Power Plant Guruji

Boiler Operation Engineer Previous year Questions With Answer Set - 14 Question 1.Which one is a Boiler Mounting A. Economiser B. Super heater C. Re-heater D. Boiler drum safety valve Ans. D Question 2.Classifier is a part of A. Coal mill B. Coal feeder C. Coal bunker D. None of the above Ans. A Question 3.Thermal Power Plant works on A. Carnot Cycle B. Rankine Cycle C. Modified Rankine Cycle D. None of the above Ans. C Question 4.Modern utility boilers are supported at the top and are hanging type. It is to ___________ A. Keep vertical B. Allow free expansion C. Restrict expansion D. None Ans. B Question 5.Residual Life / Remnant Life Assessment ( RLA ) of boiler is carried out as per IBR 1950 Regulation ______________ A. 380 B. 391A C. 320 D. None of the above Ans. B Question 6.Atomizing of HFO in burners is carried out through A. Compressed Air B. Steam C. Flue gas D. Pure oxygen Ans. B Question 7.On load cleaning of water wall tube surface is carried out by A. Wall de-slaggers B. L...

Boiler Operation Engineer Previous year Questions With Answer Set - 13 Question 1.Excess penetration is a term used to describe A. Destructive testing of weld B. Defect in weld joint C. Holes in serration pads in ESP D. All of the above Ans. B Question 2.Which of the following liquid fuels has more viscosity A. Naphtha B. Light Diesel oil C. High speed Diesel D. Heavy fuel oil Ans. D Question 3.In water walls of modem utility boiler, water flows from A. Top to bottom B. Bottom to top C. Horizontally D. Can be any one of the above Ans. B Question 4.Dissolved oxygen from feed water is removed in A. Boiler Drum B. Low pressure heaters C. High pressure healers D. De-aerator Ans. D Question 5.Which equipment of power plant uses Sector plates? A. Primary air fans B. Scrapper conveyor C. Air pre-heater D Main Turbine Ans. C Question 6.Air leakage is normally more in A. Tubular air preheater B. Rotary air preheater C. Same in both D. None of the above Ans. B Question 7.HP dozing in power plant ...

Boiler Operation Engineer Previous year Questions With Answer Set - 12 Question 1. Secondary air in a pulverised fuel boiler is used to: A. Carry pulverised coal to the burners B. Assist in complete combustion of fuel C. Clean the boiler walls D. Carry mill reject to reject coal bunkers Ans. B Question 2. What is sorbent in FBC ? A. Sand B. Ash C. Lime Stone D. All of the above Ans. C Question 3. Which type of raw coal feeder gives accurate reading for mill loading in T/hour ? A. Volumetric feeder B. Gravimetric feeder C. Rotary feeder D. All of the above Ans. B Question 4. LRSB’s are used to remove ash deposits from A. Water walls B. Re-heaters C. Economiser hoppers D. ESP hoppers Ans. B Question 5. Which of the following safety valve in power plant uses Superior quality metallurgy A. Drum B. Cold Re-heat C. Main Steam D. De-aerator Ans. C Question 6. In a pulverised fuel boiler, the ash collection A. In bottom ash hopper is more than ESP B. In ESP hoppers more than bottom Ash hopper ...

Boiler Operation Engineer Previous year Questions With Answer Set - 11 Question 1. Blowdown of a boiler controls A. pH of feed water B. Alkalinity of feed water C. Hardness of Feed Water D. TDS of feed water Ans. D Question 2. Preservation of boiler is required A. When boiler is not used for longer duration B. During annual shutdown C. After continuous operation of boiler for five years D. At least twice in its life period Ans. A Question 3. The material used to control SOx in the FBC boiler is ………… A. limestone B. Silica C. Alumina D. Lime Ans. A Question 4. Which of those fuels has the highest heating value? A. Methane B. Hydrogen C. Diesel D. LPG Ans. B Question 5. To regulate and control the flow ……. Types of valves are normally used. A. Ball valves B. Gate valves C. Globe valves D. Swing check valves Ans. C Question 6. The latent heat of the steam at atmospheric pressure is ………… A. 1875 KJ/kg B. 2257KJ/kg C. 860KJ/kg D. 539KJ/kg Ans. B Question 7. A boiler is generating saturated ...

Question 1. Bed slumping is done in AFBC Boiler to A. Reduce Pressure B. Reduce temperature C. Reduce load D. Maintain bed temperature Ans. C Question 2. Mobrey switch is used to A. Control drum level B. Control fuel flow C. Control air flow D. Control fan speed Ans. A Question 3. Scoop tube control is used in feed pump to A. Control Vibration B. Current measurement C. Control PH of feed water D. Control drum level Ans. D Question 4. For easy storage of bagasse A. Bagasse is air dried B. Baling is done C. Bagasse is washed D. Water is sprayed Ans. B Question 5. Oil burner is used in Pulverised boiler to – A. To reduce soot formation B. To reduce coal consumption C. Stabilise the flame during low load and provide ignition energy during start up D. To increase reheat steam temperature Ans. C Question 6. Air vent is provided at boiler steam drum to remove air from boiler A. During high pressure condition B. During initial up and startup C. During load change D. During high furnace pressur...

