportional Controller.20.Integral Units.21.Is three element loop is feed forward.22.Feed forward & Feed back Control loop.23.Which is MASTER in casecade Control system in Boiler.24.Isolation of maine fold.25.In cause of moisture will there be any difference in vibration reading.26.How many relays are there in gas turbine of speed system.27.What is I.G.V. in gas turbine.28.Compressors bleed valves function in gas turbine.29.96 CD & 96 FG relays function in gas turbine.30.At which speed the diesel engine change over in gas turbine.31.Speed of gas turbine in normal condition.32.Flame best quality Condition.33.Transmitter output.34.Temperature measuring instruments.35.PT-10 & PT-100 difference.

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    Questions of Instrumentation

    Lasmo Oil Pakistan Question

    1. Compressors (VT, XT installation)2. XT, VT Graph (Volts to mils)3.

    Speed working Principle.4. Types of speed probe.

    5. Compressors anti Surge loop (Working)6. I / H Convertors.7. Types of Control valves.8. What is CV.9. DCS Working (loop, flow diagram)10.PLC (Programming, Ledder logic)11.Relays & Gate Logic.12.Thermocouple, RTD (2 wire, 3 wire principle)13.Gas turbines Working14.

    Level Switches15.Furnace Operation

    16.Fire Fighting Training17.Work permit procedure18.Fire Types19.Intrincically Safety.

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    Questions of Instrumentation

    Fauji Fertilizer Company Questions

    1. What is the supply of logic hooter?2. What will tripping if K-421speed control open?3. K-421 if trip then in field RESETor only MCR.4. TK-421 how many out board bearing VT?5. How many # of teeth in speed system of K421?6. Difference b/w MOS &POS7. Bailey chart how many speed in one hour?8. What is the T/X diaphragm isolation?9. What checks of fluids in T/X?10.What happened when open the local indicator of T/X?11.When diaphragm of T/X mount upper side of sensing, then use kit? [ELEV,SUPR]12.In control v/v what is feedback device?13.ATC Valves binch set will be [10.6,14.2,3.2]14.Lock up relay use ,what happened when air fails?15.When we use trip relay?16.ATC v/v when coupling dismental how & where apply the signal?17.What is the function of spring in P.O.P actuator?18.What is normal Hor /Ver relay close or open?19.On Teflon coupling on gas line what use type of lubricants?20.How use tee cage in angle v/v if input is below?21.What shows v/v 60,70,90 ?22.VT & XT gap voltage at adjusting time?23.If proximity shows ljess then what will work?24.Probe & Extension cable resistance?25.What is difference b/w P.B & GAIN?26.SPEC 200 P/S use 110,220,24 ?

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    Questions of Instrumentation

    Qatar Gas Petrolium Company Question