Question 1. ………… is a energy saving method of any boiler. A. Damper control of fans B. Duct by pass C. Speed control of fans D. None of the above Ans. C Question 2. Excessive blow down ………… A. Reduces Efficiency B. Increase Chemical Consumption C. Increase make up water D. All the above Ans. D Question 3. Oxygen in flue gas is measured by …………… A. Orsat Apparatus B. Zirconia Sensor C. Bomb Calorimeter D. Opacity Meter Ans. B Question 4. Efficiency of a thermal power plant is roughly ………. A. 80% B. 70% C. 35% D. Above 80% Ans. C Question 5. 456 Kcal is equal to ………….. kJ. A. 250 B. 1908 C. 3027 D. Cannot be changed Ans. B Question 6. Deaerator is placed at higher elevation A. For good house keeping B. To keep the building cool C. To increase NPSH A and avoid Cavitation in Boiler feed pump D. To vent steam easily Ans. C Question 7. Stoichiometric combustible mixture speaks about A. Fuel calorific value B. Temperature of air and fuel C. Unburnt carbon in flue gas D. Theoretical air Ans. D...

Question 1.The capacity of induced draft fan compared to forced draft fan in a boiler is ………. A. Same B. More C. Less D. Depending upon size of boiler Ans. B Question 2.O2 content in atmospheric air on volume basis is ………… A. 21% B. 23% C. 30% D. 78% Ans. A Question 3.Scale is formed on heat transfer surface when……………….. A. Water is acidic B. Water is alkaline C. Water contains dissolved gases D. Water contains dissolved calcium and magnesium salts. Ans. D Question 4.Which one of the following fuel has the highest hydrogen content and lowest sulphur content …………… A. Coal B. Furnace oil C. Natural gas D. LSHS Ans. C Question 5.For boiler water treatment chemical dosing with small discharge at high pressure, pump preferred is ………… A. Centrifugal B. Axil flow C. Propeller D. Reciprocating Ans. D Question 6.High % of carbon monoxide presence in the flue gas of boiler is an indicator of …………… A. Complete combustion B. Good control of pollutants C. Low excess air D. High excess air Ans. C Qu...

Question 1. The height of chimney in a power plant is governed by A. The draft to be created norms B. Sulphur in fuel C. Control of pollution & government D. None  Ans. B Question 2. Cavitation occurs in Pump A. Suction pipe B. Discharge pipe C. NRV’s D. None of above Ans. D Question 3. Proximate analysis of coal gives the following result A. Carbon, hydrogen, nitrogen, sulphur B Fixed carbon, Ash , volatiles , moisture C. Lower Calorific Value D Higher Calorific Value Ans. B Question 4. A steam pipe is to be insulted by two insulting materials put over each other. For better result A. Both may be put in any order B. Better insulator of the two should be put first then cover by less insulating C. Lower insulator material should be first put and covered with higher insulating material D. Depends on the steam temperature and conductivity of pipe Ans. B Question 5. The use of primary air in a PF boiler is for A. Carrying pulverised coal to the burners B. Cooling the boiler walls C...

Question 1. In a typical 200MW boiler, Emergency blow down tapping is taken from A. Drum B. Down comers/ring header C. De-aerator D. Can be any of the above Ans. A Question 2. which of the following is softer coal for grinding? A. Coal with HGI of 55 B. Coal with HGI of 45 C. Coal with HGI of 68 D. Any of the above Ans. C Question 3.typical combustion efficiency of a CFBC boiler is A. 40-60% B. 77-88% C. 88-96% D. 97-98% Ans. C Question 4.Drum material in typical 200MW boiler is A. Alloy steel B. Carbon steel C. Stainless steel D. All of the above Ans. B Question 5.Chromatographic analyser is used to measure the A. Oxygen in flue gas B. Carbon dioxide in flue gas C. Amount of individual gases in flue gas D. Sulphur dioxide in flue gas Ans. C Question 6.Spectrophotometer is used to A. Measure surface characteristics B. Measure chemical composition of alloy C. Gas composition D. Analyze colour spectrum Ans. B Question 7.The Orsat apparatus is used for measuring A. Chemical analysis of fl...

Question 1. Name the fan more suitable for high pressure application A. Propeller type fan B. Tube axial fan C. Backward curved centrifugal fan D. None of the above Ans. C Question 2. ESP works on the principle of A. Corona effect B. Induction effect C. Skin effect D. None of the above Ans. A Question 3. A solution having 4 pH is more acidic than a solution of 7 pH A. 03 times B. 30 times C. 100 times D. 1000 times Ans. D Question 4. Demineralisation of water is the process to remove A Dissolved oxygen B. Dissolved salts C. Carbon dioxide D. Chlorine Ans. B Question 5. Which of the following parameter remains constant during ideal throttling process A. Pressure B. Entropy C. Enthalpy D. Temperature Ans. C Question 6. Which of the following substance will have same percentage in ultimate and proximate a A. Hydrogen B. Moisture C. Ash D. Volatile matter Ans. C Question 7.Atomising of LDO in burners is carried out through A. Steam B. Compressed air C. Self pressure D. All of the above Ans...